ouhi2008的博客

[root@fwang5stash ~]# ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) ...

1.查看crontab说明 [fwang5@szotautotest03 ~]$ more /etc/crontab SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root HOME=/ # For details see man 4 crontabs # Example of job definitio...

1.row/column value$0  whole row$1..$n  one columnawk '{print $1, $4}' netstat.txt awk '{printf "%-8s %-8s %-8s %-18s %-22s %-15s\n",$1,$2,$3,$4,$5,$6}' netstat.txt   2.filter,comparison operator: ...

1.s option $ cat pets.txt This is my cat my cat's name is betty This is my dog my dog's name is frank This is my fish my fish's name is george This is my goat my goat'...