Commands by jlaunay

Commands by jlaunay (16)

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list all available disks and disk partitions
This is sample output - yours may be different.
-3

sed 's/#.*//' /etc/fstab | column -t

jlaunay · 2012-08-17 12:56:31 4
detect partitions
This is sample output - yours may be different.
0

sudo file -bs /dev/sda | sed -e 's/.*partition 1$.*$ code offset.*/partition 1\1/g' -e 's/$.$;/\1\n/g'

jlaunay · 2012-08-17 12:54:05 6
Better git diff, word delimited and colorized

Define a git alias then git dcolor
This is sample output - yours may be different.
3

git config alias.dcolor "diff --color-words"

jlaunay · 2012-08-17 12:07:25 4
Use vim automation to create a colorized html file
This is sample output - yours may be different.
5

file=<filename>;vim ${file} -e -s -c 'runtime! syntax/syntax.vim' -c 'runtime! syntax/2html.vim' -c "w ${file}.html" -c 'q!' -c 'q!' > /dev/null

jlaunay · 2012-08-04 11:46:40 6
dmesg with colored human-readable dates

Use sed to color the output of a human-readable dmesg output
This is sample output - yours may be different.
21

dmesg -T|sed -e 's|$^.*'`date +%Y`']$$.*$|\x1b[0;34m\1\x1b[0m - \2|g'

jlaunay · 2012-07-31 22:21:07 43
Get your current Public IP
This is sample output - yours may be different.
3

dig myip.opendns.com @Resolver1.opendns.com +short

jlaunay · 2012-07-21 01:18:18 4
du and sort to find the biggest directories in defined filesystem

This command give a human readable result without messing up the sorting.
This is sample output - yours may be different.
1

for i in G M K; do du -hx /var/ | grep [0-9]$i | sort -nr -k 1; done | less

jlaunay · 2012-06-26 22:57:17 7
Copies files from a directory to another, overwriting only existing files with same name

As cp is often an alias to cp -i you can use \cp (or cp full path /bin/cp) to use the real cp command instead of its alias
This is sample output - yours may be different.
-1

cp -rf srcdir/* destdir

jlaunay · 2012-06-25 13:01:03 3
exec chmod to subfiles

Using xargs is usually much quicker as it does not have to execute chmod for every file
This is sample output - yours may be different.
-2

find . -type f -print0 | xargs -0 chmod a-x

jlaunay · 2012-06-11 07:28:30 6
Displaying wireless signal on screen in realtime.
This is sample output - yours may be different.
-2

watch -n 1 "awk 'NR==3 {print \"Signal strength = \" \$3 \"00 %\"}''' /proc/net/wireless"

jlaunay · 2012-06-07 11:00:56 9
Automatically find and re-attach to a detached screen session

-RR option is used to resume the first appropriate detached screen session
This is sample output - yours may be different.
2

screen -RR

jlaunay · 2012-03-01 15:27:44 7
what model of computer I'm using?
This is sample output - yours may be different.
0

sudo dmidecode -s system-product-name

jlaunay · 2012-02-08 11:28:46 4
before writing a new script

or add this line to your ~/.vimrc if using vim
This is sample output - yours may be different.
0

:autocmd BufNewFile *.sh,*.bash 0put =\"#!/bin/bash\<nl># -*- coding: UTF8 -*-\<nl>\<nl>\"|$

jlaunay · 2012-02-06 08:28:05 27
Remove comments from files

as suggest in frans coment : '/^#[^!].*/d' -> remove if line begin with # except shebang #!/bin/bash 's/$.*[^!]$#.*[^}]/\1/' -> remove inline comments except shebang and ${variable#}
This is sample output - yours may be different.
0

sed -i -e '/^#[^!].*/d' -e 's/$.*[^!]$#.*[^}]/\1/' <filename>

jlaunay · 2012-01-31 02:45:56 8
Remove a range of lines from a file
This is sample output - yours may be different.
1

sed -i <start>,<end>d <filename>

jlaunay · 2012-01-30 16:11:40 4
copy with progress bar - rsync

a : to keep files permissions --no-whole file : use rsync?s delta-transfer algorithm --inplace : writes the updated data directly to the destination file optionnal -> add --remove-source-files to mv instead of cp
This is sample output - yours may be different.
0

rsync -aP --no-whole-file --inplace

jlaunay · 2012-01-29 18:39:31 6

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Advanced python tracing

Trace python statement execution and syscalls invoked during that simultaneously

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"

List all installed PERL modules by CPAN

This command will give you the detailed information about the installed perl modules i.e. installed path, Link type, version, files etc.

Google Translate

substitute "example" with desired string; tl = target language (en, fr, de, hu, ...); you can leave sl parameter as-is (autodetection works fine)

Display all shell functions set in the current shell environment

Uses the shell builtin `declare` with the '-f' flag to output only functions to grep out only the function names. You can use it as an alias or function like so: alias shfunctions="builtin declare -f | command grep --color=never -E '^[a-zA-Z_]+\ '" shfunctions () { builtin declare -f | command grep --color=never -E '^[a-zA-Z_]+\ '; }

left-right mouse buttons (left-handed)

Print a list of the 30 last modified mp3s sorted by last first

Show File System Hierarchy

Curious about differences between /bin, /usr/bin, and /usr/local/bin? What should be in the /sbin dir? Try this command to find out. Tested against Red Hat & OS X

Display any tcp connections to apache

Sometimes apache will get stuck in an established state where you can't get a list of the connecting IP's from mod_status... not a good thing when you need to ban an abusive ip.

Delete all empty lines from a file with vim

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