Commands by nottings

Commands by nottings (13)

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generate a randome 10 character password
This is sample output - yours may be different.
7

tr -dc A-Za-z0-9_ < /dev/urandom | head -c 10 | xargs

nottings · 2012-10-17 14:04:14 3
stop man page content from disappearing on exit

stop man page content from disappearing on exit echo "export LESS='FiX'" >> ~/.bashrc man bash 'q'uit out of man page content will stay on screen Show Sample Output
This is sample output - yours may be different.
```
man bash
'q'uit out of man page
content will stay on screen
```
7

echo "export LESS='FiX'" >> ~/.bashrc

nottings · 2010-11-08 21:58:25 3
Show exit status of all portions of a piped command eg. ls |this_doesn't_exist |wc
This is sample output - yours may be different.
5

echo ${PIPESTATUS[@]}

nottings · 2010-11-01 21:46:58 0
direct a single stream of input (ls) to multiple readers (grep & wc) without using temporary files
This is sample output - yours may be different.
8

ls |tee >(grep xxx |wc >xxx.count) >(grep yyy |wc >yyy.count) |grep zzz |wc >zzz.count

nottings · 2010-10-25 17:49:14 0
display date of last time a process was started in `date` format

STARTED Mon Oct 18 04:02:01 2010 Show Sample Output
This is sample output - yours may be different.
```
STARTED
Mon Oct 18 04:02:01 2010
```
5

ps -o lstart <pid>

nottings · 2010-10-18 17:09:02 0

bash -x ./post_to_commandlinefu.sh

nottings · 2009-02-25 19:10:21 6

skip broken piece of a loop but not exit the loop entirely

useful for loops like for i in $(cat list_of_servers); do ssh -q $i hostname; done if there is an unreachable server, you can just press ctrl + \ to skip that server and continue on with the loop
This is sample output - yours may be different.
7

ctrl + \

nottings · 2009-02-25 18:52:57 1
connect to X login screen via vnc

the $15 may change for you depending on your distro, etc...
This is sample output - yours may be different.
4

x11vnc -display :0 -auth $(ps -ef|awk '/xauth/ {print $15}'|head -1) -forever -bg &

nottings · 2009-02-19 18:55:54 1
read a file line by line and perform some operation on each line

see sample output Show Sample Output
This is sample output - yours may be different.
```
snottin@drifter /tmp $ cat > somefile.txt
line 1
line 2
line 3
snottin@drifter /tmp $ while read line; do echo "$(date),$(hostname),$line"; done < somefile.txt
Thu Feb 19 12:47:57 CST 2009,drifter,line 1
Thu Feb 19 12:47:57 CST 2009,drifter,line 2
Thu Feb 19 12:47:57 CST 2009,drifter,line 3
```
2

while read line; do echo "$(date),$(hostname),$line"; done < somefile.txt

nottings · 2009-02-19 18:48:12 1
use vi key bindings at the command line
This is sample output - yours may be different.
5

set -o vi

nottings · 2009-02-19 18:40:44 0
display contents of a file w/o any comments or blank lines
This is sample output - yours may be different.
4

egrep '^[^#]' some_file

nottings · 2009-02-19 17:35:52 9
open a seperate konsole tab and ssh to each of N servers (konsole 4.2+)

creates a new tab for each of N servers in listofservers.txt and ssh's to said servers then, try the "send to all sessions" feature of konsole to do the same work on all servers at the same time. BIG time saver, but be careful!
This is sample output - yours may be different.
4

for i in $(cat listofservers.txt); do konsole --new-tab -e ssh $i; done

nottings · 2009-02-19 16:32:36 0
Convert file type to unix utf-8

converts encoding of a file to unix utf-8 useful for data files that contain what would be usable ascii text but are encoded as mpeg or some other encoding that prevents you from doing common manipulations like 'sed' Show Sample Output
This is sample output - yours may be different.
```
[root@gaslight WAP_EMI_scans]# file datafile1.csv
datafile1.csv: MPEG ADTS, layer I, v1, 160 kBits, 32 kHz, Stereo
[root@gaslight WAP_EMI_scans]# ex datafile1.csv "+set ff=unix fileencoding=utf-8" "+x"
[root@gaslight WAP_EMI_scans]# file datafile1.csv
datafile1.csv: Unicode text, UTF-8
```
5

ex some_file "+set ff=unix fileencoding=utf-8" "+x"

nottings · 2009-02-19 16:23:21 1

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which program is this port belongs to ?

Sometimes you need to use a port that is already opened by some program , and you don't know who to "kill" for it to release - so, now you do !

a function to find the fastest DNS server

http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

Analyze awk fields

Breaks down and numbers each line and it's fields. This is really useful when you are going to parse something with awk but aren't sure exactly where to start.

Go up multiple levels of directories quickly and easily.

Change to your taste. Much quicker than having to add 'cd' every time. Add it to your .bashrc or .bash_profile.

Graphical tree of sub-directories with files

The command finds every item within the directory and edits the output so that subdirectories are and files are output much like the tree command

Securely stream (and save) a file from a remote server

Securely stream a file from a remote server (and save it locally). Useful if you're impatient and want to watch a movie immediately and download it at the same time without using extra bandwidth. This is an extension of snipertyler's idea. Note: This command uses an encrypted connection, unlike the original.

get xclip to own the clipboard contents

"Copying" things to the X clipboard doesn't normally create a copy. Rather the data to be 'copied' is referenced. This means that if the application that you 'copied' stuff from is closed, that data is lost. If the application that you 'copied' from is suspended with CTRL-Z, there could be some issues if you try to paste it into something. This command will create a copy of referenced data and have xclip be the provider of it, so you can then go ahead and close the app that contains the original information. Caveat: I'm not sure if this is binary-safe (though i would expect it to be), and don't know what would happen if you used it to clip a 20 meg gimp image. This technique becomes more convenient if you set it up as an action in a clipboard manager (eg klipper, parcellite). Some of these applets can take automatic action based on a variety of parameters, so you could probably just get it to always own the clipped data whenever data is clipped.

Displaying system temperature

Displaying system temperature your system . shellcode version @ http://inj3ct0r.com/exploits/12554

Generate MD5 of string and output only the hash checksum

Get acurate memory usage of a Process in MegaBytes

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