How to view the current shell in linux

This article mainly introduces how to view the current shell in linux. For more information, see

1. view the shell types used in the current process in real time: recommended

Copy codeThe code is as follows:
Ps | grep $ | awk '{print $4 }'

(Note: $ indicates the shell process number)

2. the most common command for viewing shell, but it cannot reflect the current shell in real time

Copy codeThe code is as follows:
$ Echo $ SHELL

3. more concise, but not all shells support

Copy codeThe code is as follows:
$ Echo $0

4. search for shell matching in environment variables

Copy codeThe code is as follows:
Env | grep SHELL

5. search for shell matching in the password file

Copy codeThe code is as follows:
Cat/etc/passwd | grep muye

6. when using ps-ef

Copy codeThe code is as follows:
$ Ps-ef | grep $ | grep-v grep | grep-v ps

Note: grep-v indicates inverse, as shown below:

Copy codeThe code is as follows:
Muye @ bupt :~ $ Ps-ef | grep $
Muye 4750 4745 0 00:00:00 pts/1 bash
Muye 5331 4750 0 00:00:00 pts/1 ps-ef
Muye 5332 4750 0 00:00:00 pts/1 grep -- color = auto 4750

Remove the last two