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clean up syntax and de-obfuscate perl script

This will create a new file with proper code formatting and all comments removed.
This is sample output - yours may be different.
0

perl -MO=Deparse filename.pl | perltidy > new.pl

kimmel · 2011-11-16 18:54:30 4
Print to standard output file paths different between SRC and DEST and replacing terms if needed

Script has to be modified to be executable! SRC and DEST a relative unix path, olds and news are the terms to be modified. Very helpful to sync source folders present in different SCM. If you dont like this one, just use rsync... Show Sample Output
This is sample output - yours may be different.
```
groovy -e "def txt=args[0]; def terms = args[1].split(','); terms.each { it -> def vals = it.split('-'); txt = txt.replaceAll(vals[0],vals[1]); } println txt;" "`diff -rq /Users/air/A /Users/air/B`" "Files:cp, and: , differ: "

-->

cp /Users/air/A/somefile /Users/air/B/somefile
cp /Users/air/A/someotherfile /Users/air/B/someotherfile
```
0

groovy -e "def output=args[0]; def terms = args[1].split(','); terms.each { it -> def keyValues = it.split(':'); output = output.replaceAll(keyValues[0],keyValues[1]); } println output;" "`diff -rq . SRC DEST`" "old1:new1,old2:new2"

airline · 2012-03-24 02:52:22 4
count line of code
This is sample output - yours may be different.
0

cloc --force-lang=yaml --match-f='\.url$' .

kev · 2012-05-14 06:36:17 4
get mysql full processlist from commadline
This is sample output - yours may be different.
0

watch 'mysql -e "show full processlist;"'

vchakoshy · 2012-07-16 10:45:49 8
Search for a string inside all files below current directory
This is sample output - yours may be different.
0

find . -type f -exec grep -Hn <pattern> {} \;

funkjedi · 2012-09-08 19:43:08 4
Create cookies to log in to website

Generate a Netscape cookies file to use with Python's mechanize.
This is sample output - yours may be different.
0

curl -L -d "uid=<username>&pwd=<password>" http://www.example.com -c cookies.txt

drwlrsn · 2012-11-10 19:08:45 4
Show numerical values for each of the 256 colors in bash for bold and normal fonts

Shows the ?rendering? for each of the 256 colours in both the bold and normal variant. Using seq is helpful to get even lines, passing $((COLUMNS*2)) to column sort-of-handles the nonprintable characters.
This is sample output - yours may be different.
0

for code in $(seq -w 0 255); do for attr in 0 1; do printf "%s-%03s %bTest%b\n" "${attr}" "${code}" "\e[${attr};38;05;${code}m" "\e[m"; done; done | column -c $((COLUMNS*2))

claudius · 2013-01-13 18:23:44 4
Ensure path permissions from '.' prior to root

`pwd` returns the current path `grep -o` prints each slash on new line perl generates the paths sequence: './.', './../.', ... `readlink` canonicalizes paths (it makes the things more transparent) `xargs -tn1` applies chmod for each of them. Each command applied is getting printed to STDERR. Show Sample Output
This is sample output - yours may be different.
```
chmod 755 /tmp/1/2/3 
chmod 755 /tmp/1/2 
chmod 755 /tmp/1 
chmod 755 /tmp 
```
0

pwd|grep -o '/'|perl -ne '$x.="./.";print`readlink -f $x`'|xargs -tn1 chmod 755

luke_skywalker · 2013-03-14 12:03:44 7
Print out the contents of a Git repository (useful for broken repositories)
This is sample output - yours may be different.
0

find .git/objects -type f -printf "%P\n" | sed s,/,, | while read object; do echo "=== $obj $(git cat-file -t $object) ==="; git cat-file -p $object; done

hamador · 2013-10-02 09:09:00 10
Show total cumulative memory usage of a process that spawns multiple instances of itself

This command will show the sum total of memory used in gigabytes by a program that spawns multiple instances of itself. Replace chrome with whatever program's memory usage you are investigating. This command is rather useless on software that only spawns a single instance of itself. Show Sample Output
This is sample output - yours may be different.
```
6.6
```
0

ps -eo pmem,comm | grep chrome | cut -d " " -f 2 | paste -sd+ | bc

Darkstar · 2014-01-03 15:33:16 11
show filenames in tail output with color

This shows the the filenames of tail output in color. Helpful if you have many log files to tail
This is sample output - yours may be different.
0

tail -f *.log | grep --color=always '|==>.+<=='

danimath · 2014-07-11 07:47:27 7
Remove spaces

Remove all spaces from command's output
This is sample output - yours may be different.
0

command | awk '{gsub(" ", "", $0); print}'

wbcmac2000 · 2015-02-25 01:16:06 15
Print file excluding comments and blank lines
This is sample output - yours may be different.
0

egrep -v '^$|^#' /etc/sysctl.conf

imjoseangel · 2017-04-17 20:23:09 24
Update obsolete CVS Root files

If your CVS server has moved, here's a way to update your CVS Root files throughout your code tree without checking out a new copy of your files.
This is sample output - yours may be different.
0

find cvsdir -name Root -exec sed -i 's/oldserver/newserver/' {} \;

mulad · 2009-02-19 04:31:13 5
Remove/replace newline characters.

Ever had a file with a list of numbers you wanted to add, use: cat file | sed ':a;N;$!ba;s/\n/+/g' | bc
This is sample output - yours may be different.
0

sed ':a;N;$!ba;s/\n/ /g'

cidiom · 2009-03-17 20:54:04 20
Create a symbolic link tree that shadows a directory structure

Extremely useful to maintain backups if you're using Dropbox. This mirrors the entire directory structure and places symlinks in each to the original file. Instead of copying over the data again to the ~/Dropbox folder creating a symbolic link tree is much more sensible in terms of space usage. This has to be supplemented by another script that removes dead symlinks in the Dropbox folder which point to files that have been moved/removed. find -L ./ -type l -delete And then removing empty directories find ./ -type d -exec rmdir 2>/dev/null {} \; **Actually after some finding I found lndir which creates symbolic trees but it wasn't in the Arch repos so.. ;)
This is sample output - yours may be different.
0

find /home/user/doc/ -type d -printf "mkdir -vp '/home/user/Dropbox%p'\n" -o -type f -printf "ln -vs '%p' '/home/user/Dropbox%p'\n" | sh

jnash · 2009-03-29 09:25:12 23
Record Alexa Traffic Stats of your Website

This will record the Alexa Traffic Stats to a file and run every 5 hours. -- www.fir3net.com --
This is sample output - yours may be different.
0

x=1 ; while [ $x -le 10 ] ; do lynx -dump http://www.alexa.com/siteinfo/http://[YOUR WEBSITE] | grep Global | sed 's/ \|Global\|\,//g' >> /var/log/alexa-stats.txt ; sleep 5h ; done &

felix001 · 2009-10-17 13:48:05 3
Get first Git commit hash

Can anyone make a shorter one? This doesn't work: git log --reverse -1 --format=%H Show Sample Output
This is sample output - yours may be different.
```
c7a4ef6756568cbb795481b82cebea72926a2ab5
```
0

git log --format=%H | tail -1

l0b0 · 2010-07-20 08:12:05 13
Find which service was used by which port number

Apply to almost linux distroes. Show Sample Output
This is sample output - yours may be different.
```
xuta@xuta-itim:~$ cat /etc/services  | egrep [[:blank:]]25/
smtp		25/tcp		mail
```
0

cat /etc/services | egrep [[:blank:]]<port_number>/

xutale · 2010-11-25 08:04:31 6
recursive command to find out all directories

An easy way to send all directories to a bash script, it makes it recursive
This is sample output - yours may be different.
0

find $DIR -exec bash method {} ";"

netzahdzc · 2011-03-28 02:41:02 3
Display GCC Predefined Macros

another one
This is sample output - yours may be different.
0

echo | gcc -dM -E -

Byung · 2011-05-09 09:59:24 3
Use binary notation to chmod a file.

I simply find binary notation more straightforward to use than octal in this case. Obviously it is overkill if you just 600 or 700 all of your files... Show Sample Output
This is sample output - yours may be different.
```
-rwxrwx-wx 1 nerd nerd 0 2011-11-16 23:29 foo
```
0

function right { bc <<< "obase=8;ibase=2;$1"; }; touch foo; chmod $(right 111111011) foo; ls -l foo

nerd · 2011-11-16 22:43:31 3
Export log to html file

similar to previous except this exports to a temporary file, opens that file with your default web browser, then deletes it.
This is sample output - yours may be different.
0

x="/tmp/auth.html";sudo cat /var/log/auth.log | logtool -o HTML >$x;xdg-open $x;rm $x

unixmonkey30696 · 2012-02-09 13:36:21 3
Burn a simple DVD-Video without menu using any given video file

This is the fastest way to burn a DVD-Video from the command line. Dependencies: libav-tools dvdauthor growisofs The first command: avconv -i input.avi -target pal-dvd dvd.mpg converts any given video file avconv can handle into MPEG2-PS (6 Mbit/s) with AC3 audio (448 kbit/s). If your distribution is not up to date, just use ffmpeg - the syntax is the same. Hint: If you want to create an NTSC DVD, type ntsc-dvd instead ;-) The second command: echo PAL > ~/.config/video_format sets PAL as your default video format. This is a workaround for an old dvdauthor bug. If you want NTSC, guess what? Type NTSC instead! The third command: dvdauthor -o dvd/ -t dvd.mpg creates .VOB files and adds them to the dvd/ folder. You don't have to create this folder yourself. You can add as many titles as you like, just keep in mind that there's a maximum of 4482 MiB (4.37 GiB) for normal DVDs. The fourth command: dvdauthor -o dvd/ -T finishes the DVD-Video. Now you can burn your DVD using growisofs: growisofs -Z /dev/dvd -dvd-video dvd/ Sources: manpages http://tuxicity.wordpress.com/2006/12/01/avi-to-dvd-with-ffmpeg-and-dvdauthor/
This is sample output - yours may be different.
0

avconv -i input.avi -target pal-dvd dvd.mpg && echo PAL > ~/.config/video_format && dvdauthor -o dvd/ -t dvd.mpg && dvdauthor -o dvd/ -T && growisofs -Z /dev/dvd -dvd-video dvd/

ppq · 2012-09-09 20:56:54 4
launch bash without using any letters
This is sample output - yours may be different.
0

${0##-}

gustavocastro · 2013-03-14 17:30:37 4
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Adding Color Escape Codes to global CC array for use by echo -e

I was looking for the fastest way to create a bunch of ansi escapes for use in echo -e commands throughout a lot of my shell scripts. This is what I came up with, and I actually stick that loop command in a function and then just call that at the beginning of my scripts to not clutter the environment with these escape codes, which can wreck havok on my terminal when I'm dumping the environment. More of a cool way to store escape ansi codes in an array. You can echo them like: $ echo -e "${CC[15]}This text is black on bright green background." I usually just use with a function: $ # setup_colors - Adds colors to array CC for global use $ # 30 - Black, 31 - Red, 32 - Green, 33 - Yellow, 34 - Blue, 35 - Magenta, 36 - Blue/Green, 37 - White, 30/42 - Black on Green '30\;42' $ function setup_colors(){ declare -ax CC; for i in `seq 0 7`;do ii=$(($i+7));CC[$i]="\033[1;3${i}m";CC[$ii]="\033[0;3${i}m";done;CC[15]="\033[30;42m"; export R='\033[0;00m';export X="\033[1;37m"; }; $ export -f setup_colors CC[15] has a background of bright green which is why it is separate. R resets everything, and X is my default font of bright white. $ CC[15]="\033[30;42m"; R=$'\033[0;00m'; X=$'\033[1;37m' Those are just my favorite colors that I often use in my scripts. You can test which colors by running $ for i in $(seq 0 $((${#CC[@]} - 1))); do echo -e "${CC[$i]}[$i]\n$R"; done See: http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html for more usage.

list block devices

Shows all block devices in a tree with descruptions of what they are.

Recall last argument of previous command

!$ recalls the last argument of the previous command. This is very useful when you have to operate several operations on the same file for example.

Copy your ssh public key to a server from a machine that doesn't have ssh-copy-id

This one is a bit more robust -- the remote machine may not have an .ssh directory, and it may not have an authorized_keys file, but if it does already, and you want to replace your ssh public key for some reason, this will work in that case as well, without duplicating the entry.

Convert an existing Git repo to a bare repo

If you want to turn a Git repo into the origin that folks can push to, you should make it a bare repository. See: http://stackoverflow.com/questions/2199897/git-convert-normal-to-bare-repository

Using numsum to sum a column of numbers.

if you, like me, do not have the numsum, this way can do the same.

Binary clock

Fun idea! This one adds seconds and keeps running on the same line. Perl's probably cheating though. :)

Run a ext4 file system check and badblocks scan with progress info

Nothing fancy, just a regular filesystem scan that calls the badblocks program and shows some progress info. The used options are: -c ? check for bad sectors with badblocks program -D ? optimize directories if possible -f ? force check, even if filesystem seems clean -t ? print timing stats (use -tt for more) -y ? assume answer ?yes? to all questions -C 0 ? print progress info to stdout /dev/sdxx ? the partition to check, (e.g. /dev/sda1 for first partition on first hard disk) NOTE: Never run fsck on a mounted partition!

memory usage

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