linux删除文件中含有某字符的行

sed -i -e '/string/d' file


脚本，从键盘输入删除含某字符行

#!/bin/shFILENAME=file.txt   # 可换为$1if [ ! -f file.txt ];then        echo "$FILENAME no found"        exit 1fiecho -n "INPUT SOME THING: "readif [ ! -z "$REPLY" ];then     INFO=$(grep $REPLY FILENAME)     if [ ! -z "$INFO" ] ; then          sed -i -e '/$REPLY/d' FILENAME   #删除只用这行就可以了     else          echo "没有指定内容的信息"          exit 1     fielse      echo "input some thing"     exit 1fiexit $?