How to detect the command interpreter from within a shell script? [duplicate]

Question

Possible Duplicate:
How to test what shell I am using in a terminal?

I want to detect which interpreter a shell script is using. For example the following script:

#!/bin/bash

issue_interpreter_name()

Should reveal the interpreter:

bash

@jw013 more or less the same question but jippie's answer is better then the ones in the linked question :-) — Matteo, May 3 '12 at 18:52

Brian Meehan · Answer 1 · 2012-05-03 12:00:15Z

up vote -2 down vote

If it's a local user, the 7th field of /etc/passwd is their shell. Are you looking for the currently preferred shell?

answered May 3 '12 at 12:00

Brian Meehan
1

2

-1 The default login shell is not necessrily the one currently running. – rahmu May 3 '12 at 12:05

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jippie · Answer 2 · 2012-05-03 18:55:04Z

up vote 4 down vote

#!/bin/sh  
ps h -p $$ -o args='' | cut -f1 -d' '

answered May 3 '12 at 18:27

jippie
5,80051743

On Mac OX X I get an additional line with the header ARGS. With -o args='' you can remove the header – Matteo May 3 '12 at 18:50

1

Verified Matteo's comment on Linux (ubuntu 12.04) and works as designed. Updated my answer. – jippie May 3 '12 at 18:55

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marked as duplicate by sr_, Stéphane Gimenez, Kevin, Gilles, Mat May 4 '12 at 10:23