Commands by jedahan

Commands by jedahan (4)

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Play a random [album/movie] two rows down

Good if you have your music like Artist/(Year) Album/Song
This is sample output - yours may be different.
-3

mplayer "$(find . -maxdepth 2 -mindepth 2 -type d | grep -v '^.$' | sort -R | head -n1)"/*

jedahan · 2011-03-15 01:19:59 0
List all authors of a particular git project

This should work even if the output format changes.
This is sample output - yours may be different.
18

git log --format='%aN' | sort -u

jedahan · 2010-01-07 18:55:21 3
List all authors of a particular git project

List everyone who committed to a particular project, listed alphabetically. To list by commits, add -n to the shortlog. Show Sample Output
This is sample output - yours may be different.
```
Foo Bar
Bob Barker
BBlum
```
4

git shortlog -s | cut -c8-

jedahan · 2010-01-07 18:04:01 1
Find the process you are looking for minus the grepped one

alias ps?='psg' for maximum hawtness. Works in bash or zsh. Show Sample Output
This is sample output - yours may be different.
```
`--> ps? urxvt
root   5850  0.0  0.0  74404  3812 ?        Ss   20:21   0:00 urxvt
root  25961  0.0  0.0  74388  3732 ?        Ss   20:34   0:00 urxvt
```
-5

psg() { ps aux | grep "[${1[1]}]${1[2,-1]}"; }

jedahan · 2009-09-07 04:37:11 3

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Perpetual calendar

Gets any date since today. Other examples of recognized expressions are "2 years 4 days ago", "7 months" (in the future), "next Sunday", "yesterday", "tomorrow", etc.

How to run X without any graphics hardware

This starts an X server using Xvfb(1) (no graphics hardware required), then starts a VNC server on the display. Change :1 if there's a conflict with an existing display, and change 800x600x24 to suit your tastes (24 is the bit depth, 800x600 is the size). This command obviously requires X be installed, and also x11vnc(1); both are available via your favourite package manager. You can also use another VNC server of your choosing, as long as DISPLAY is set to the display of Xvfb(1). To change your desktop environment (the default is twm(1), which is rather fail), you can add it to your ~/.xinitrc file (see the startx(1) manpage for details).

check open ports without netstat or lsof

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.

Find the most recent snapshot for an AWS EBS volume

Uses the python-based AWS CLI (https://aws.amazon.com/cli/) and the JSON query tool, JQ (https://stedolan.github.io/jq/)

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

CPU architecture details

This command list all CPU technical infos.

Check for login failures and summarize

This command checks for the number of times when someone has tried to login to your server and failed. If there are a lot, then that user is being targeted on your system and you might want to make sure that user either has remote logins disabled, or has a strong password, or both. If your output has an "invalid" line, it is a summary of all logins from users that don't exist on your system.

Split a file one piece at a time, when using the split command isn't an option (not enough disk space)

bs = buffer size (basically defined the size of a "unit" used by count and skip) count = the number of buffers to copy (16m * 32 = 1/2 gig) skip = (32 * 2) we are grabbing piece 3...which means 2 have already been written so skip (2 * count) i will edit this later if i can to make this all more understandable

Block all FaceBook traffic

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