Commands by mbirk

Commands by mbirk (3)

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View and review the system process tree.

The "pstree" command uses special line-drawing characters. However, when piped into the "less" pager, these are normally disabled.
This is sample output - yours may be different.
7

pstree -Gap | less -r

mbirk · 2009-05-21 05:15:16 0
Compare two directory trees.

This uses Bash's "process substitution" feature to compare (using diff) the output of two different process pipelines.
This is sample output - yours may be different.
34

diff <(cd dir1 && find | sort) <(cd dir2 && find | sort)

mbirk · 2009-05-21 04:44:29 7
Skip over .svn directories when using the "find" command.

The "find" command can be annoying when used inside of a Subversion (or CVS) working directory. Obviously, you can combine this with other predicates and commands to create a more elaborate pipeline: find /var/svn -type f -not \( -name .svn -prune \) -print0 | xargs -0 md5sum Note: You can use my "dont-go-there.sh" script to wrap the "find" command and do this automatically at http://forwardlateral.com/blog/2006/02/27/dont-go-there/
This is sample output - yours may be different.
5

find . -not \( -name .svn -prune \)

mbirk · 2009-05-20 19:45:24 0

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Rename files in batch

Calculates the date 2 weeks ago from Saturday the specified format.

Good for automating reports that need to run from between two dates.

Create incremental backups of individual folders using find and tar-gzip

Problem: I wanted to backup user data individually, using and incremental method. In this example, all user data is located in "/mnt/storage/profiles", and about 25 folders inside, each with a username ( /mnt/storage/profiles/mike; /mnt/storage/profiles/lucy ...) I need each individual folder backed up, not the whole "/mnt/storage/profiles". So, using find while excluding directories depth and creating two variables (tarfile=username & desdir=destination), tar will create a .tgz file for each folder, resulting in a "mike_2013-12-05.tgz" and "lucy_2013-12-05.tgz".

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Simple MAC Changeing

The 00:11:22:33:44:55 is whatever you want your new MAC address to be. Sometimes sudo should be used in front if you need to.

Work out numerical last month

Work out last months numerical value.

Insert an element into xml

This inserts an element as last child under /breakfast_menu/food in simple.xml. xml used - http://www.w3schools.com/xml/simple.xml

Create/open/use encrypted directory

Create/open/use an encrypted directory encfs needs to be installed During creation easiest to use default values The encrypted files will be in ~/.crypt and you will work as usual in ~/crypt To close the encrypted directory run: fusermount -u ~/crypt When you switch off the computer the encrypted directory will be automatically closed This example uses /home/user/crypt as encrypted directory I use ubuntu linux 8.04 and I am also the creator of www.minihowto.org

Get movie length

full path listing in /directory/path/* of javascript files.

file listing in /directory/path/* of specific files such as javascript(js) .

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