Web Development & Stuff » Shell

Return exit code of previous shell command

admin — Sat, 03 Oct 2009 14:45:37 +0000

You can return the exit/return code of the command you just ran in OSX/Linux using this simple command:

echo $?

This is handy when debugging scripts that rely on shell command return values.

Reload bash_profile / profile without starting a new shell session

admin — Wed, 04 Mar 2009 14:47:34 +0000

I always used to log-out / log-back-in to shell, to allow changes in my .bash_profile to kick in. I’m guessing this would work in OSX with your .profile file too but I’ve not tested it. Anyways, I discovered you can reload the script on the fly using:

1	source ~/.bash_profile

Mount remote file system on your local file system over SSH – SSHFS

admin — Wed, 25 Feb 2009 23:07:26 +0000

Lots of love going about today! This time, the recipient is SSHFS which allows you to mount a remote filing system onto your local tree over SSH. In a virtual hosting environment (/vhosts/ etc) it’s pure joy to work with.

You’ll need to install SSHFS on the client (the machine you want to mount the remote system on). All you need on the remote system is SSH. This is already installed on most systems.

You can install SSHFS on OSX with Mac Ports:

1	port install sshfs

On the local client system add the user you’re going to connect with to the fuse group. That group was created when you installed SSHFS:

1	gpasswd -a localuser fuse

Create a directory on the local filing system to use as a mount point:

1	mkdir /vhosts_servername/

Now connect to the remote system using a command line like this on the client:

1	sshfs localuser@yourdomain.com:/remote_directory/ /vhosts_servername

Nice ;]

MySQL export SQL query as file

admin — Sun, 18 Jan 2009 10:35:00 +0000

This will dump an SQL statement into a file:

1	mysql -u username -p database_name -e "SQL_STATEMENT" > file.data

SVN ignore directory contents

admin — Sat, 17 Jan 2009 10:40:33 +0000

If you want to ignore (skip) files inside a directory with SVN:

1	svn pe svn:ignore smarty/templates_c

This will prompt you for a pattern (*.php) via your editor of choice. So you’ll need the EDITOR environment variable set in your ~bash.rc / .profile etc

1	EDITOR=vi; export EDITOR

Update (14/04/09): This only ignores files that are not already version controlled (inside SVN). So if you’re trying to ignore a directory that is already populated with version controlled files, you must svn delete them and re-populate the directory with non-version controlled copies. So make sure you back them up before the svn delete!