Answer / dipayan

echo $SHELL

will show that

Answer / abdullah

Hi folks,

The best answer is echo $0

# echo $SHELL
/bin/bash
#csh
# echo $SHELL
/bin/bash


But, when using echo $0:
[root@abdullah /]# echo $0
-bash
# csh
# echo $0
csh

Answer / satya

echo $SHELL---It will shows which shell u r currently
running.

Answer / abhilash s thachil

ps is not the correct answer. ps just lists out the running processes.
echo $SHELL will just print the value in environment variable SHELL which is your default shell.

Correct answer is echo $0

This will print current shell even after you change your shell from a running shell.

- Abhilash S Thachil

Answer / rajhshekhar aletty

ps This command displays your current SHELL and your default
SHELL also.

Answer / unix admin

'Rajhsekhar', 'Swapna' and 'Abdullah' these 3 users
answers also right 100% look at the following example:
using "ps"

/usr/users/operator=>ps
PID TTY S TIME CMD
1683270 pts/0 S 0:00.24 -ksh (ksh)
[operator] AT:/usr/users/operator=>sh
[operator] AT:${PWD}=>ps
PID TTY S TIME CMD
1683270 pts/0 S 0:00.24 -ksh (ksh)
1715181 pts/0 S + 0:00.01 sh
[operator] AT:${PWD}=>


using "echo $0"

/usr/users/operator=>echo $0
-ksh
/usr/users/operator=>sh
[operator] AT:${PWD}=>echo $0
sh
[operator] AT:${PWD}=>

Answer / harish

ps lists all the processes running not the shell type.
echo $shell can be used to find out the shell running.

Answer / subbareddy kake

All answers correct, except 'Swapna' and 'Rajhsekhar'
answers.By using ps cammand we can see what are the process
are running.So may be few process are running in b shell
remaining process are are running on C shell.So we can't
say.

Best answer is

echo $SHELL

Answer / padma narravula

ps | grep "$$"

Answer / asit pal

[Admin@RSPC985 Asit]$ which $SHELL
/bin/bash

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