Open Source Support and Consultancy
When copy and pasting into vi or vim, you can often end up with badly formatted text. This is often referred to as “the staircase effect”. It’s easily prevented by entering :set paste before you paste, when you have finished turn it off again with :set nopaste.
You can change to the previous working directory in BASH by using the command:
cd -
This is a simple alternative to using getopts to parse parameters in a BASH shell script which makes use of the powerful parameter substitution functions in BASH. It should be sufficient for most scripts:
until [[ ! "$*" ]]; do
if [[ ${1:0:2} = '--' ]]; then
PAIR=${1:2}
PARAMETER=`echo ${PAIR%=*} | tr [:lower:] [:upper:]`
eval P_$PARAMETER=${PAIR##*=}
fi
shift
done
The script processes parameters in the format --name=value or --flag.
So, executing: ./example.sh --number=123 --show
Will result in the variable $P_NUMBER being set to “123″ and the variable $P_SHOW evaluating to true as it is set, albeit to a empty value.