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Full Discussion: Passing variable to Expression in back ticks.
Top Forums Shell Programming and Scripting Passing variable to Expression in back ticks. Post 302486661 by jisha on Sunday 9th of January 2011 10:44:56 PM
Old 01-09-2011
CPU & Memory Passing variable to Expression in back ticks.
Hi,

In my perl script I want to check whether *.csv files exist and take the count .
Below is the code:

Code:
$path = “/home/usr/jan/myfiles”
my $File_Count = `ls *.csv | wc -l `; # Checks in the current directory #Works fine if files exists.
my $File_Count = `ls $path/*.csv | wc -l `; # I need to Modify this to check in the $path directory

question:
1. First line of code throws error “ls: cannot access *.csv: No such file or directory” when there are no .csv files in the directory. This error msg is displayed on the screen. Can we hide this from dislplaying but I need to capture the output of this line as I need to do further checking based on this output.
2. Is there any way we can pass the $path to the second line?


Regards,
Js
Last edited by jisha; 01-10-2011 at 12:00 AM..
 

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