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Commands by bashrc

Terminal - Commands by bashrc - 17 results

whatis $(compgen -c) 2>/dev/null | less

2013-02-01 00:03:33

User: bashrc

Functions: whatis

Up
Down

Do some learning...

compgen -c finds everything in your path.

find . -mount -type f -printf "%k %p\n" | sort -rg | cut -d \ -f 2- | xargs -I {} du -sh {} | less

2012-03-30 07:37:52

User: bashrc

Functions: cut du find sort xargs

Up
Down

Recursively find top 20 largest files (> 1MB) sort human readable format

from my bashrc ;)

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

10,30,50 * * * * ping -c1 -w3 192.168.0.14 >/dev/null

2012-02-06 14:54:15

User: bashrc

Functions: ping

Tags: ping host connection crontab

Up
Down

Send e-mail if host is 'dead' or not reachable

Cleaner with a mailto assignment in crontab (if the command fails you get an email):

MAILTO=admin@example.com

10,30,50 * * * * ping -q -c1 -w3 192.168.0.14 >/dev/null

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perl -i -ne 'print if $. == 3..5' <filename>

2012-01-27 23:15:10

User: bashrc

Functions: perl

Tags: bash vi

Up
Down

Remove a range of lines from a file

goo some things you search for < file

2011-09-09 20:30:40

User: bashrc

Up
Down

grep for a list of values and list matching values NOT matching lines each time they match

If you want to know which values from a list are used within a file.

Here's the bash function - called goo - for lack of a better name ;)

function goo() {

perl -e 'while (my $l = <STDIN>) { foreach (sort { length($b) <=> length($a) } @ARGV) { print "$_\n" x $l =~ s/$_//ig; } }' "$@"

}

perl -ne '$. == 4 && print && exit'

2011-09-05 21:52:16

User: bashrc

Functions: perl

Tags: Text Processing sed

-1

Up
Down

Print just line 4 from a textfile

Perl version - just for completeness sake ;)

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cat file.csv | perl -pe 'if($. == 1) {@h = split(/;/); $i = 1 ; map { $_ = $i; $i++ } @h; print join(" ;", @h) , "\n"} ; s/(^|;);/$1 ;/g' | column -ts\; | less -S

2011-08-31 12:52:02

User: bashrc

Functions: cat column less perl

Tags: column

Up
Down

format txt as table not joining empty columns adding header with column numbers

This version now adds a header with consecutive numbering.

column -tns: /etc/passwd

2011-08-31 10:47:04

User: bashrc

Functions: column

Tags: column

Up
Down

format txt as table not joining empty columns

-n switch keeps empty columns

If your distribution does not ship with a recent column version that supports -n you can use this alternative:

perl -pe 's/(^|;);/$1 ;/g' file.csv | column -ts\; | less -S

Change the delimiter to your liking.

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

perl -ne 'print "$1 " if /^Host (.+)$/' ~/.ssh/config

2011-08-21 14:51:20

User: bashrc

Functions: perl

Up
Down

ssh autocomplete based on ~/.ssh/config

I use this in my bashrc to expand hosts defined in ~/.ssh/config:

function _ssh_completion() {

perl -ne 'print "$1 " if /^Host (.+)$/' ~/.ssh/config

}

complete -W "$(_ssh_completion)" ssh

Here's a great article on how to setup your own ~/.ssh/config:

http://blogs.perl.org/users/smylers/2011/08/ssh-productivity-tips.html

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

perl -dwe 1

2011-05-05 20:28:03

User: bashrc

Functions: perl

Up
Down

Perl Command Line Interpreter

Can also just use the debug mode like this.

mysql --pager="less -niSFX"

2011-01-19 10:04:12

User: bashrc

Up
Down

Change MySQL Pager For Nicer Output

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

echo ${SSH_CLIENT%% *}

2011-01-11 10:58:35

User: bashrc

Functions: echo

Up
Down

Get the IP of the host your coming from when logged in remotely

Even faster without the need for cut... :)

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

readlink -e /bin/ls

2011-01-04 14:55:33

User: bashrc

Functions: readlink

Up
Down

Get the full path to a file

Part of coreutils - so needs no extra package...

mytop

2011-01-04 14:47:01

User: bashrc

Tags: mysql

Up
Down

Monitor the queries being run by MySQL

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cd $srcdir && find -type d -exec mkdir -p $dstdir/{} \;

2010-12-18 12:13:39

User: bashrc

Functions: cd find mkdir

Tags: copy

Up
Down

Copy structure

Clone directory structure without the files

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ls -F | grep '*$'

2010-12-18 01:11:18

User: bashrc

Functions: grep ls

Up
Down

List just the executable files (or directories) in current directory

A bit shorter ;)

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

netstat -atn | perl -0777 -ne '@ports = /tcp.*?\:(\d+)\s+/imsg ; for $port (32768..61000) {if(!grep(/^$port$/, @ports)) { print $port; last } }'

2010-12-14 20:44:37

User: bashrc

Functions: last netstat perl

Up
Down

find an unused unprivileged TCP port

Not really better - just different ;)

There's probably a really simple solution out there somewhere...