grep指令-標示查詢的字串為紅色

1。一般的查詢，grep root /etc/passwd

root:x:0:0:root:/root:/bin/bash
operator:x:11:0:operator:/root:/sbin/nologin

2。加個顏色吧，grep –color=auto root /etc/passwd 或 grep –color=always root /etc/passwd
         root:x:0:0:root:/root:/bin/bash
operator:x:11:0:operator:/root:/sbin/nologin

3。你也可以把它放在 ~/.bashrc

alias grep=’grep –colour=always’

之後這麼查 grep root /etc/passwd 就可以了