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列操作
$ last | grep 'neo' | cut -d ' ' -f1
$ cat /etc/passwd | cut -d ':' -f1 root daemon bin sys sync games man lp mail news uucp proxy $ cat /etc/passwd | cut -d ':' -f1,3,4 # cat /etc/passwd | cut -d ':' -f1,6 root:/root bin:/bin daemon:/sbin adm:/var/adm lp:/var/spool/lpd sync:/sbin shutdown:/sbin halt:/sbin mail:/var/spool/mail uucp:/var/spool/uucp operator:/root games:/usr/games gopher:/var/gopher ftp:/var/ftp nobody:/ vcsa:/dev saslauth:/var/empty/saslauth postfix:/var/spool/postfix sshd:/var/empty/sshd rpc:/var/cache/rpcbind rpcuser:/var/lib/nfs nfsnobody:/var/lib/nfs ntp:/etc/ntp nagios:/var/log/nagios
行操作
$ cat /etc/passwd | cut -c 1-4 root daem bin: sys: sync game man: $ echo "No such file or directory"| cut -c4-7 such $ echo "No such file or directory"| cut -c -8 No such $ echo "No such file or directory"| cut -c-8 No such