I have two programs. The first program creates a log file, same as display of the terminal. So I am using the below code in unix terminal, for get the log file creation. And it’s working fine.
# first.pl
open (STDOUT, "| tee -a $LOGFILE") or die "Teeing off: $!\n";
At the end of the program I call the second program (`perl second.pl $LOGFILE`) and I wish to get the user entered inputs only in $LOGFILE. ( No need to captured the terminal display). I am using the LOG file handler to append the user entered inputs. But I am getting the terminal display also. How to avid the terminal display in the log file.
Thanks,
Mani Muthu
Hi Monks
I got the solution. Below I place the sample code for that one.
The first file : I wish to captured the screen display in log file
# parent.pl
# Preserve the filehandler
open(OLDOUT, ">&STDOUT");
$LOGFILE="output.txt";
open LOG_FH, ">>$LOGFILE" ;
# disable perl buffering so that when you log messages on the screen t
+o the logfile ,
select LOG_FH; $| = 1;
select STDOUT; $| = 1;
# Open STDOUT to log messages to file ...
open (STDOUT, "| tee -a $LOGFILE") or die "Teeing off: $!\n";
print "\nEnter Parent Process Input : ";
$p_input1=<>; chomp ($p_input1);
print LOG_FH "\nYou Entered : $p_input1";
close (LOG_FH);
close (STDOUT);
## redirect the file handler
open(STDOUT, ">&OLDOUT");
## No need the screen output to the log file
system("perl child.pl $LOGFILE");
The second file : I wish to user entered inputs only in the log file
# child.pl
$LOGFILE=$ARGV[0];
open FOUT, ">>$LOGFILE" ;
print "\nEnter the child process input : ";
$c_input1=<STDIN>;
print FOUT "\nYou Entered Child Input : $c_input1";
close (FOUT);
-
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.