Filter out egrep itself when using ps | egrep

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

This is ugly, I'm not used to it

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

This is very troublesome, I'm not used to it

Solution

% 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

The principle is understood by oneself, and it is easy to understand when you think about it.

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