type - Writing shell scripts

I've started skimming through the lovely Writing shell scripts tutorial and even though I'm just in the beginning of it I've already learnt one very useful thing: the type program. With it you can find out "what type of command it is". This is useful because sometimes you want to know where some command is coming from. I'll let this example explain its usage:

peterbe@trillian:~ $ type jed
jed is /usr/bin/jed
peterbe@trillian:~ $ type cvs_commit 
cvs_commit is /home/peterbe/bin/cvs_commit
peterbe@trillian:~ $ type alias
alias is a shell builtin
peterbe@trillian:~ $ type sjed
sjed is aliased to `sudo jed'

I'll read more of this after the weekend.

Comments

Related posts

Previous:

Helpdeskshow - a quick review 26 April 2006

Next:

Private functions in Javascript? 29 April 2006

Related:

And bash basics 16 October 2015

Some tips on learning React 04 August 2015

set -ex - The most useful bash trick of the year 31 August 2014

How I do deployments 16 December 2013

Bash tip of the day: ff 25 March 2011

To code or to pdb in Python 20 December 2010

pwdf - a mix of ls and pwd 07 April 2008

File check before delete 07 March 2008

Catching a carriage return in bash 23 October 2006

Geeking with Eterm and Tkinter 09 February 2006