Linux人生 -- Lives For Linux -- http://yangwen.cublog.cn/ dd if=/dev/hda of=mbr.backup bs=512 count=1 -- dd of=/dev/hda if=mbr.backup bs=512 count=1 -- 446 boot.code find . -type d -exec chmod 755 {} \\; -- mail other@host.com -s \'subject\' < \'filename\' -R YourEmail@host.com man -t ls | ps2pdf - ls.pdf for file in `ls *.wav` ; do lame -V2 $file ${file/\".wav\"/\".mp3\"}; done |