Commands by pyrho

Commands by pyrho (5)

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Vim: Switch from Horizontal split to Vertical split

This allows to switch from horizontal to vertical split, putting the current buffer on the right side of the vertical split. To put it on the right use ^W-H. In a similar way, to switch from Vertical to Horizontal, do ^W-J (for bottom) and ^W-K (for top), but you vimers all guessed that one already :P
This is sample output - yours may be different.
13

^W-L

pyrho · 2010-01-05 12:20:55 0
Merge video files together using mencoder (part of mplayer)

Using mplayer's mencoder, you can merge video files together. '-oac' specifies the audio encoding (here copy, to just copy and not compress) '-ovc' specifies the video encoding (same thing).
This is sample output - yours may be different.
4

mencoder -oac copy -ovc copy part1.avi part2.avi part3.avi -o full_movie.avi

pyrho · 2009-05-02 07:44:32 1
Jump to a song in your XMMS2 playlist, based on song title/artist

Usage: Declare this function in your Shell, then use it like this: > jumpTo foo The script will search for the 'foo' pattern in your current xmms2 playlist (artist or songname), and play the first occurence of it !
This is sample output - yours may be different.
1

function jumpTo { xmms2 jump `xmms2 list | grep -i '$1' | head -n 1 | tail -n 1 | sed -re 's@.+\[(.+)/.+\] (.+)@\1@'`; }

pyrho · 2009-04-10 13:43:57 0
Bring the word under the cursor on the :ex line in Vim

Very handy to bring the word currently under the cursor into a :s command in Vim. Example: If the cursor was on the word "eggs": :s/ ==> :s/eggs
This is sample output - yours may be different.
34

:<C-R><C-W>

pyrho · 2009-04-08 21:25:06 4
Generate a random number in a range

This commands lets you generate a random number between the range [$START; $END]. Show Sample Output
This is sample output - yours may be different.
```
31
```
0

START=20; END=50 echo $(($START+(`od -An -N2 -i /dev/random`)%($END-$START+1)))

pyrho · 2009-02-17 05:05:30 4

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Using a single sudo to run multiple && arguments

Bash's here string

View non-printing characters with cat

Useful to detect number of tabs in an empty line, DOS newline (carriage return + newline). A tool that can help you understand why your parsing is not working.

change ownership en masse of files owned by a specific user, including files and directories with spaces

In the example, uid 0 is root. foo:foo are the user:group you want to make owner and group. '.' is the "current directory and below." -print0 and -0 indicate that filenames and directories "are terminated by a null character instead of by whitespace."

Show all listening and established ports TCP and UDP together with the PID of the associated process

Easy to remenber. Fot TCP only use: netstat -plant

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

autossh + ssh + screen = super rad perma-sessions

Only useful for really flakey connections (but im stuck with one for now). Though if youre in this situation ive found this to be a good way to run autossh and it does a pretty good job of detecting when the session is down and restarting. Combined with the -t and screen commands this pops you back into your working session lickety split w/ as few headaches as possible. And if autossh is a bit slow at detecting the downed ssh connection, just run this in another tab/terminal window to notify autossh that it should drop it and start over. Basically for when polling is too slow. kill -SIGUSR1 `pgrep autossh`

Install pip with Proxy

Installs pip packages defining a proxy

Create a 5 MB blank file via a seek hole

Similar to the original, but is much faster since it only needs to write the last byte as zero. A diff on testfile and testfile.seek will return that they are the same.

Create the authorization header required for a Twitter stream feed

This is the FOURTH in a set of five commands. Please see my other commands for the previous three steps. This command builds the authorization header required by Twitter. For this command to work, see my previous 3 commands (step1, step2 and step3) as they are required to build the environment variables used in this command. For more information on the authorization header, go to dev.twitter.com/apps, click on any of your apps (or create a new one) and then click on the "OAuth Tool" tab.

function to edit your history file

eh stands for Edit History . Frequently, I'll mistype a command, and then step back through my history and correct the command. As a result, both the correct and incorrect commands are in my history file. I wanted a simple way to remove the incorrect command so I don't run it by mistake. . When running this function, first the ~/bash_history file is updated, then you edit the file in vi, and then the saved history file is loaded back into memory for current usage. . while in vi, remember that `Shift-G` sends you to the bottom of the file, and `dd` removes a line. . this command is different than bash built-in `fc` because it does not run the command after editing.

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