#!/usr/bin/perl -w use strict; use Getopt::Std; my $width = 500; my $height = 500; getopts( 'w:h:' ); if( $opt_w ) { $width = $opt_w ; } if( $opt_h ) { $height = $opt_h ; } print "$height:$width\n"; #### Global symbol "$opt_w" requires explicit package name at ./adjust.pl line 14. #### #!/usr/bin/perl -w use strict; use Getopt::Std; my $width = 500; my $height = 500; my $opt_w; my $opt_h; getopts( 'w:h:' ); if( $opt_w ) { $width = $opt_w ; } if( $opt_h ) { $height = $opt_h ; } print "$width:$height\n"; #### $ ./my.pl -w 1000 -h 9 #### 500:500