Commands by mwgamera

Commands by mwgamera (6)

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convert from decimal to hexadecimal
This is sample output - yours may be different.
-3

hex() { echo $1 16op | dc; }

mwgamera · 2011-12-12 17:12:31 0
Join lines split with backslash at the end

Joins each line that end with backslash (common way to mark line continuation in many languages) with the following one while removing the backslash. Show Sample Output
This is sample output - yours may be different.
```
$ sed -e '/\\$/{:0;N;s/\\\n//;t0}' <<END
> Hello \\
> world!
> END
Hello world!
$ echo 'scale=70; 127/131' | bc | sed -e '/\\$/{:0;N;s/\\\n//;t0}'
.9694656488549618320610687022900763358778625954198473282442748091603053
```
9

sed -e '/\\$/{:0;N;s/\\\n//;t0}'

mwgamera · 2011-10-09 14:35:23 4
Calculate N!

More readable version of factorial calculation using standard desktop calculator instead of bc.
This is sample output - yours may be different.
0

dc -e '10 [q]sq[dd1=q1-lxx*]dsxxp'

mwgamera · 2011-02-16 19:00:21 2
Using mplayer to play the audio only but suppress the video
This is sample output - yours may be different.
9

mplayer -novideo something.mpg

mwgamera · 2010-02-27 22:25:47 1
Get length of current playlist in xmms2
This is sample output - yours may be different.
1

xmms2 list | sed -n -e '1i\0' -e 's/^.*($[0-9]*$:$[0-9]*$)$/\1 60*\2++/gp' -e '$a\60op' | dc | sed -e 's/^ *//' -e 's/ /:/g'

mwgamera · 2010-02-15 10:37:48 0
Get URLs matching some xmms2 search
This is sample output - yours may be different.
0

xmms2 info $(xmms2 mlib search '<query>' | sed -ne 's/^00*$[1-9][0-9]*$.*$/\1/p') | awk -F' = ' '$1~/ url$/{print$2}'

mwgamera · 2010-02-15 10:24:15 0

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Create a directory and cd into it

This creates a bash function `take` that you can call with the name of the directory as the first parameter. Add the function to ~/.bashrc to have it available anytime.

Get the beats per minute from an audio track

Requires bpm-tools https://www.pogo.org.uk/~mark/bpm-tools/

Check a server is up. If it isn't mail me.

This version uses netcat to check a particular service.

Display the list of all opened tabs from Firefox via a python one-liner and a shell hack to deal with python indentation.

You have to do that before : $ cd ~/.mozilla/firefox/ Require bash. If you use something else, you may use $ echo | python Forked from ArkSeth python script.

Show one line summaries of all DEB packages installed on Ubuntu based on pattern search

I sometimes want to know what packages are installed on my Ubuntu system. I still haven't figured out how to use aptitude effectively, so this is the next best thing. This allows finding by name. The grep '^ii' limits the display to only installed packages. If this is not specified, then it includes listing of non-installed packages as well.

Found how how much memory in kB $PID is occupying in Linux

The "proportional set size" is probably the closest representation of how much active memory a process is using in the Linux virtual memory stack. This number should also closely represent the %mem found in ps(1), htop(1), and other utilities.

Find the package that installed a command

automount samba shares as devices in /mnt/

the middle command between the ; and ; is the vi commands that insert that line into the last line of the file, the esc with the carets is literally hitting the escape key, you have to have the smbfs package installed to do it, I use it to access my iTunes music on my mac from my linux PC's with amarok so I can play the music anywhere in the house. among other things, it allows you to access the files on that share from your computer anytime you're on that network.

clear all non-ascii chars of file.txt

Generate MD5 hash for a string

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