sort

[root@localhost ~]# sort -t ':' -k 3 -n /etc/passwd

[root@localhost /]# du -sh * | sort -n

[root@localhost /]# du -sh * | sort -nr

sort -M 以月份排序Jan、Feb、Mar、Apr、May、Jun、Jul、Aug、Sep、Oct、Nov、Dec

[root@localhost /]# netstat -lnut

[root@localhost /]# lsof -i:111

[root@localhost /]# lsof -i:111

[root@localhost /]# mount -av

[root@localhost ~]# sleep 300&

[1] 4535

[1]+  运行中               sleep 300 &

[root@localhost ~]# jobs -l

[1]+  4535 运行中               sleep 300 &

[root@localhost ~]# ps --forest

   PID TTY          TIME CMD

  4304 pts/1    00:00:00 bash

  4535 pts/1    00:00:00  \_ sleep

  4708 pts/1    00:00:00  \_ ps

[root@localhost ~]# ps -ef | grep 4535 | grep -v grep

root       4535   4304  0 00:51 pts/1    00:00:00 sleep 300

[root@localhost ~]# which ps

/usr/bin/ps

[root@localhost ~]# type -a ps

ps 是 /usr/bin/ps

[root@localhost ~]# !232 

[root@localhost ~]# alias -p    查看当前用的别名

[root@localhost ~]# echo `date +%Y-%m-%d--%H:%M:%S`.log

[root@localhost ~]# rpm -qa | sort | less