permalink stackoverflow answers

Beneath all answers you'll see a link called "share". That's your permalink. For example, the permalink to this answer is http://meta.stackoverflow.com/a/25107/21960.

via How can you get the permalink for an answer to a question?

Mon Feb 4 23:15:38 PST 2013

prompt for input and case switch statement

case $doit in
  y|Y)
    echo "converting..."
    convert $1 -scale $3 $2
    ;;
  *)
    echo skip
    ;;
esac

via bash user input if

Mon Feb 4 23:12:30 PST 2013

arithmetic logic

if [ $width -gt $MAX_WIDTH -a $height -gt $MAX_HEIGHT ];
  # whatever
fi

via Introduction to if

Mon Feb 4 23:10:35 PST 2013

gather flags

while getopts u:d:p:f: option
do
  case "${option}"
  in
    u) USER=${OPTARG};;
    d) DATE=${OPTARG};;
    p) PRODUCT=${OPTARG};;
    f) FORMAT=$OPTARG;;
  esac
done

via How to pass arguments to a Bash-script

Sun Feb 3 20:25:33 PST 2013

print nth column of text

| awk '{ print $n }'

Mon Dec 31 13:42:59 PST 2012

make vim search non-greedy

Instead of .* use .\{-}.

:help non-greedy

via stack overflow

Mon May 21 14:14:54 PDT 2012

facebook, shhh

document.getElementsByClassName('ego_column')[0].style.display = 'none';

Mon May 21 12:11:57 PDT 2012

how to find the size of a file. duh!

du -h file_name

Wed May 9 20:55:49 PDT 2012

SSH login without password

cat .ssh/id_rsa.pub | ssh user@host 'cat >> ~/.ssh/authorized_keys'

via linuxproblem.org

src vs href

We use src for replaced elements while href for establishing a relationship between the referencing document and an external resource.

Stack Overflow: Difference between SRC and HREF