Commands by leovailati

Commands by leovailati (5)

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Stream audio over ssh

This one doesn't need to convert to wav.
This is sample output - yours may be different.
6

ssh [user]@[address] "mpg321 -" < [file].mp3

leovailati · 2010-07-30 00:23:13 2
See udev at work

See how your system works with pendrives/mice/monitors/whatever-you-can-plug-in. Use cases: see on which /dev/... your peripherals are, find out if a specific udev rule is being applied correctly.
This is sample output - yours may be different.
20

udevadm monitor

leovailati · 2010-06-27 00:16:41 15
Use tagged vlans

Great for sysadmins! Don't forget to pass the vlan to your port in a manageable switch. After vconfig, you should use sudo ifconfig eth0.[VID] up Now the interface is up, you can use dhclient or ifconfig again to get an ip address.
This is sample output - yours may be different.
1

sudo vconfig add eth0 [VID]

leovailati · 2010-05-15 21:32:24 2
Change attributes of files so you can edit them

I had problems in Ubuntu while trying to edit /etc/resolv.conf, even with sudo I couldn't make any change. After a 2 minutes search on google I found this command. Hope someone finds it useful. It works like chmod, with + and - to denote which attributes are being added and which are being removed. See other attributes on man pages or on wikipedia http://en.wikipedia.org/wiki/Chattr
This is sample output - yours may be different.
1

sudo chattr -i <file that cannot be modified>

leovailati · 2010-03-25 03:14:34 2
Move itens from subdirectories to current directory

You WILL have problems if the files have the same name. Use cases: consolidate music library and unify photos (especially if your camera separates images by dates). After running the command and verifying if there was no name issues, you can use ls -d */ | sed -e 's/^/\"/g' -e 's/$/\"/g' | xargs rm -r to remove now empty subdirectories.
This is sample output - yours may be different.
-1

ls -d */* | sed -e 's/^/\"/g' -e 's/$/\"/g' | xargs mv -t $(pwd)

leovailati · 2010-03-01 23:43:26 4

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Replace "space" char with "dot" char in current directory file names

Launch a game, like Tetris, when apt-get installing an app larger than 50 Megabytes

Change the APP variable's value to whatever you want to install. Depending on how fast your machine is, you'll want to adjust the value 50 to something else. You might also want to play a different game than Gnometris - just make sure it's a GUI game.

Install pip with Proxy

Installs pip packages defining a proxy

Detect illegal access to kernel space, potentially useful for Meltdown detection

Based on capsule8 agent examples, not rigorously tested

Create a tar file with the current date in the name.

Same, but count of signs is little less :) .

Send e-mail if host is 'dead' or not reachable

Cleaner with a mailto assignment in crontab (if the command fails you get an email): MAILTO=admin@example.com 10,30,50 * * * * ping -q -c1 -w3 192.168.0.14 >/dev/null

Listen to a song from youtube with youtube-dl and mpv

Explanation Firstly the function checks if user gave it any input, and notifies the user if they failed to do so. If user has inputed a search string, the function will call upon youtube-dl to find url of the audio of the first matching youtube video and play that with mpv. Call function by wrapping search string in quotes: listen-to-yt "sultans of swing" You have to paste the line in your .zshrc and source .zshrc for it to work. Limitations The dependancies are youtube-dl and mpv. this oneliner is stolen from http://www.bashoneliners.com/oneliners/302/

Get the Volume labels all bitlocker volumes had before being encrypted

Get information of volume labels of bitlocker volumes, even if they are encrypted and locked (no access to filesystem, no password provided). Note that the volume labels can have spaces, but only if you name then before encryption. Renaming a bitlocker partition after being encrypted does not have the same effect as doing it before.

Massive change of file extension (bash)

Change the file extension in batch. Useful to create output file names with same input name but distinct extension by including logic inside the loop

find which lines in a file are longer than N characters

Filter out lines of input that contain 72, or fewer, characters. This uses bash only. ${#i} is the number of characters in variable i.

Stay in the loop…

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