Comments on: Bash history substitution http://www.spugbrap.com/blog/2006/07/bash-history-substitution/ This is a repository for my favorite scripts, regexes, commandlines, utilities, code snippets, tips, and other geeky things that might be useful to someone googling for an obscure solution some day. It's also a place to share my thoughts about companies I've dealt with, my favorite lifehacks, observations of interesting human behavior, clever and/or evil marketing schemes I've run across, and anything else I feel compelled to write about. Tue, 06 Jan 2009 09:31:22 +0000 http://wordpress.org/?v=2.2.3 By: spugbrap http://www.spugbrap.com/blog/2006/07/bash-history-substitution/#comment-80 spugbrap Wed, 19 Jul 2006 14:26:41 +0000 http://www.spugbrap.com/blog/2006/07/bash-history-substitution/#comment-80 I often do the type of previous command editing that you described, clint.. but in this particular case, there are actually about 10 date-based filenames on the commandline, and changing them all manually got tedious.<br/><br/>The 's' is for substitution. :)<br/>"s/old/new/<br/> Substitute new for the first occurrence of old in the event line. [...]" (from the <a HREF="http://web.mit.edu/gnu/doc/html/features_6.html" REL="nofollow">bash reference page</a> mentioned at the bottom of the <a HREF="http://spugbrap.blogspot.com/2006/07/bash-history-substitution.html" REL="nofollow">original post</a>).<br/><br/>But yeah, the 'g' was crucial for doing what I needed to do.. otherwise, the method I already knew about (^old^new^) would have sufficed. I often do the type of previous command editing that you described, clint.. but in this particular case, there are actually about 10 date-based filenames on the commandline, and changing them all manually got tedious.

The ’s’ is for substitution. :)
“s/old/new/
Substitute new for the first occurrence of old in the event line. […]” (from the bash reference page mentioned at the bottom of the original post).

But yeah, the ‘g’ was crucial for doing what I needed to do.. otherwise, the method I already knew about (^old^new^) would have sufficed.

]]> By: ClintJCL http://www.spugbrap.com/blog/2006/07/bash-history-substitution/#comment-79 ClintJCL Wed, 19 Jul 2006 14:20:16 +0000 http://www.spugbrap.com/blog/2006/07/bash-history-substitution/#comment-79 gah!<br/><br/>I'm happy with up-arrow,enter.<br/><br/>It seems that the thought required to do those is almost more work. I would just do "cat[uparrow][ctrl-left a cpl times][changes 4 to 5]"... <br/><br/>That's a neat trick though.<br/><br/>g for global change (like perl), but what is the s for? gah!

I’m happy with up-arrow,enter.

It seems that the thought required to do those is almost more work. I would just do “cat[uparrow][ctrl-left a cpl times][changes 4 to 5]”…

That’s a neat trick though.

g for global change (like perl), but what is the s for?

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