The shell does it - normal return values are: zero == true anything else == false
Code:
#one way
if [[ -s filename ]] ; then
echo "filename exists and is > 0 bytes"
else
echo "filename does not exist or is zero length"
fi
# another way
if [[ -f filename ]] ; then
if [[ -s filename ]] ; then
echo "filename exists and is > zero"
else
echo "filename exists and == zero "
fi
else
echo "filename does not exist"
fi
Hi,
May I know how to check for empty file in Perl.
Iam missing something, somewhere.
#!/usr/bin/perl
my $open_dir = '/path/';
my $file;
my $ma = "abc_.*.\.psv\$"
opendir(VAR, $open_dir) or die "Can't open $oepn_dir: $!\n";
while( defined ($file = readdir VAR) ) #read all... (1 Reply)
Hi Masters.....
I have problem !!!
I need to check number of records in a file and if it is zero or file is empty i need to do some task.
if ; then
echo "File s empty"
else
echo "Not empty"
fi
so how to check this condition.
I used wc -l < filename.txt => 1 for zero records
same result... (1 Reply)
How do I check if a file is empty in a sh script
I want to test in my shell script if the output file is empty and if it is do one thing and if it isnt empty do another?
any ideas? (8 Replies)
I am running a C shell script. I have an output file from a previous step and I need to run "something" in the next step to check if the file is empty. If the file is empty, then the job script should finish EOJ. If the file is not empty then the job script should abend.
Please help
Thanks. (4 Replies)
Hello,
I want to make a script which says if a text file is empty or not.
I tried two ways of making it, but I have problems with both of them.
Now I think that the better way is the ls -s solution (considering that an empty text file has a 0 weight, because "cat file.txt" fails when file is... (4 Replies)
CMD=$(find "${Release_Container}" -iname "${Release_Name}"_Release.txt)
for i in `cat $CMD`
do
if ];then
cd ${Sandbox_dir}
CMD1=$(find "${Sandbox_dir}"/* -iname "${Release_Name}" -type d | awk -F/ '{print $(NF)}' | head -1 )
if ];then
echo -e "################### CHECKOUT START... (2 Replies)
Hello again!
I have some trouble with scripting in bash.
In the following script I read from a folder with the files
line0_Ux.xy
line1_Ux.xy
line2_Ux.xy
.
.
.
Some of the files are empty. For those I would like to print a "0" in list.
I think the problem with the code is that... (4 Replies)
Hi,
I have a shell script where I am trying to unzip bunch of files zip files one by one. But out of many zip files, if any one zip file is empty, the unzip command sends a non-zero return code and fails the script.
I am trying to see if I can get a success error code even if the script... (2 Replies)
Hi gurus ,
I have two files and i want to perform different action based on the condition if both or either is empty
If
then
Do something
elif
then
do something
elif
then
do something
else
do something
fi
I have tried the below bt its not... (4 Replies)
Hi All,
I need to check a file whether it exists and also whether it is empty or not. I have a code for this but it is not working as per my requirement. Can anyone pls suggest me on this.
function funcFLSanityCheck
{
if
then
echo "${varFLSentFileListPath}/${varFLSentFileName}... (7 Replies)
Discussion started by: Arun1992
7 Replies
LEARN ABOUT PHP
is_executable
IS_EXECUTABLE(3) 1 IS_EXECUTABLE(3)is_executable - Tells whether the filename is executableSYNOPSIS
bool is_executable (string $filename)
DESCRIPTION
Tells whether the filename is executable.
PARAMETERS
o $filename
- Path to the file.
RETURN VALUES
Returns TRUE if the filename exists and is executable, or FALSE on error.
EXAMPLES
Example #1
is_executable(3) example
<?php
$file = '/home/vincent/somefile.sh';
if (is_executable($file)) {
echo $file.' is executable';
} else {
echo $file.' is not executable';
}
?>
ERRORS /EXCEPTIONS
Upon failure, an E_WARNING is emitted.
NOTES
Note
The results of this function are cached. See clearstatcache(3) for more details.
Tip
As of PHP 5.0.0, this function can also be used with some URL wrappers. Refer to "Supported Protocols and Wrappers" to determine
which wrappers support stat(3) family of functionality.
SEE ALSO is_file(3), is_link(3).
PHP Documentation Group IS_EXECUTABLE(3)