使用ps | egrep时过滤排除掉egrep自身

博文背景

[email protected]:/usr/local/redis-7.0.3# ps -ef | egrep redis
root     1815199       1  0 00:00 ?        00:01:28 ./src/redis-server 127.0.0.1:6379
root     1997222 1996120  0 19:23 pts/2    00:00:00 grep -E --color=auto redis

这个很丑陋，看着不习惯

[email protected]:/usr/local/redis-7.0.3# ps -ef | egrep redis | egrep -v grep
root     1815199       1  0 00:00 ?        00:01:28 ./src/redis-server 127.0.0.1:6379

这个很麻烦，看着不习惯

解决办法

% ps -ef | egrep "[r]edis"

[email protected]:/usr/local/redis-7.0.3# ps -ef | egrep "[r]edis"
root     1815199       1  0 00:00 ?        00:01:28 ./src/redis-server 127.0.0.1:6379

原理自己领悟，想想就很容易懂了。

参考链接：https://www.baeldung.com/linux/grep-exclude-ps-results#2-make-a-grep-expression-that-excludes-grep-itself