Re^2: no reaction on string replace

Hi, ok I was bit early ecouraged. the line perl -pi.bak -e "s/test/replace/g;" filename.txt works as DOS command. But when I try to squeez it in my skript he needs an operator before the file path. So

 
#!/usr/bin/perl -w
perl -pi.bak -e "s/test/replace/g;" C:/user/Desktop/filename.txt
[download]

is not working. Can you help me out, again? Thank you!

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Re^3: no reaction on string replace by Laurent_R (Canon) on Sep 11, 2013 at 21:26 UTC
Yeah, on the DOS or UNIX command line, the "-pi.bak -e" options have the effect of considerably simplifying the syntax for modifying a text file. If you want to write a real script, it is slightly more complicated, those simplifications no longer apply. Within a Perl script, you would need to do something like this; `#!/usr/bin/perl; use strict; use warnings; my $file_in = shift; open my $FH, "<", $file_in or die "cannot open $file_in $!"; while (<$FH>) { s/test/replace/g; print; }` [download] The above might still be considered simplistic, it is just giving an idea. Please don't hesitate to ask if you need further information.	[reply] [d/l]

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Re^3: no reaction on string replace
by Laurent_R (Canon) on Sep 11, 2013 at 21:26 UTC

Yeah, on the DOS or UNIX command line, the "-pi.bak -e" options have the effect of considerably simplifying the syntax for modifying a text file.

If you want to write a real script, it is slightly more complicated, those simplifications no longer apply.

Within a Perl script, you would need to do something like this;

#!/usr/bin/perl;
use strict;
use warnings;

my $file_in = shift;
open my $FH, "<", $file_in or die "cannot open $file_in $!";
while (<$FH>) {
     s/test/replace/g;
     print;
}
[download]

The above might still be considered simplistic, it is just giving an idea. Please don't hesitate to ask if you need further information.

[reply]
[d/l]