root@localhost ~]# cat file.txt
hello world
a:b:c -h -n
a:b:c -h -n
sed根据条件删除相关的行:
[root@localhost ~]# sed -i '/a:b:c -h -n/d' file.txt
[root@localhost ~]# cat file.txt
hello world
sed根据条件进行相关内容的替换:
[root@localhost ~]# sed -i 's/hello/baidu/' file.sh
[root@localhost ~]# cat file.sh
baidu world