Quoth Chad Perrin on Wednesday, 27 October 2010:
> I know that in sh you can get the contents out of files specified as
> command line arguments:
>
> while read data; do
> echo $data
> done <$@
>
> I know you can also get the contents of files from pipes and redirects:
>
> while read data; do
> echo $data
> done
>
> In Perl, you can use a single construct to do both and, unlike the first
> sh example, it can also take multiple filenames as arguments and
> effectively concatenate their contents:
>
> while (<>) {
> print $_;
> }
>
> I'm not exactly an *expert* in sh, in part because when things start
> getting "interesting" while I'm writing shell scripts I tend to just use
> a more robust language like Perl. Please let me know if there's some way
> to use a simple idiom like the Perl example to get the same results in
> sh.
>
> --
> Chad Perrin [ original content licensed OWL: http://owl.apotheon.org ]Here's a way to do what you're wanting to do. Unfortunately, it isn't a generalized, single construct: #!/bin/sh if [ $# -ge 1 ];then exec cat $@ | $0 exit fi while read data; do echo $data done My lame attempts to generalize the first paragraph into an alias, function, or shell script have met with disappointment. -- Sterling (Chip) Camden | sterl...@camdensoftware.com | 2048D/3A978E4F http://camdensoftware.com | http://chipstips.com | http://chipsquips.com
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