简单命令行处理问题，大家帮忙瞅瞅，多谢

jils2013

回复 8# unbutun

; 是一次传一个结果给 命令，效果类似grep keyword a;grep keyword b;grep keyword c;...
+ 就是一次传多个，效果类似 grep keyword a b c ...


   

tianrenly

用grep

例如
grep eth1 -r /etc/*

unbutun

哦，了解了，同学，能否告知这个+的做法从哪里学来的？

多谢

回复 11# jils2013


   

jils2013

man 我记得好像是

mingming_song

  Repetition
       A regular expression may be followed by one of several repetition operators:
       ?      The preceding item is optional and matched at most once.
       *      The preceding item will be matched zero or more times.
       +      The preceding item will be matched one or more times.
       {n}    The preceding item is matched exactly n times.
       {n,}   The preceding item is matched n or more times.
       {,m}   The preceding item is matched at most m times.
       {n,m}  The preceding item is matched at least n times, but not more than m times.
回复 13# unbutun