Commands by psykotron

Commands by psykotron (4)

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Find common groups between two users
This is sample output - yours may be different.
2

grep -xFf <(groups user1|cut -f3- -d\ |sed 's/ /\n/g') <(groups user2|cut -f3- -d\ |sed 's/ /\n/g')

psykotron · 2015-03-04 18:23:59 9
Figure out what shell you're running

short, sweet, and works after sudoing a new shell. Show Sample Output
This is sample output - yours may be different.
```
  PID TTY          TIME CMD
 9155 pts/0    00:00:00 bash
```
3

ps -p $$

psykotron · 2011-02-05 16:22:17 4
Extract tarball from internet without local saving
This is sample output - yours may be different.
8

curl http://example.com/a.gz | tar xz

psykotron · 2009-12-20 18:47:49 17
Another Matrix Style Implementation

A bit different from some of the other submissions. Has bold and uses all c printable characters. Change the bs=value to speed up and increase the sizes of the bold and non-bold strings.
This is sample output - yours may be different.
5

echo -ne "\e[32m" ; while true ; do echo -ne "\e[$(($RANDOM % 2 + 1))m" ; tr -c "[:print:]" " " < /dev/urandom | dd count=1 bs=50 2> /dev/null ; done

psykotron · 2009-12-19 19:05:04 5

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Time conversion/format using the date command

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"

change dinosaur poop into gold

if firefox is running the database is locked, so you need to copy the places.sqlite file temporarily somewhere to be able to query it...

power off system in X hours form the current time, here X=2

Nice weather forecast on your shell

Change Seville for your prefered city.

Show biggest files/directories, biggest first with 'k,m,g' eyecandy

I use this on debian testing, works like the other sorted du variants, but i like small numbers and suffixes :)

Create several copies of a file

Copy a file to a range of other files.

camelcase to underscore

For mac users !

Count the number of pages of all PDFs in current directory and all subdirs, recursively

Print the detailed statistics of transferred bytes by the firewall rules

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