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1 #!/bin/sh
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2 # Tazusb - SliTaz LiveUSB
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3 #
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4 # Tazusb is an utility to generate, configure and manipulate SliTaz LiveUSB
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5 # bootable media and/or USB /home partition, such as flash keys, SD card or
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6 # USB harddisk.
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7 #
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8 # Authors : Christophe Lincoln (Pankso) <pankso@slitaz.org>
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9 # Andrew Miller (Spode) <spode@spodesabode.com>
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10 #
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11 VERSION=20080304
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12
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13 COMMAND=$1
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14 TARGET_ROOT=/media/flash
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15 DRIVE_NAME=`cat /proc/sys/dev/cdrom/info | grep "drive name" | cut -f 3`
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16 CDROM=/dev/$DRIVE_NAME
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17
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18 #
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19 # Tazusb functions
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20 #
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21
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22 # Print the usage.
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23 usage ()
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24 {
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25 echo -e "\nSliTaz Live USB - Version: $VERSION\n
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26 \033[1mUsage: \033[0m `basename $0` [command] [compression|device]
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27 \033[1mCommands: \033[0m\n
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28 usage Print this short usage.
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29 writefs Write the current filesystem to rootfs.gz.
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30 tazSupported compression: lzma. gzip, none.
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31 format Format and label device with ext3 filesystem (for LiveUSB or /home).
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32 gen-liveusb Generate a bootable LiveUSB using files from the LiveCD.\n"
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33 }
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34
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35 # Status function.
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36 status()
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37 {
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38 local CHECK=$?
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39 echo -en "\\033[70G[ "
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40 if [ $CHECK = 0 ]; then
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41 echo -en "\\033[1;33mOK"
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42 else
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43 echo -en "\\033[1;31mFailed"
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44 fi
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45 echo -e "\\033[0;39m ]"
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46 }
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47
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48 # Exit if user is not root.
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49 check_root()
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50 {
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51 if test $(id -u) != 0 ; then
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52 echo -e "\nThis program requires being run as root.\n"
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53 exit 0
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54 fi
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55 }
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56
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57 # Verify a device exists before format or install
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58 check_for_device()
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59 {
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60 DEVID=`fdisk -l | grep -w $DEVICE | cut -d: -f1 | cut -d/ -f3`
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61 if [ -z "$DEVID" ]; then
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62 echo -e "\nUnable to find device: $DEVICE\n"
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63 exit 0
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64 fi
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65
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66 PARTID=/dev/"$DEVID"1
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67 }
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68
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69 #gets the UUID and filesystem type
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70 get_part_info()
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71 {
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72 UUID=`blkid -s UUID -o value $PARTID`
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73 FSTYPE=`blkid -s TYPE -o value $PARTID`
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74 }
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75
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76 # Format target device and label partition.
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77 mkfs_ext3()
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78 {
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79 echo -n "Please specify a label for the partition (TazUSB): "
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80 read label
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81
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82 if [ -z $label ]; then
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83 label=TazUSB
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84 fi
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85
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86 echo "Label : $label"
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87 echo "Mkfs : mkfs.ext3 -L \"$label\" $PARTID"
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88 echo "" && sleep 2
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89 mkfs.ext3 -L "$label" $PARTID
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90
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91 }
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92
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93 # Mount an existing USB device.
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94 unmount_target_usb()
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95 {
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96 # If mount point is in use, unmount
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97 if mount | grep $TARGET_ROOT; then
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98 umount $TARGET_ROOT
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99 fi
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100
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101 # Device could be mounted elsewhere, so unmount
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102 if mount | grep $PARTID; then
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103 echo "Unmounting USB target device..."
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104 umount $PARTID
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105 fi
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106 }
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107
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108 # Mount an existing USB device.
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109 mount_target_usb()
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110 {
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111 # If mount point is in use, unmount
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112 if mount | grep $TARGET_ROOT; then
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113 umount $TARGET_ROOT
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114 fi
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115
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116 # Device could be mounted elsewhere, so unmount
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117 if mount | grep $PARTID; then
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118 umount $PARTID
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119 fi
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120
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121 echo "Mounting USB target device..."
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122 mkdir -p $TARGET_ROOT
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123 mount $PARTID $TARGET_ROOT 2>/dev/null
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124 }
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125
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126 # Mount SliTaz LiveCD to get needed files.
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127 mount_cdrom()
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128 {
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129 echo "Mounting cdrom device..."
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130
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131 if mount | grep /media/cdrom; then
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132 umount /media/cdrom
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133 fi
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134
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135 mkdir -p /media/cdrom
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136 mount -t iso9660 $CDROM /media/cdrom
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137
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138 if [ ! -f /media/cdrom/boot/rootfs.gz ]; then
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139 echo -e "\nUnable to find a filesystem on the cdrom (rootfs.gz).\n"
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140 exit 0
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141 fi
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142 }
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143
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144 # All needed files are in the boot direcory of the cdrom.
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145 copy_cdrom_files()
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146 {
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147 echo -n "Copying needed files from cdrom..."
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148 mkdir -p $TARGET_ROOT/boot
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149 cp /media/cdrom/boot/bzImage $TARGET_ROOT/boot
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150 cp /media/cdrom/boot/rootfs.gz $TARGET_ROOT/boot
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151 status
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152 }
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153
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154 install_mbr()
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155 {
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156 # MBR
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157 if [ -f /usr/share/syslinux/mbr.bin ]; then
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158 echo -n "Installing a new MBR to: $DEVICE"
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159 cat /usr/share/syslinux/mbr.bin > $DEVICE
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160 status
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161 else
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162 # Skip MBR install (tazpkg get-install syslinux-extra ? and then cat)
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163 echo "No new MBR installed to: $DEVICE"
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164 fi
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165 }
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166
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167 # ext/syslinux install
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168 install_boot()
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169 {
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170 #decide if we're installing syslinux or extlinux
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171 if [ "$FSTYPE" = "vfat" ]; then
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172 ST=syslinux
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173 STC="syslinux -d /boot/syslinux/ $PARTID"
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174 STE=cfg
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175 else
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176 ST=extlinux
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177 STC="extlinux --install $TARGET_ROOT/boot/$ST"
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178 STE=conf
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179 fi
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180
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181 echo "Installing bootloader: $ST"
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182 mkdir -p $TARGET_ROOT/boot/$ST
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183 $STC
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184
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185 # extlinux.conf / syslinux.cfg
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186 cat > $TARGET_ROOT/boot/$ST/$ST.$STE << _EOT_
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187 display display.txt
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188 default slitaz
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189 label slitaz
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190 kernel /boot/bzImage
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191 append initrd=/boot/rootfs.gz rw root=/dev/null home=$UUID
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192
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193 label previous
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194 kernel /boot/bzImage
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195 append initrd=/boot/previous.gz rw root=/dev/null home=$UUID
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196
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197 _EOT_
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198
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199 # display.txt
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200 cat > $TARGET_ROOT/boot/$ST/display.txt << "EOT"
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201 _______. __ __ .___________. ___ ________
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202 / || | | | | | / \ | /
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203 | (----`| | | | `---| |---` / ^ \ `---/ /
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204 \ \ | | | | | | / /_\ \ / /
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205 .----) | | `----.| | | | / _____ \ / /----.
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206 |_______/ |_______||__| |__| /__/ \__\ /________|
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207
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208
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209 SliTaz GNU/Linux LiveUSB
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210 Simple Light Incredible Temporary Autonomus Zone
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211
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212
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213 EOT
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214 status
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215 }
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216
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217 # Let user exit or reboot.
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218 exit_or_reboot()
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219 {
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220 echo ""
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221 echo -n "Do you want to exit Tazusb or reboot system (Exit/reboot) ? "
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222 read anser
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223 if [ "$anser" == "reboot" ]; then
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224 umount $TARGET_ROOT
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225 umount /media/cdrom
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226 reboot || reboot -f
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227 else
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228 umount /media/cdrom
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229 echo "==============================================================================="
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230 echo ""
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231 exit 0
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232 fi
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233 }
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234
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235 set_bootable()
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236 {
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237 # As the boot flag is toggable, need to check it before hand
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238 ISSET=`fdisk -l $DEVICE | grep $DEVICE | grep "*"`
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239
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240 # If not set, set bootable
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241 if [ -z "$ISSET" ]; then
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242 umount $DEVICE
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243 echo "Setting $PARTID as bootable..."
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244 fdisk $DEVICE >/dev/null << EOF
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245 a
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246 1
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247 w
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248 EOF
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249 status
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250 fi
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251 }
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252
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253 #
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254 # Tazusb sequence
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255 #
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256
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257 case $COMMAND in
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258 writefs)
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259 #writefs to rootfs.gz
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260 check_root
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261 if [ -z $2 ]; then
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262 COMPRESSION=none
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263 else
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264 COMPRESSION=$2
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265 fi
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spode@0
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266 #start info
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267 echo ""
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268 echo -e "\033[1mWrite filesystem\033[0m
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269 ===============================================================================
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270 The command writefs will write all the current filesystem into a suitable cpio
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271 archive (rootfs.gz) usable on a bootable LiveUSB media.
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272
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273 Archive compression: $COMPRESSION"
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274 echo ""
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275
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276 #clear out tazpkg cache
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277 rm /var/cache/tazpkg/* -r -f
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278
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279 #optionally remove sound card selection
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280 echo -n "Do you wish to remove the sound card selection (Yes/no/exit) ? "
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281 read answer
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282 answer=`echo "$answer:0:1}" | tr A-Z a-z`
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283
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284 if [ "$answer" = "e"]; then
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285 exit 0
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286 fi
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287
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288 if [ "$answer" = "y" ]; then
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289 echo -n "Removing current sound card selection..."
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290 rm -f /var/lib/sound-card-driver
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291 rm -f /etc/asound.state
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292 else
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293 echo -n "Keeping current sound card selection..."
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294 fi
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295 status
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296
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297 #create list of files
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298 find /bin /etc /init /sbin /var /dev /lib /mnt /root /usr >/tmp/list
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299
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300 for dir in /home /proc /sys /tmp /media /media/cdrom /media/flash /media/usbdisk
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301 do
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302 echo $dir >>/tmp/list
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303 done
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304
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305 #gen initramfs with specified compression
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306 if [ "$COMPRESSION" = "lzma" ]; then
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307 echo -n "Creating rootfs.gz with lzma compression... "
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308 cat /tmp/list | cpio -o -H newc | lzma e -si -so > /rootfs.gz
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309
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310 elif [ "$COMPRESSION" = "gzip" ]; then
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311 echo -n "Creating rootfs.gz with gzip compression... "
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312 cat /tmp/list | cpio -o -H newc | gzip -9 > /rootfs.gz
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313
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314 else
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315 echo -n "Creating rootfs.gz without compression... "
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316 cat /tmp/list | cpio -o -H newc > /rootfs.gz
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317 fi
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318
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319 #get initramfs size
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320 size=`du -sh /rootfs.gz | cut -f 1`
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321
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322 #if the bootable medium is where it should be, copy across
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323
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324 if (test -e /home/boot/bzImage); then
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325 echo "Moving rootfs.gz to media. Remember to unmount for delayed writes!"
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326
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327 #move the old filesystem with the unix timestamp for reference
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328 if (test -e /home/boot/previous.gz); then
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329 mv /home/boot/previous.gz /home/boot/rootfs.gz.$(date +%s)
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330 fi
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331
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332 mv /home/boot/rootfs.gz /home/boot/previous.gz
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333 mv /rootfs.gz /home/boot/.
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334 else
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335 echo "rootfs.gz is located in /"
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336 fi
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337
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338 echo "==============================================================================="
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339 echo "Root filesystem size: $size"
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340 echo ""
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341 ;;
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342 format)
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343 # Format a partitions in ext3.
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344 check_root
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345 echo ""
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346 echo -e "\033[1mFormat a device\033[0m"
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347 echo "==============================================================================="
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348 DEVICE=$2
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spode@0
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349 if [ -z $DEVICE ]; then
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350 echo -e "\nPlease specify a device to format: tazusb $COMMAND /dev/name\n"
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351 exit 0
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352 fi
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353 check_for_device
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354 echo "Device : $DEVICE"
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355 mkfs_ext3
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356 echo "==============================================================================="
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357 echo "Device $label ($PARTID) is ready to use as LiveUSB and/or /home partition."
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358 echo ""
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359 ;;
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360 gen-liveusb)
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361 # Generate a LiveUSB media using files from a LiveCD.
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362 check_root
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363 echo ""
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364 echo -e "\033[1mGen a LiveUSB media\033[0m"
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365 echo "==============================================================================="
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366 DEVICE=$2
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367 if [ -z $DEVICE ]; then
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368 echo -e "\No device specified. Usage: tazusb $CAMMAND /dev/name\n"
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369 exit 0
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370 fi
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371
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spode@0
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372 check_for_device
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spode@0
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373 get_part_info
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spode@0
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374 unmount_target_usb
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375 install_mbr
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376 set_bootable
|
spode@0
|
377 mount_target_usb
|
spode@0
|
378 mount_cdrom
|
spode@0
|
379 copy_cdrom_files
|
spode@0
|
380 install_boot
|
spode@0
|
381 exit_or_reboot
|
spode@0
|
382 ;;
|
spode@0
|
383 usage|*)
|
spode@0
|
384 # Display usage by default.
|
spode@0
|
385 usage
|
spode@0
|
386 ;;
|
spode@0
|
387 esac
|
spode@0
|
388
|
spode@0
|
389 exit 0
|