123456789101112131415161718192021222324252627282930313233343536373839 |
- # https://cuddly-octo-palm-tree.com/posts/2021-10-31-better-bash-functions/
- f() (
- # code
- var1=${1:-"default"}
-
- if [ "${var1}" == "default" ]; then
- #echo errors and warning messages to stderr 1>&2
- return 1 # error, outut undefined
- fi
- echo "StirngValueOnSTDOUT"
- return 0 # success, output defined
- )
- return=`f` && echo SUCCESS return value is $return || echo FAILURE no return
- echo
- return=`f FOO` && echo SUCCESS return value is $return || echo FAILURE no return
- echo
- if retval=f; then
- echo f with no argument succeeded
- else
- echo f with no argument failed
- fi
- if retval=`f BAR`; then
- echo f with an argument succeeded and retval is $retval
- else
- echo f with an argument failed
- fi
- if f BAR; then
- echo f with an argument succeeded, ignoring retval
- else
- echo f with an argument failed
- fi
|