/kb » Shell

SSH aliases

hgrimelid — Fri, 18 Jun 2010 08:02:56 +0000

In ~/.ssh/config add the following:

Host ALIAS
HostName DOMAIN
User USERNAME
Port PORT_NUMBER

Compile Vim in Snow Leopard

hgrimelid — Wed, 28 Apr 2010 09:01:58 +0000

./configure –enable-pythoninterp –with-macsdk=10.6

via Chris Moyer: OSX, Vim, and Python.

Git: Start a new branch after making changes

hgrimelid — Fri, 23 Apr 2010 10:39:39 +0000

Sometimes I realize that my latest changes actually should belong to another branch than the one I’m currently working on. The easy way to add the changes to a new branch is to use the stash command.

[… changes …]
git stash
git stash branch name_of_new_branch
git commit […]
git push origin name_of_new_branch

Ref. git stash.

Exclude several files or directories from tar

hgrimelid — Sun, 09 Aug 2009 14:08:34 +0000

It’s very useful to be able to exclude certain files or directories when using tar. Here’s how I did in Leopard:

tar czvf FILENAME.tgz --exclude={.svn,wiki*,static} FILES_OR_DIRS_TO_TAR

Make SSHKeychain work in Leopard

hgrimelid — Mon, 22 Jun 2009 08:43:03 +0000

Here’s how I set up SSHKeychain on my Mac:

Modify the package content as described
Add stuff to .bashrc/.profile
Add keys to SSHKeychain: Preferences > SSH Keys
Check Manage (and modify) global environment variables (this probably has no effect, ref 2.)

Open Finder for current directory from command line

hgrimelid — Fri, 09 Jan 2009 07:41:22 +0000

I just learned how to open a Finder window directly from the command line.

open .

Yes, it’s actually that easy, and the open command is quite handy some times. This is from the open man page.

The open command opens a file (or a directory or URL), just as if you had double-clicked the
file’s icon. If no application name is specified, the default application as determined via
LaunchServices is used to open the specified files.

This means that you can actually open anything from the command line with the open command. Go ahead and try it out!

Bash shell prompt colors

hgrimelid — Thu, 07 Aug 2008 22:25:57 +0000

Here are the colors available for use in the bash shell prompt:

Black	01;30
Blue	01;34
Brown	01;33
Cyan	01;36
Green	01;32
Red	01;31
Pink	01;35
Yellow	01;33

This is my shell prompt:

PS1='\[\033[01;32m\]\u@\h \[\033[01;35m\]\W \$ \[\033[00m\]'

Which produces output on the form user@computer DIRECTORY $. I use different colors for different computers/users.

Root partition free space

hgrimelid — Sat, 17 May 2008 17:21:15 +0000

du -xh --max-depth=1  /

On using find

hgrimelid — Thu, 15 May 2008 10:49:24 +0000

find is an extremely powerful command. In order to leave the directory matching *DIRECTORY* out from your search for .txt-files:

find . -path '*DIRECTORY*' -prune -o -iname '*.txt' -print

If you’re using xargs together with find and xargs complains about file names with spaces, use:

find . YOURFINDOPTIONSHERE -print0 | xargs -0 rm -rf

Finding files larger than a certain limit:

find . -size +200M -print0 | xargs -0 ls -lh

Deleting the complementary files:

find . ! -name "*.mp3" -delete

Courtesy of HÃ¥kon.

Please note that these commands pertains to the BSD find as on Mac OS 10.5.

UPDATE 20080517: Looking for file size
UPDATE 20080602: Added deleting complement

grep through several files

hgrimelid — Thu, 10 Apr 2008 08:13:05 +0000

By adding option -H to the grep command, the filename will be output together with the matching line:

grep -i -H TEXT_TO_SEARCH_FOR

-i turns on ignore case.