[SOLVED] problem with assigning output of ls command to variable when ls produces error
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problem with assigning output of ls command to variable when ls produces error
Code:
count=`ls *.php -l | wc -l`
if [ "$count" -ne "0" ]; then
mv *.php ~/Desktop/PHP
echo "moved $count php files"
else
echo "$count php files found"
fi
With this code I am attempting to ensure a php file exists, then attempting to move it to another folder. My script has 40 or so extensions, this is one of many. My problem is this: if the current folder contains no php files i receive an error.
ls: cannot access *.php: No such file or directory
Typically I would use 2> /dev/null to handle output suppression but in this case it prevents the variable assignments. Any help would be appreciated.
This should not be a problem. Wc will count 0 lines before EOF, and redirecting error output should not affect the variable assignment. What shell are you using? I'm using bash here. BTW, you don't need -l with ls if all you are doing is counting lines of output.
A simpler way of doing this if you don't need to report how many files were moved would be:
Code:
if ! mv *.php ~/Desktop/PHP 2>/dev/null; then
echo "0 php files found"
fi
On second thought, my code doesn't do exactly what yours is trying to do, and there can be more reasons than files not found for mv to fail, such as lack of disk space.
This should not be a problem. Wc will count 0 lines before EOF, and redirecting error output should not affect the variable assignment. What shell are you using? I'm using bash here. BTW, you don't need -l with ls if all you are doing is counting lines of output.
A simpler way of doing this if you don't need to report how many files were moved would be:
Code:
if ! mv *.php ~/Desktop/PHP 2>/dev/null; then
echo "0 php files found"
fi
The first suggestion works well. Thanks for the replies.
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