DZone Snippets: bash code

Dock 2D/3D

masssi (Massimiliano) — Fri, 29 Aug 2008 10:59:15 GMT

// Switch Dock 2D / 3D



#!/bin/sh

CURRENT=`defaults read com.apple.dock no-glass`

case $CURRENT in

    0)

        OPTION='YES'

        ;;

    1) 

        OPTION='NO'

        ;;

    *)

        OPTION='YES'

        ;;

esac



defaults write com.apple.dock no-glass -boolean $OPTION

killall Dock

echo "Restarting dock..."

List the 10 most recent files

jrobertson (James Robertson) — Sun, 10 Aug 2008 14:13:15 GMT



 aimage_file = Dir.entries(".").select{|f| File.file? f }.sort_by { |f| File.mtime(f) }.reverse[0..9]

=> ["14_12_10GMT_1.jpg", "14_12_09GMT_1.jpg", "14_12_09GMT.jpg", "14_12_10GMT.jpg", "14_12_08GMT.jpg", "14_11_38GMT_1.jpg", "14_11_38GMT.jpg", "14_11_37GMT_1.jpg", "14_11_37GMT_2.jpg", "14_11_37GMT.jpg"]

References:
- Class: Dir [ruby-doc.org]
- Class: File [ruby-doc.org]

Bash prompt with git branch

hmans (Hendrik Mans) — Wed, 06 Aug 2008 15:15:46 GMT



export PS1='\[\033[00;32m\]\u\[\033[01m\]@\[\033[00;36m\]\h\[\033[01m\]:\[\033[00;35m\]\w\[\033[00m\]\[\033[01;33m\]`git branch 2>/dev/null|cut -f2 -d\* -s`\[\033[00m\]\$ '

Toggle hidden files in Mac OS X Finder

Aupajo (Pete) — Thu, 31 Jul 2008 02:00:25 GMT

Works in Leopard, should work in all versions of OS X.



#!/bin/bash



if [ `defaults read com.apple.finder AppleShowAllFiles` == 1 ]

then 

  echo "Hiding hidden files."

  defaults write com.apple.finder AppleShowAllFiles -bool false

else 

  echo "Showing hidden files."

  defaults write com.apple.finder AppleShowAllFiles -bool true

fi   

     

KillAll Finder

Get input from terminal with prompt, history, line editor

ptr128 (Mariusz) — Sun, 27 Jul 2008 19:48:14 GMT

Using this script you will be able to read user input using readline goodies but without need to manually program readline library. Just save it under e.g. /usr/local/bin/getline, and then call like:
getline {prompt} {historydir}.

for example:
getline "input> " "/tmp"

You can for example call this script from php using popen(). This way php doesn't have to include readline module, and you can do shell stuff not inside php, but using shell code, which is more natural and comfortable way to do it.



#!/bin/bash -f

history -r "$2/.getline_history"

LINE=""

read -re -p "$1" LINE

history -s "$LINE"

history -w "$2/.getline_history"

echo $LINE

Decompress several filetypes with a single script

zdenton (Zach Denton) — Fri, 18 Jul 2008 02:07:02 GMT

// Decompresses Z, gz, bz2, zip, rar, tar, and 7z with a single 'decompress' command



#!/bin/bash



# decompress - will decompress a file, regardless of compression type.



Z="compress -d"

gz="gunzip"

bz="bunzip2"

zip="unzip -qo"

rar="unrar x -id -y"

tar="tar xf"

7z="p7zip -d"



if [ $# -eq 0 ]; then

    echo "Usage: decompress file or files to decompress">&2

    exit 1

fi



for name

do

	if [ ! -f "$name" ] ; then

		echo "$0: file $name not found. Skipped." >&2

		continue

	fi



	if [ "$(echo $name | egrep '(\.Z$|\.gz$|\.bz2$|\.zip$|\.rar$|\.tar$|\.tgz$|\.7z$)')" = "" ] ; then

		echo "Skipped file ${name}: it's already decompressed." 

      		continue

	fi



	extension=${name##*.}



	case "$extension" in

		Z ) echo "Filetype is Z. Decompressing..."

		    $Z "$name"

		    ;;

		gz ) echo "Filetype is gz. Decompressing..."

		     $gz "$name"

		     ;;

		bz2 ) echo "Filetype is bz2. Decompressing..."

 		     $bz "$name"

		     ;;

		zip ) echo "Filetype is zip. Decompressing..."

		      $zip "$name"

		      ;;

		rar ) echo "Filetype is rar. Decompressing..."

		      $rar "$name"

		      ;;

		tar ) echo "Filetype is tar. Decompressing..."

              	      $tar "$name"

              	      ;;

		tgz ) echo "Filetype is tgz. Decompressing..."

              	      $tar "$name"

                     ;;

               7z ) echo "Filetype is 7z. Decompressing..."

                     $7z "$name"

	esac



done



exit 0

Inspect a website like a string in Ruby

ntk () — Wed, 09 Jul 2008 21:13:48 GMT

Put the following function into your ~/.bash_login (or alternatives).



unset -f inspect_url



function inspect_url() { 

   /usr/bin/curl -L -s --max-time 10 "${@}" | ruby -n -e 'p $_.to_s'

   return 0

}



inspect_url http://www.ruby-forum.com

Find ports used by applications on Mac OS X (i.e. netstat for os x)

nicwilliams (Dr Nic Williams) — Mon, 30 Jun 2008 00:06:33 GMT

netstat on os x doesn't do what you hope it does - show port numbers for applications.

Here's a snippet for your .bash_profile:



# replacement netstat cmd to find ports used by apps on OS X

alias netstat_osx="sudo lsof -i -P"

(thx Lachie Cox)

Find girls

zscott (Zak Scott) — Fri, 27 Jun 2008 21:40:18 GMT

// having trouble finding attractive women??



ls -a /girls | grep 'sexy'

Convert Canon RAW ( .CRW) to jpeg

sandos (John Bäckstrand) — Fri, 27 Jun 2008 07:01:38 GMT

This is adapted from http://www.howtofixcomputers.com/forums/digital-photo/my-humble-contribution-wrapper-script-dcraw-linux-4360.html to enable (I think) higher quality interpolation in dcraw and higher quality JPEGs.



DCRAW="dcraw -w -c "

while [ $# -ge 1 ]

do

OJPEG=$(echo $1| perl -pe 's/\.crw$//i' | tr 'A-Z' 'a-z')'.jpeg'

echo "${DCRAW} $1 | cjpeg > ${OJPEG}"

${DCRAW} -q 3 $1 | cjpeg -quality 95 > ${OJPEG} || echo " *PROBLEM*"

# transfer EXIF data from the original raw file

exiftool -overwrite_original -TagsFromFile "$1" "${OJPEG}" >/dev/null

# preserve timestamps as much as possible

# touch -r "$1" "${OJPEG}"

dcraw -z "${OJPEG}"

shift

done