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How do I know my current shell

 
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# 1  
Old 07-02-2008
How do I know my current shell
when I get from my shell into other shell, what is the best way to identify the current new shell in a script ?

for example: logged on with bash, and typed csh.

I got out the following option:
Code:
ps -ef | awk -v PID=$$ '{ if ( $2 == PID ) { gsub ("-","")  ; print $NF}}'

any other idea ?
# 2  
Old 07-02-2008
Code:
echo $0

or

Code:
echo $SHELL

# 3  
Old 07-02-2008
'$0' will give you 'current' shell
'$SHELL' will give you your 'login' shell
# 4  
Old 07-02-2008
Power so simple ..
thanks
 
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