I am new to Unix shell scripting and would like some help with writing small script.
I have defined a following synopsis for my script:
install.sh [-h|-a path|[-k path][-f path][-d path][-e path]]
ie user can request some help (-h), install all to a specified place (-a path), or install one or more of a components (-k, -f, -d -e) to a appropriate paths. If there is no arguments, the help should be shown.
Thanks in advance.
You can use getopts to parse a command line with bash. Here is an example taken from Bash/Parsing command line arguments using getopts (obviously you'd have to adjust the options to your needs).
#!/bin/bash
#Set a default value for the $cell variable
cell="test"
#Check to see if at least one argument was specified
if [ $# -lt 1 ] ; then
echo "You must specify at least 1 argument."
exit 1
fi
#Process the arguments
while getopts c:hin: opt
do
case "$opt" in
c) cell=$OPTARG;;
h) usage;;
i) info="yes"
n) name=$OPTARG;;
\?) usage;;
esac
done
Related SO question How do I parse command line arguments in bash?
For more information search for getopts on this man page for bash.
