I don't know how complex your program would be, but I usually just use,
$ cat file.txt
a
b
c
$ cat stdin.pl
#!/usr/bin/perl -l
while (<>) {
$_ = uc;
print;
}
$ perl stdin.pl file.txt
A
B
C
$ cat file.txt | perl stdin.pl
A
B
C
Or, just perl -lpe '$_=uc' if it's really that simple. Anyway, I don't see anything wrong with your code.
Update: Fixed missing -l (only the dash was there). Thanks almut :-)
Open source softwares? Share and enjoy. Make profit from them if you can. Yet, share and enjoy!
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|