Commands by peter4512

Commands by peter4512 (7)

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This uses spotlight indices to find files that have recently been added. Other options include underscore separated versions of: this week, this month, this year; today, yesterday. Show Sample Output

mdfind 'kMDItemFSCreationDate >= $time.this_month'

peter4512 · 2012-11-13 12:50:51 5

Automatically find and re-attach to a detached screen session

I alias this as "tach": alias tach='screen -x `screen -ls | grep Detached | cut -c -10`' If you have several detached sessions it will just grab the first one. If you're running nested screens you can open new outer windows and run tach repeatedly to grab all the detached sessions into that one. Show Sample Output
This is sample output - yours may be different.
```
<sample output doesn't make sense--screen session gets re-attached>
```
-3

screen -x `screen -ls | grep Detached | cut -c -10`

peter4512 · 2012-03-01 14:13:09 8
List detached screen sessions

If you have many screen sessions, it can be difficult to find the id of the one you just detached from so you can re-attach using `screen -x -S ` Show Sample Output
This is sample output - yours may be different.
```
$ screen -ls | grep D
	16017.tiny	(Detached)
	22797.super	(Detached)
```
-1

screen -ls | grep D

peter4512 · 2012-03-01 14:05:40 5
tell if a port is in use

if you don't do --numeric-ports, netstat will try to resolve them to names Show Sample Output
This is sample output - yours may be different.
```
tcp        0      0 localhost.localdomain:8321  *:*                         LISTEN
tcp        0      0 ::1:8321                    *:*                         LISTEN
```
1

netstat -a --numeric-ports | grep 8321

peter4512 · 2012-01-20 22:00:56 7
colorize and continuously tail two files

(follow with next command) tail -f from.log | colorize.pl +l20:".*" & Use with http://www.commandlinefu.com/commands/view/10031/intercept-monitor-and-manipulate-a-tcp-connection. - can use to view output of tees that send traffic to files - output will be interwoven with red for sent traffic and green for received. get colorize.pl from http://www.flinkmann.de/71-1-Colorizepl.html
This is sample output - yours may be different.
-4

tail -f to.log | colorize.pl +l10:".*" &

peter4512 · 2012-01-20 21:46:47 7
Simple find

Just search the root of the file hierarchy for matches for a text string. Send errors to a file rather than stdout.
This is sample output - yours may be different.
0

find / -name '*android*' 2>errors.txt

peter4512 · 2012-01-11 15:16:58 7
Intercept, monitor and manipulate a TCP connection.

This will handle multiple incoming connections. Also, found sed works best with -u flag (unbuffered io). Easiest way I've found to get ncat is to install nmap.
This is sample output - yours may be different.
1

ncat -l -p 1234 --sh-exec "tee -a to.log | nc machine port | tee -a from.log"

peter4512 · 2012-01-11 15:14:17 5

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

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Show demo of toilet fonts

Lists a sample of all installed toilet fonts

RTFM function

Some commands have more information on 'info' than in the man pages

shows history of logins on the server

outputs a history of logins on the server (top 10, when piped to 'head'); optional flags: '-a' put the hostname at the end of the line (good for long hostnames), '-i' post the IP instead of the hostname, '-F' put the full login and logout times, rather than short times.

Get your outgoing IP address

Given a file path, unplug the USB device on which the file is located (the file must be on an USB device !)

You have an external USB drive or key. Apply this command (using the file path of anything on your device) and it will simulate the unplug of this device. If you just want the port, just type : echo $(sudo lshw -businfo | grep -B 1 -m 1 $(df "/path/to/file" | tail -1 | awk '{print $1}' | cut -c 6-8) | head -n 1 | awk '{print $1}' | cut -c 5- | tr ":" "-")

Colorize make, gcc, and diff output

Colorize output of make, gcc/g++ or diff, making it easier to read at a glance. They are not distributed with make, diff or gcc, but are usually available in the repositories.

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

Get full from half remembered commands

Show all commands having the part known by you. Eg: $apropos pdf | less

gets your public IP address

Matrix Style

Same as the cool matrix style command ( http://www.commandlinefu.com/commands/view/3652/matrix-style ), except replacing the printed character with randomness. The command mentioned is much faster and thus more true to the matrix. However, mine can be optimized, but I wasted ... i mean spent enough time on it already

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

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Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

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