(轉貼)How do I tell what type my shell is

How do I tell what type my shell is

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How can I tell what type my shell is? ie, whether it's traditional sh, bash, ksh, csh, zsh etc. Note that checking $SHELL or $0 won't work because $SHELL isn't set by all shells, so if you start in one shell and then start a different one you may still have the old $SHELL. $0 only tells you where the shell binary is, but doesn't tell you whether /bin/sh is a real Bourne shell or bash. I presume that the answer will be "try some features and see what breaks", so if anyone can point me at a script that does that, that'd be great. 3down vote Try to locate the shell path using the current shell PID: ps -p $$ It should work at least with sh, bash and ksh. share|improve this answer answered Mar 2 '11 at 11:20 ziu 1,271726