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reading default config file in a bash script

/ Published in: Bash
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  1. deftwitlogrc="~/.twitlog.rc"
  2.  
  3. #
  4. # Parse command line
  5. #
  6.  
  7. me=`basename $0 .sh`
  8. usage="Usage: $me [-c config-file] <message>  \n\nNOTE: config-file defaults to $deftwitlogrc"
  9.  
  10. while getopts ":c:" options; do
  11.   case $options in
  12.     c ) twitlogrc=$OPTARG;;
  13.     h ) echo -e $usage
  14.         exit 0;;
  15.     \? ) echo -e $usage
  16.          exit 1;;
  17.     * ) echo -e $usage
  18.           exit 1;;
  19.   esac
  20. done  
  21.  
  22. shift $((OPTIND - 1))
  23.  
  24. #
  25. # Try and read config file
  26. #
  27. if [ -z "$twitlogrc" ]
  28. then
  29.         source ${HOME}/.twitlog.rc
  30. else
  31.         source $twitlogrc
  32. fi
  33.  
  34. if [ $? -ne 0 ]
  35. then
  36.         echo "Cannot open config file"
  37.         echo
  38.         echo -e $usage
  39.  
  40.         exit 1
  41. fi

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