Ramprasad A Padmanabhan wrote:
I want to write a perl script like "gnu less".
My perl script accepts input on STDIN or filename(s) as arguments.
If both are missing it should print the error message. How do I do this
?
The pseudocode will be
----------
IF INPUT ON STDIN ;then
Process STDIN
ELSE IF ARGUMENT(S) is a file ;then
Process content of file(s)
ELSE
Show usage / help message
END IF
------------
Any ideas how this can be done in perl ?
if ( not @ARGV and -t STDIN ) {
die "No file found";
}
while ( <> ) {
process_files_or_stdin();
}
John
--
use Perl;
program
fulfillment
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