这个为什么不行？

airzhu

a='ORA_FASDAF'


if grep 'ORA' $a
  then
  echo 'a'
fi



感觉在这个里面的A变量只能是一个文件名而不能是一个字符串

sunbw001

if grep 'ORA' <<<$a

kwokcn

NAME
       grep, egrep, fgrep - print lines matching a pattern

SYNOPSIS
       grep [options] PATTERN [FILE...]
       grep [options] [-e PATTERN | -f FILE] [FILE...]

DESCRIPTION
       Grep  searches  the  named  input  FILEs (or standard input if no files are named, or the file name - is given) for
       lines containing a match to the given PATTERN.  By default, grep prints the matching lines.

       In addition, two variant programs egrep and fgrep are available.  Egrep is the same as grep -E.  Fgrep is the  same
       as grep -F.