self.code()

Add this to ~/.bash_profile, ~/.bashrc, or wherever you prefer. You can then recursively remove annoying .DS_Store files from a directory by executing the command rm_dss.

1

alias rm_dss='find . -name *.DS_Store -type f -exec rm {} \;'

Source: http://snippets.dzone.com/posts/show/4982

This function pipes a javascript file to a Python implementation of Douglas Crockford’s handy JSMin, a javascript minifier.

1
2
3
4
5
6
7
8
9
10
11
12
13

minify() {
  if [ -f $1 ]
  then
    MIN=${1%.[^.]*}.min.js
    cat $1 | python ~/path/to/jsmin.py > ${1%.[^.]*}.min.js
    BEFORE=`wc -c <$1`
    AFTER=`wc -c <$MIN`
    echo "$BEFORE $1"
    echo "$AFTER $MIN ($(echo "scale=2; 100*$AFTER/$BEFORE" | bc)%)"
  else
    echo "$1 not found"
  fi
}

It also prints the minified version’s character count as a percentage of the original’s:

$ minify prototype.js 

  126127 prototype.js
   93689 prototype.min.js (74.28%)

Disable:

$

sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist

Reenable:

$

sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist

Source: http://tech.karbassi.com/2007/11/06/leopard-turn-off-bonjour-mdnsresponder/

I wrote this bash function to print sequential lines starting from a random point in a text file. I use it to display a few lines of a song every time I open a new shell, but it’s general enough for many purposes.

1
2
3
4

lyrics() {
  S=$(( $(( RANDOM % $(( $(wc -l < $1)-1 )) )) + 1))
  sed -n "$S,$(($S + $(($2-1)) ))"p $1 | awk '{print "+ "$0}'
}

Add the function above to ~/.bash_login, ~/.bash_profile or ~/.bashrc, followed by this line calling it:

1

lyrics .my_lyrics 3

Arguments: .my_lyrics is the name of the file containing the text, and 3 is the number of sequential lines to print. Here’s an example of what it produces in a shell:

Last login: Mon Mar 16 12:01:03 on ttys000
+ well maybe you should just drink a lot less coffee
+ and never ever watch the ten o'clock news
+ maybe you should kiss someone nice, or lick a rock, or both
heather@macbook:~ $

From Allan Odgaard’s excellent Working With History in Bash:

1
2
3

export HISTCONTROL=erasedups
export HISTSIZE=10000
shopt -s histappend

Place in ~/.bash_login, ~/.bash_profile, or ~/.bashrc after changing lines 2 and 3:

1
2
3
4
5
6
7
8
9
10
11

my() {
  user="your_username";
  pass="your_password";
  if [ $# = 1 ]
  then
    mysql -u $user --password=$pass $1;
  else
    mysql -u $user --password=$pass --execute='show databases';
    mysql -u $user --password=$pass;
  fi
}

Before:

$

mysql -u [user] -p ([database])

Enter password:
mysql >

After:

$

my ([database])

mysql >