adjustscript

#adjustscript inserts a suitable default definition of a configuration
#option into a script. Input is excepected on stdin, output is sent to stdout.
#
# 'adjuscript VAR good' will change a line looking like this:
#
#     defaultVAR="anything"
#
# (where anything is anything) into
#
#     defaultVAR="good"
#

[ $# = 2 ] || {
  echo >&2 "Usage: adjustscript <varible> <default>"
  exit 1
}

sed "s%default$1=\"[^\"]*\"%default$1=\"$2\"%"