post: print usage to stderr and return 1 on bad options
commita79e7c463a998eb249b2c6d0d010e7540a329ce2
authoraabacchus <bvnfuller@gmail.com>
Sun, 22 May 2022 21:51:23 +0000 (22 22:51 +0100)
committerAli Gholami Rudi <ali@rudi.ir>
Fri, 27 May 2022 10:30:56 +0000 (27 15:00 +0430)
tree87830faecdd27b72d63626a52ac171a87c7fae31
parent5c912d084931b4aa91103718bc8d59c2c982d9ad
post: print usage to stderr and return 1 on bad options

so that if an incorrect option is given in a pipeline, the error message can be seen.
post.c