Bash - Revision history

161.253.47.104: /* Programming */

2005-11-22T18:13:30Z

Programming

161.253.47.104: /* For */

2005-11-22T18:10:43Z

For

129.6.61.113: /* Programming */

2005-08-04T20:56:18Z

Programming

129.6.61.113: /* Startup files */

2005-06-03T19:49:11Z

Startup files

64.134.50.170 at 00:05, 3 June 2005

2005-06-03T00:05:01Z

129.6.61.113 at 19:47, 2 June 2005

2005-06-02T19:47:41Z

New page

=Attention Feminazis=

If you are an overzealous feminist and seek documentation for the Bourne Again Shell, type

man bash

at the prompt. (rimshot)

=Startup files=

You generally have a choice between .bashrc (see also [[rc file]]), .bash_profile, .profile, /etc/profile, ''et cetera''. Here's the gist of what the man basher has to say:

==As a login shell==

Running as a login shell, bash will always source /etc/profile (if it exists). Then, it selects the first readable file in this order and sources it:

* ~/.bash_profile
* ~/.bash_login
* ~/.profile

Starting login bash with <code>--noprofile</code> makes it skip both /etc/profile and the local profiles.

Incidentally, bash will source ~/.bash_logout upon your logout if it exists.

==As a non-login shell==

Running as a non-login shell, bash will run ~/.bashrc if it exists. <code>--norc</code> will make it skip the rc file altogether; <code>--rcfile ''filename''</code> will make it source another file instead of ~/.bashrc.

@@ Line 19: / Line 19: @@
   done
-That's how to run a command for every (normal) file in the directory.  If you want to make an array yourself, instead of using the lines of a program, that's
+That's how to run a command for every (normal) file in the directory.  (Note that <tt>for i in $( ls * )</tt> doesn't work the same way, since the list would be the words in the output instead of the lines.)  If you want to make an array yourself, instead of using the words output a program, that's
   for i in {alpha,beta,gamma}; do
     echo item: $i
   done
 =Startup files=

@@ Line 15: / Line 15: @@
 Bash for loops are a little tricky.  The general form is
-  for i in $( ls ); do
+  for i in *; do
     echo item: $i
   done
@@ Line 24: / Line 24: @@
     echo item: $i
   done
 =Startup files=

@@ Line 24: / Line 24: @@
     echo item: $i
   done
 =Startup files=

← Older revision		Revision as of 19:49, 3 June 2005
Line 26:		Line 26:

	=Startup files=		=Startup files=
		+
		+	See [[shell startup scripts]] for what to put in these files.

	You generally have a choice between .bashrc (see also [[rc file]]), .bash_profile, .profile, /etc/profile, ''et cetera''. Here's the gist of what the man basher has to say:		You generally have a choice between .bashrc (see also [[rc file]]), .bash_profile, .profile, /etc/profile, ''et cetera''. Here's the gist of what the man basher has to say:

← Older revision		Revision as of 00:05, 3 June 2005
Line 6:		Line 6:

	at the prompt. (rimshot)		at the prompt. (rimshot)
		+
		+	=Programming=
		+
		+	See also [http://www.tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html the BASH Programming - Introduction HOWTO].
		+
		+	==For==
		+
		+	Bash for loops are a little tricky. The general form is
		+
		+	for i in $( ls ); do
		+	echo item: $i
		+	done
		+
		+	That's how to run a command for every (normal) file in the directory. If you want to make an array yourself, instead of using the lines of a program, that's
		+
		+	for i in {alpha,beta,gamma}; do
		+	echo item: $i
		+	done

	=Startup files=		=Startup files=