Commands by professoralex

Commands by professoralex (9)

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alias for etckeeper, to commit changes after moification of etc

ec commits changes to etckeeper must have etckeeper installed with bzr to use this place inside bashrc can be used from any directory to commit changes
This is sample output - yours may be different.
0

function ec() { ec_var="`pwd`" && cd /etc/ && sudo bzr commit -m "$@" && cd $ec_var; }

professoralex · 2009-05-14 04:34:26 2
alias for lsof -i -T -n

list what applications using what ports Show Sample Output
This is sample output - yours may be different.
```
[sudo] password for digi: 
COMMAND     PID        USER   FD   TYPE  DEVICE SIZE NODE NAME
... (output varies)
```
-2

alias lso="sudo lsof -i -T -n"

professoralex · 2009-05-14 04:01:05 0
aliases for apt-get

these are some aliases you can use in bashrc to shorten the amount of typing needed to use apt-get, also can be used as reference if you can't remember alot of commands or command parameter variations,etc... Please comment with more apt-get aliases if I missed any, thx Show Sample Output
This is sample output - yours may be different.
```
#all apt-get aliases (add to .bashrc or type in cmdline):
$ alias agi='sudo apt-get install' #packages
$ alias agu='sudo apt-get update'
$ alias ags='sudo apt-cache search' #string-in-package-name-or-descr
$ alias agsh='sudo apt-cache show' #string
$ alias agr='sudo apt-get remove' #packages
$ alias agd='sudo apt-get dist-upgrade'
$ alias agc='sudo apt-get clean'
$ alias agac='sudo apt-get autoclean'
```
-4

alias agi="sudo apt-get install" #package_names

professoralex · 2009-05-14 03:31:47 0
alias source .bashrc and nano .bashrc

alias for editing .bashrc and sourcing it with a quick command, very useful for quickly adding and modifying alias' and functions in bashrc, create lots of alias from commandlinefu very quickly, use nano vim or any other edit if you want, very useful if you have a barcode scanner and you want to run commands quickly with barcodes Show Sample Output
This is sample output - yours may be different.
```
usage:
$ nbrc
edit .bashrc
press ctrl-x,y,enter
$ sbrc
```
-19

alias sbrc="source ~/.bashrc" && alias nbrc="nano ~/.bashrc"

professoralex · 2009-05-13 02:41:37 5
kill process by name
This is sample output - yours may be different.
-4

pkill

professoralex · 2009-05-11 00:32:51 3
change mac address
This is sample output - yours may be different.
0

ifconfig eth0 hw ether 00:11:22:33:44:55

professoralex · 2009-05-11 00:24:42 1
dump 1KB of data from ram to file

Show Sample Output
This is sample output - yours may be different.
```
1+0 records in
1+0 records out
1024 bytes (1.0 kB) copied, 0.000986997 s, 1.0 MB/s

$ file file.dump
file.dump: data

$ strings file.dump 
ReQuQ
```
1

dd if=/dev/mem of=file.dump bs=1024 skip=0 count=1

professoralex · 2009-05-11 00:19:50 1
unalias previously aliased command

unalias a previously aliased command Show Sample Output
This is sample output - yours may be different.
```
$ alias testing="echo testing"
$ testing
testing

$ unalias testing
$ testing
bash: testing: command not found
```
-10

unalias

professoralex · 2009-05-11 00:03:20 1
prints message in given argument on on center of screen

function echox { echo `tput cup $(($(tput lines))) $(( ($(tput cols) - $(echo "${#1}"))/2 ))`"$1"`tput cup $(tput lines) $(( $(tput cols)-1 ))`; } echox prints given argument on bottom line center screen in terminal function echoxy { echo `tput cup $(($(tput lines)/2)) $(( ($(tput cols) - $(echo "${#1}"))/2))`"$1"`tput cup $(tput lines) $(( $(tput cols)-1 ))`; } exhoxy prints given argument center screen function echos { echo `tput cup $(($(tput lines)-2)) $(($(tput cols)-$(echo ${#1})))&&tput sc`"$1"`tput cup $(($(tput lines)-2)) 0 && tput rc`; } while [ 1 ]; do echos "`date`"; done echos prints date and time on second from last line (used as status message) you can easily use these functions by placing them in your .bashrc file, make sure to source your .bashrc once you do Show Sample Output
This is sample output - yours may be different.
```
$ echox "hello world"
                                  hello world
```
1

function echox { echo `tput cup $(($(tput lines))) $(( ($(tput cols) - $(echo "${#1}"))/2 ))`"$1"`tput cup $(tput lines) $(( $(tput cols)-1 ))`; }

professoralex · 2009-05-10 23:24:49 4

What's this?

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use vim to get colorful diff output

:q to quit

Mount SMB share with password containing special characters

If the password for the share your trying to mount contains special characters you can use URL escape characters. The above command uses an example as follows: username: user password: p@ss URL Encoded password: p%40ss All credit goes to Richard York: http://www.smilingsouls.net/Blog/20110526100731.html Also check out this URL Decoder/Encoder to convert your passwords. http://meyerweb.com/eric/tools/dencoder/

Find top 10 largest files in /var directory (subdirectories and hidden files included )

Should work even when very large files exist.

Multi line grep using sed and specifying open/close tags

Working with log files that contains variable length messages wrapped between open and close tags it may be useful to filter the messages upon a keyword. This works fine with GNU sed version 4.2 or higher, so pay attention to some unix distros (solaris, hp-ux, etc.). Linux should be ok.

Prints any IP out of a file

Symlink all files from a base directory to a target directory

Symlinks all files in the base directory to the target directory then lists all of the created symlinks.

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

Recursive find and replace file extension / suffix (mass rename files)

Find recursively all files in ~/Notes with the extension '.md' and pipe that via xargs to rename command, which will replace every '.md' to '.txt' in this example (existing files will not be overwritten).

return external ip

Get your ip address, hostname, ASN and geolocation information. If you want just one field as a text response you can also get that,eg curl ipinfo.io/ip

Get AWS temporary credentials ready to export based on a MFA virtual appliance

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