Comments on: Useful bash tricks: learning from history http://namakajiri.net/complog/useful-bash-tricks-learning-from-history/ experiences with computers. updated infrequently. Tue, 07 Jul 2009 13:29:09 +0000 http://wordpress.org/?v=2.9.1 hourly 1 By: Rajeev http://namakajiri.net/complog/useful-bash-tricks-learning-from-history/comment-page-1/#comment-104 Rajeev Tue, 06 May 2008 14:08:07 +0000 http://namakajiri.net/complog/useful-bash-variables-learning-from-the-history/#comment-104 <p>hi,</p> <p>i would like to have a way to execute last N commands from history. For example - cd dir1 rm file1 cd ../dir2 rm file 2 cd ..</p> <p>say above are the 5 commands. I would like to execute these 5 commands. How to do it ?</p> <p>I wrote this shell script - repeat.sh.</p> <p>!/bin/sh</p> <p>echo "start" for i in <code>history | tail -4 | tr -s " "| cut -d " " -f3-</code> do echo $i done echo "end"</p> <p>Facing a small issue with this. The "i" variable is assigned values like - "cd" "dir1" "rm" "file1" ... i.e the command is sometimes split across spaces and assigned. Instead would like to have the entire line as one command.</p> <p>Any pointers to achieve this ? OR any builtin in bash to execute last n commands in history.</p> hi,

i would like to have a way to execute last N commands from history. For example – cd dir1 rm file1 cd ../dir2 rm file 2 cd ..

say above are the 5 commands. I would like to execute these 5 commands. How to do it ?

I wrote this shell script – repeat.sh.

!/bin/sh

echo “start” for i in history | tail -4 | tr -s " "| cut -d " " -f3- do echo $i done echo “end”

Facing a small issue with this. The “i” variable is assigned values like – “cd” “dir1″ “rm” “file1″ … i.e the command is sometimes split across spaces and assigned. Instead would like to have the entire line as one command.

Any pointers to achieve this ? OR any builtin in bash to execute last n commands in history.

]]> By: jon http://namakajiri.net/complog/useful-bash-tricks-learning-from-history/comment-page-1/#comment-30 jon Sat, 15 Mar 2008 12:48:01 +0000 http://namakajiri.net/complog/useful-bash-variables-learning-from-the-history/#comment-30 <p>@ CR: it means PRESS the alt key toghether with . (point)</p> @ CR: it means PRESS the alt key toghether with . (point)

]]> By: bob http://namakajiri.net/complog/useful-bash-tricks-learning-from-history/comment-page-1/#comment-24 bob Fri, 14 Mar 2008 00:21:11 +0000 http://namakajiri.net/complog/useful-bash-variables-learning-from-the-history/#comment-24 <p>More fun commands are: history (to find the number of a command you want to run:</p> <p>!47 (to run the 47th command) !47:s/search/replace/ (Mix of that and the ^ syntax) !-2 (run the command two previous to the current position in the history</p> More fun commands are: history (to find the number of a command you want to run:

!47 (to run the 47th command) !47:s/search/replace/ (Mix of that and the ^ syntax) !-2 (run the command two previous to the current position in the history

]]> By: Ramsey http://namakajiri.net/complog/useful-bash-tricks-learning-from-history/comment-page-1/#comment-19 Ramsey Mon, 03 Mar 2008 10:31:40 +0000 http://namakajiri.net/complog/useful-bash-variables-learning-from-the-history/#comment-19 <p>You can also use ! to run the last command beginning with those characters. For example, you can run "grep -i "foo" file" then run ten others commands other than grep and then type "!grep" to run the grep command again. This saves me TONS of time.</p> You can also use ! to run the last command beginning with those characters. For example, you can run “grep -i “foo” file” then run ten others commands other than grep and then type “!grep” to run the grep command again. This saves me TONS of time.

]]> By: CR http://namakajiri.net/complog/useful-bash-tricks-learning-from-history/comment-page-1/#comment-16 CR Tue, 26 Feb 2008 20:31:16 +0000 http://namakajiri.net/complog/useful-bash-variables-learning-from-the-history/#comment-16 <p>$ mkdir foo<br /> $ cd ALT<br /> -bash: cd: ALT: No such file or directory</p> <p>doh!</p> $ mkdir foo
$ cd ALT
-bash: cd: ALT: No such file or directory

doh!

]]> By: leoboiko http://namakajiri.net/complog/useful-bash-tricks-learning-from-history/comment-page-1/#comment-15 leoboiko Tue, 26 Feb 2008 19:55:00 +0000 http://namakajiri.net/complog/useful-bash-variables-learning-from-the-history/#comment-15 <p>Newlines added. Alt+. is nice to know, but I think I’ll keep using !$, because of my keyboard layout. The shortcut is actually Meta+., and I keep my Meta key as the Windows key; I find it kind of clunky to press with ‘.’.</p> <p>Or maybe I’m just rationalizing resistence to change =)</p> Newlines added. Alt+. is nice to know, but I think I’ll keep using !$, because of my keyboard layout. The shortcut is actually Meta+., and I keep my Meta key as the Windows key; I find it kind of clunky to press with ‘.’.

Or maybe I’m just rationalizing resistence to change =)

]]> By: Matt Doar http://namakajiri.net/complog/useful-bash-tricks-learning-from-history/comment-page-1/#comment-14 Matt Doar Tue, 26 Feb 2008 19:19:41 +0000 http://namakajiri.net/complog/useful-bash-variables-learning-from-the-history/#comment-14 <p>Ack, insert new line after the mkdir commands</p> Ack, insert new line after the mkdir commands

]]> By: Matt Doar http://namakajiri.net/complog/useful-bash-tricks-learning-from-history/comment-page-1/#comment-13 Matt Doar Tue, 26 Feb 2008 19:19:20 +0000 http://namakajiri.net/complog/useful-bash-variables-learning-from-the-history/#comment-13 <p>I believe that ALT . is a shortcut for the last part of the last command too. So instead of </p> <p>mkdir foo<br /> cd foo</p> <p>I type </p> <p>mkdir foo<br /> cd ALT .</p> <p>and the result is the same</p> I believe that ALT . is a shortcut for the last part of the last command too. So instead of

mkdir foo
cd foo

I type

mkdir foo
cd ALT .

and the result is the same

]]> By: leoboiko http://namakajiri.net/complog/useful-bash-tricks-learning-from-history/comment-page-1/#comment-12 leoboiko Tue, 26 Feb 2008 18:42:31 +0000 http://namakajiri.net/complog/useful-bash-variables-learning-from-the-history/#comment-12 <p>that’s interesting, thanks.</p> that’s interesting, thanks.

]]> By: Peteris Krumins http://namakajiri.net/complog/useful-bash-tricks-learning-from-history/comment-page-1/#comment-11 Peteris Krumins Tue, 26 Feb 2008 18:36:59 +0000 http://namakajiri.net/complog/useful-bash-variables-learning-from-the-history/#comment-11 <p>Hey! I recently wrote a '<a href="http://www.catonmat.net/blog/the-definitive-guide-to-bash-command-line-history/" rel="nofollow">Definitive Guide to Bash History</a>', you might be interested:</p> <p>http://www.catonmat.net/blog/the-definitive-guide-to-bash-command-line-history/</p> Hey! I recently wrote a ‘Definitive Guide to Bash History‘, you might be interested:

http://www.catonmat.net/blog/the-definitive-guide-to-bash-command-line-history/

]]> By: tabgal http://namakajiri.net/complog/useful-bash-tricks-learning-from-history/comment-page-1/#comment-9 tabgal Sun, 24 Feb 2008 13:19:49 +0000 http://namakajiri.net/complog/useful-bash-variables-learning-from-the-history/#comment-9 <p>"^<foo>^<bar> Repeats the last command, substituting “bar” for the first “foo” (like s/foo/bar/ in vi)."</p> <p>OHMAGA!!!1111 Era isso que eu queria!</p> <p>aptitude search liblolcats<br /> aptitude install liblolcats</p> “^<foo>^<bar> Repeats the last command, substituting “bar” for the first “foo” (like s/foo/bar/ in vi).”

OHMAGA!!!1111 Era isso que eu queria!

aptitude search liblolcats
aptitude install liblolcats

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