学步园

已经测试过在Fedora10上运行顺利，需要root权限才可以执行

#! /bin/bash<br /> # written by cpuwolf@gmail.com 2010<br /> mountpt=/media/disk<br /> devicename=sdb<br /> sdcard=/dev/$devicename</p> <p>if test $# -le 0 ; then<br /> echo "Error: needs IROM image path"<br /> exit 1<br /> fi<br /> infile="$1"<br /> if [ -e $infile ] ; then<br /> echo "IROM image: $infile"<br /> else<br /> echo "IROM image: $infile does not existing"<br /> exit 1<br /> fi<br /> imagelen=`wc -c < $infile`<br /> echo "IROM image Size: $imagelen bytes"</p> <p>if [ -e /sys/block/$devicename/removable ] ; then<br /> removable=$(cat /sys/block/$devicename/removable)<br /> else<br /> echo "SD card: /dev/$devicename is not existing"<br /> exit 1;<br /> fi<br /> if [ ! $removable == "1" ]; then<br /> echo "/dev/$devicename is not removable"<br /> exit 1;<br /> fi<br /> if [ -e /sys/block/$devicename/queue/hw_sector_size ] ; then<br /> sectorsize=$(cat /sys/block/$devicename/queue/hw_sector_size)<br /> echo "SD card sector size: $sectorsize bytes"<br /> if ! test $sectorsize -eq 512 ; then<br /> echo "Warning: sector size is not 512"<br /> fi<br /> fi<br /> if [ -e /sys/block/$devicename/size ] ; then<br /> numsectors=$(cat /sys/block/$devicename/size)<br /> echo "SD card total size: $numsectors sectors"<br /> fi<br /> disksize=`expr $numsectors /* $sectorsize`<br /> echo "SD card total size: $disksize bytes"<br /> reservedsize=`expr $sectorsize /* 2`<br /> endsize=`expr $reservedsize + $imagelen`<br /> diskoffset=`expr $disksize - $endsize`<br /> echo "IROM image is writen to offset: $diskoffset (bytes)"<br /> diskoffsetsector=`expr $diskoffset / $sectorsize`<br /> echo "IROM image is writen to offset: $diskoffsetsector (sectors)"<br /> issectoralign=`expr $diskoffset % $sectorsize`<br /> if ! test $issectoralign -eq 0 ; then<br /> echo "Warning: IROM image size is not align on sectors"<br /> fi<br /> echo "start flushing IROM image..."<br /> dd if=$infile of=/dev/$devicename bs=$sectorsize seek=$diskoffsetsector > /dev/null 2>&1 && echo "flush successful" || echo "Error: flush"<br />