Commands by ioggstream

Commands by ioggstream (27)

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See KeepAlive counters on tcp connections

See connection's tcp timers Show Sample Output
This is sample output - yours may be different.
```
tcp        0      0 192.168.10.117:45979       192.168.1.1:80         ESTABLISHED keepalive (25.96/0/0)
tcp        0      0 192.168.10.117:37418       192.168.0.5:993            ESTABLISHED off (0.00/0/0)
```
8

netstat -town

ioggstream · 2012-10-08 13:10:04 44
Show all configured ipv4

Short list of all ip. Shows even the newly supported multiple ip address on the same interface (see eth1). For ipv6 use -6 Show Sample Output
This is sample output - yours may be different.
```
1: lo    inet 127.0.0.1/8 scope host lo
2: eth0    inet 193.168.0.111/24 brd 193.168.0.255 scope global eth0
3: eth1    inet 172.23.0.1/24 scope global eth1
3: eth1    inet 172.23.0.2/24 scope global secondary eth1
4: virbr0    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
```
4

ip -o -4 a s

ioggstream · 2012-09-19 10:59:05 7
Dump 389ds schema

Dump 389ds schema, putting "\n " on one line with perl. You have to specify the objectclasses, attributetypes operational attributes too, otherwise they won't be dumped!
This is sample output - yours may be different.
-2

ldapsearch -xLLL -b "cn=schema" "(objectclass=*)" \ \* objectclasses attributetypes | perl -p0e 's/\n //g'

ioggstream · 2012-04-04 13:31:31 5
Comment current line

This should work with different locales. Another post reports Show Sample Output
This is sample output - yours may be different.
```
#ls LONG_PATH_YOU_DONT_REMEMBER
```
6

<ESC> #

ioggstream · 2011-09-13 17:01:44 63
Uptime in minute

Get info directly from /proc/uptime
This is sample output - yours may be different.
-1

awk '{print $0/60;}' /proc/uptime

ioggstream · 2011-08-31 10:41:21 18
ldapsearch -x -s base namingContexts -LLL
This is sample output - yours may be different.
-3

list the naming contexts of a directory server (no need to search in config files)

ioggstream · 2011-05-26 15:27:44 4
Find the process you are looking for minus the grepped one

faster ;) but your idea is really cool
This is sample output - yours may be different.
6

ps -ef | grep c\\ommand

ioggstream · 2011-01-04 11:43:14 5
Look up a unicode character by name

No need for further filedes or substitution for splitting. Simply use read a b
This is sample output - yours may be different.
1

grep -i "$*" /usr/lib/perl5/Unicode/CharName.pm | while read a b; do /usr/bin/printf "\u$a\tU+%s\t%s\n" "$b"; done

ioggstream · 2011-01-04 11:30:16 7
count of down available ips

avoid wc overload ;)
This is sample output - yours may be different.
1

nmap -v -sP 192.168.10.0/24 | grep -c down

ioggstream · 2011-01-04 11:20:27 5
send a circular

don't need echo :P
This is sample output - yours may be different.
20

wall <<< "Broadcast This"

ioggstream · 2010-12-29 11:07:46 51
count how many cat processes are running
This is sample output - yours may be different.
0

pgrep -c cat

ioggstream · 2010-09-24 22:42:12 4
Indent all the files in a project using emacs

use -iname \*[.ch] instead of -iname \*.c -o -iname \*.h
This is sample output - yours may be different.
3

find -iname \*.[ch] -exec emacs -nw -q {} --eval "(progn (mark-whole-buffer) (indent-region (point-min) (point-max) nil) (save-buffer))" --kill \;

ioggstream · 2010-09-10 12:24:58 5
processes per user counter

use Linux ;) Show Sample Output
This is sample output - yours may be different.
```
82
```
1

pgrep -cu ioggstream

ioggstream · 2010-05-21 10:53:57 5
diff two svn repos ignoring spaces,tabs and svnfiles
This is sample output - yours may be different.
2

diff -wubBEr -x .svn dirA dirB

ioggstream · 2010-05-21 10:47:02 6
lotto generator

note the xargs at the end
This is sample output - yours may be different.
5

shuf -i 1-49 | head -n6 | sort -n| xargs

ioggstream · 2009-10-22 12:54:08 93
Compare an archive with filesystem

and you quickly know the files you changed Show Sample Output
This is sample output - yours may be different.
```
horde-webmail-1.2.3/imp/config/servers.php: Mod time differs
horde-webmail-1.2.3/imp/config/servers.php: Size differs
horde-webmail-1.2.3/lib/Horde/RPC/PhpSoap.php: Mod time differs
horde-webmail-1.2.3/lib/Horde/RPC/PhpSoap.php: Size differs
```
3

tar dfz horde-webmail-1.2.3.tar.gz

ioggstream · 2009-08-24 14:19:58 3
Sum columns from CSV column $COL
This is sample output - yours may be different.
5

perl -ne 'split /,/ ; $a+= $_[3]; END {print $a."\n";}' -f ./file.csv

ioggstream · 2009-08-07 09:35:52 3
Create more threads with less stack space

default stack size is 10M. This makes your multithread app filling rapidly your memory. on my PC I was able to create only 300thread with default stack size. Lower the default stack size to the one effectively used by your threads, let you create more. ex. putting 64k I was able to create more than 10.000threads. Obviously ...your thread shouldn't need more than 64k ram!!!
This is sample output - yours may be different.
1

ulimit -s 64

ioggstream · 2009-08-06 10:40:25 5
modify (mozldap) with proxy authentication and no other controls
This is sample output - yours may be different.
0

ldapmodify -Y "dn:uid=rob,dc=example.com" -g -R -J 2.16.840.1.113730.3.4.16 ...

ioggstream · 2009-08-06 10:33:05 3
count how many times a string appears in a (source code) tree

grep -o puts each occurrence in a separate line
This is sample output - yours may be different.
9

$ grep -or string path/ | wc -l

ioggstream · 2009-07-16 12:50:59 7
A bit of privacy in .bash_history

Don't track in history commands starting with whitespace. Moreover ignore duplicates from history. To be set in .bashrc ex. $ export HISTCONTROL=ignoreboth $ echo antani $ history|grep -c antani
This is sample output - yours may be different.
5

export HISTCONTROL=ignoreboth

ioggstream · 2009-07-15 16:05:03 3
Fast grepping (avoiding UTF overhead)

greps using only ascii, skipping the overhead of matching UTF chars. Some stats: $ export LANG=C; time grep -c Quit /var/log/mysqld.log 7432 real 0m0.191s user 0m0.112s sys 0m0.079s $ export LANG=en_US.UTF-8; time grep -c Quit /var/log/mysqld.log 7432 real 0m13.462s user 0m9.485s sys 0m3.977s Try strace-ing grep with and without LANG=C
This is sample output - yours may be different.
0

export LANG=C; grep string longBigFile.log

ioggstream · 2009-07-14 12:48:02 9
Colorize matching string without skipping others

this is useful to highlight only some code without losing other lines (eg. software, logs, scripts)
This is sample output - yours may be different.
4

egrep --color=auto 'usb|' /var/log/messages

ioggstream · 2009-07-08 15:20:31 8
Alternative size (human readable) of files and directories (biggest last)

using mb it's still readable;) a symbol variation $ du -ms {,.[^.]}* | sort -nk1 Show Sample Output
This is sample output - yours may be different.
```
186     Foto
213     .mozilla
260     .eclipse
295     .kde
301     Desktop
```
3

du -ms * .[^.]*| sort -nk1

ioggstream · 2009-07-01 13:38:13 8
Recursive when needed

avoid rm to be recursive until you complete the command: put the -rf at the end!
This is sample output - yours may be different.
-3

rm strangedirs -rf

ioggstream · 2009-06-30 15:10:31 15
1 2 >

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Force wrap all text to 80 columns in Vim

This is assuming that you're editing some file that has not been wrapped at 80 columns, and you want it to be wrapped. While in Vim, enter ex mode, and set the textwidth to 80 columns: $ :set textwidth=80 Then, press: $ gg to get to the top of the file, and: $ gqG to wrap every line from the top to the bottom of the file at 80 characters. Of course, this will lose any indentation blocks you've setup if typing up some source code, or doing type setting. You can make modifications to this command as needed, as 'gq' is the formatting command you want, then you could send the formatting to a specific line in the file, rather than to the end of the file. $ gq49G Will apply the format from your current cursor location to the 49th row. And so on.

Create a new file

Rename all .jpeg and .JPG files to .jpg

Remote screenshot

Say if you're logged into a remote system via ssh and this system has an x window system, but yet you still want a screen shot of what's going on graphically. This will do it for you. :-)

coloured tail

tail with coloured output with the help of perl - need more colours? here is a colour table: http://www.tuxify.de/?p=23

Check if the LHC has destroyed the world

This says if the LHC has destroyed the world. Run it in a loop to monitor the state of Earth. Might not work reliable, if the world has actually been destroyed.

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

Type strait into a file from the terminal.

Takes input from the connected terminal and dumps it to the specified file. Stop writing and close file with control + D or the end of line character. Useful for copying+pasting large blobs of text over SSH to a new machine.

Create several copies of a file

Copy a file to a range of other files.

FizzBuzz in one line of Bash

The (in)famous "FizzBuzz" programming challenge, answered in a single line of Bash code. The "|column" part at the end merely formats the output a bit, so if "column" is not installed on your machine you can simply omit that part. Without "|column", the solution only uses 75 characters. The version below is expanded to multiple lines, with comments added. for i in {1..100} # Use i to loop from "1" to "100", inclusive. do ((i % 3)) && # If i is not divisible by 3... x= || # ...blank out x (yes, "x= " does that). Otherwise,... x=Fizz # ...set x to the string "Fizz". ((i % 5)) || # If i is not divisible by 5, skip (there's no "&&")... x+=Buzz # ...Otherwise, append (not set) the string "Buzz" to x. echo ${x:-$i} # Print x unless it is blanked out. Otherwise, print i. done | column # Wrap output into columns (not part of the test).

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