Commands by oernii2

Commands by oernii2 (13)

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Find out local DISPLAY number

Not always does Xorg run on :0. For times like those, this script allows you to find out which it is.
This is sample output - yours may be different.
-2

export DISPLAY=$(tr '\000' '\n' < /proc/`pidof Xorg`/cmdline | egrep '^:[0-9]+')

oernii2 · 2012-12-18 07:26:16 7
parse html/stdin with lynx

strips html from stdin Show Sample Output
This is sample output - yours may be different.
```
some_html_generating_program | html2ascii
```
2

alias html2ascii='lynx -force_html -stdin -dump -nolist'

oernii2 · 2012-04-12 14:02:44 293
delay: a simple scheduler

the "delay" utility is an invaluable tool for me. with gnu-screen it allows you to schedule something and have it run and output to the current terminal, unlike "at". You can also use it like "sleep" with seconds and also with date: delay until 13:33 friday && echo test get it from: http://onegeek.org/~tom/software/delay/current/delay.c (author: Tom Rothamel)
This is sample output - yours may be different.
1

delay until 16 && import_db.sh

oernii2 · 2012-03-01 12:38:32 17
Parallel XZ with progress bar

You need: pxz for the actual work (http://jnovy.fedorapeople.org/pxz/). The function could be better with better multifile and stdin/out support.
This is sample output - yours may be different.
0

function xzv() { THREADS=`grep processor /proc/cpuinfo | wc -l`; for file in $*; do pv -s `stat -c%s $file` < $file | pxz -q -T $THREADS > $file.xz ; done; }

oernii2 · 2011-12-14 08:22:08 6
Print full LVM LV paths (for copy&paste)
This is sample output - yours may be different.
0

lvs | awk '{printf("/dev/%- 40s %-7s %10s %20s %6s %5s %5s %5s %5s\n", $2 "/" $1, $3, $4, $5, $6, $7, $8, $9, $10)}'

oernii2 · 2011-12-08 16:35:59 9
intercept stdout/stderr of another process
This is sample output - yours may be different.
59

strace -ff -e trace=write -e write=1,2 -p SOME_PID

oernii2 · 2010-04-20 08:55:54 14
Temporarily ignore known SSH hosts

you may create an alias also, which I did ;-) alias sshu="ssh -o UserKnownHostsFile=/dev/null "
This is sample output - yours may be different.
9

ssh -o UserKnownHostsFile=/dev/null root@192.168.1.1

oernii2 · 2010-04-08 14:55:58 5

every 1sec sends DD the USR1 signal which causes DD to print its progress. Show Sample Output

while :;do killall -USR1 dd;sleep 1;done

oernii2 · 2010-04-07 09:23:31 10

dd with progress bar

piping through 'pv' shows a simple progress/speed bar for dd. This is a replacement for my otherwise favorite 'while :;do killall -USR1 dd;sleep 1;done' Show Sample Output
This is sample output - yours may be different.
```
66.5MB 0:00:23 [2.78MB/s] [        <=>   ]
```
9

dd if=/dev/nst0 |pv|dd of=restored_file.tar

oernii2 · 2010-04-07 09:21:18 24

Show a simple table with disk IO for the specified host. you monitor a LOT of different thing. Mostly used for MRTG and similar, but this is nice for a quick look, which disk is busy. "public" is your SNMP community ensure that snmpd is running on the host which you intend to monitor Show Sample Output

watch -n1 snmptable -v2c -c public localhost diskIOTable

oernii2 · 2010-03-19 11:31:52 5

More precise BASH debugging
This is sample output - yours may be different.
18

env PS4=' ${BASH_SOURCE}:${LINENO}(${FUNCNAME[0]}) ' sh -x /etc/profile

oernii2 · 2009-10-07 14:44:59 16
Recreate all initrd files

Do this with caution.
This is sample output - yours may be different.
-1

for kern in $(grep "initrd " /boot/grub/grub.conf|grep -v ^#|cut -f 2- -d-|sed -e 's/\.img//g'); do mkinitrd -v -f /boot/initrd-$kern.img $kern; done

oernii2 · 2009-08-19 09:53:29 504
stop windows update

Windows only: stops windows update and the nagging restart window. You need your admin password for this one.
This is sample output - yours may be different.
4

runas /user:administrator net stop wuauserv

oernii2 · 2009-06-30 09:29:03 18

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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list block devices

Shows all block devices in a tree with descruptions of what they are.

Install pip with Proxy

Installs pip packages defining a proxy

SED - Substitute string in next line

source: http://sed.sourceforge.net/sed1line.txt

find both total size and number of files below any given svn directory

afaik, svn doesn't have a good, scriptable way of telling you these two basic pieces of information.

Sum file sizes

Find the date of the first commit in a git repository

Finds the date of the first commit in a git repository branch

FInd the 10 biggest files taking up disk space

This combines the above two command into one. Note that you can leave off the last two commands and simply run the command as "find /home/ -type f -exec du {} \; 2>/dev/null | sort -n | tail -n 10" The last two commands above just convert the output into human readable format.

Create a backdoor on a machine to allow remote connection to bash

This will launch a listener on the machine that will wait for a connection on port 1234. When you connect from a remote machine with something like : nc 192.168.0.1 1234 You will have console access to the machine through bash.

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"

check open ports without netstat or lsof

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