#!/bin/ksh grep $NAME filename if [ $? -eq 0 ] echo "Name Found" else echo " Name not Found" fi
The $? holds the exit status of the previously executed command. Check the man page please.
来源：https://www.unix.com/shell-programming-and-scripting/30996-using-grep-if-statement.html
虽然上面是针对是ksh，但是bash同样适合：
for item in *.json; do # grep "perl" "$item" > /dev/null #为了不在屏幕上显示grep结果 # 或者: grep -q "perl" "$item" if [ $? -eq 0 ]; then #如果搜索到perl，则$?会是0，否则为1 echo $item #输出含有perl的文件，对应的文件名 fi done
Bash: 如何以grep的结果做为if condition
原文：https://www.cnblogs.com/profesor/p/15227375.html