hi
I'm not familiar with getopts, first time I use it and the man page was
confusing. It says "a colon following an option indicates it may take an
argument".
I understand this as: if I use the string "s:" then I can use "-s" or "-s
something" as it **may** take an argument.
But if you use "s:", getopts reports an error "-s requires argument".
I propose to modify that sentence (not sure for the s in requires).
Index: sh.1
===================================================================
RCS file: /data/cvs/src/bin/ksh/sh.1,v
retrieving revision 1.149
diff -u -p -r1.149 sh.1
--- sh.1 28 Sep 2018 18:32:39 -0000 1.149
+++ sh.1 29 Nov 2018 06:44:50 -0000
@@ -495,7 +495,7 @@ to the index of the next variable to be
The string
.Ar optstring
contains a list of acceptable options;
-a colon following an option indicates it may take an argument.
+a colon following an option indicates it requires an argument.
If an option not recognised by
.Ar optstring
is found,
Example to reproduce it:
#!/bin/sh
while getopts s:? args
do
case "$args" in
s) VALUE=${OPTARG} ;;
*) exit 0 ;;
esac
done
echo $VALUE
solene@t480 ~/notes/perso $ ./bug.sh -s
./bug.sh[9]: -`s' requires argument
solene@t480 ~/notes/perso $ ./bug.sh -s value
value
