Create a shell script to run in bash in OSX

Question

WARNING! Getting pretty basic here guys...

I have a rather elaborate shell script that I wish to create, but am haveing difficulty with the most basic of commands so am struggling to get going.

I want to create a .sh file that I can simply run using BASH - If I place just CD in the file and run in BASH nothing happens, whereas running CD from the terminal obv. gets me home.

Could someone shed some light on this please... I am running OSX

thanks

possible duplicate of How to run 'cd' in shell script and stay there after script finishes? — Mat
– Mat, Commented Feb 23, 2015 at 15:32
What do you mean 'nothing happens'? When you run the script, a sub-process is forked, the file is parsed, the subshell cd's and exits, returning a value to the calling shell. That's quite a bit of activity, and I left out many details! — William Pursell
– William Pursell, Commented Feb 23, 2015 at 15:35
Thanks, that link was the answer - and WIlliam Pursell... Like your answer :) — Pete Norris
– Pete Norris, Commented Feb 23, 2015 at 15:41
Will be far better 1.) describe the problem what you want achieve 2.) what tried, 3.) input data and the wanted output (if acceptable) 4.) without the "excuse-me" sentences(!)... ;) :) — clt60
– clt60, Commented Feb 23, 2015 at 15:42

Paul Evans · Accepted Answer · 2015-02-23 15:37:02Z

2

When you run a script you spawn a new sub-shell, your cd works in that and then you exit back to your orginal shell and your old present work directory - just as thought the cd never happened. If you want to short cut cds use a alias or a function. Something like:

go_dev() {
    cd /my/long/path/to/dev/env/
}

or

alias go_dev='cd /my/long/path/to/dev/env/'

answered Feb 23, 2015 at 15:37

Paul Evans

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