linux 系统命令

1 cat   2 chgrp  3 chmod 4 chown 5 cp 6 diff 7 file 8 locate 9 10 mv 11 rm 12 tr 13 wc 14 grep 15 adduser 16 date 17 exit 18 w  19 free 20 groupdel  21 groupmod 22 halt 23 id 24 kill 25 last 26 lastb 27 logname 28 ps 29 init0  30 init6 31 su 32 uname 33 alias 34 chkconfig 35 clear 36 clock crontab 37 dmesg 38 export 39 hwclock 40 lsmd 41 ntsysv 42 passwd 43 timeconfig 44 ifconfig 45 netstat 46 ping 47 cd 48 df 49 du 50 ll 51 mkdir 52 pwd 53 rmdir 54 dd 55 fdisk 56 sync 57 tar