Check for empty file in perl

Asked 2 years, 7 months ago. Active 2 years, 7 months ago. Viewed 4k times. Please check — ssr Add a comment. Active Oldest Votes. The relevant file test operators are: -z: check if the file is empty. So you need to attach the directory name yourself. Dave Cross Dave Cross Sign up or log in Sign up using Google. Sign up using Facebook.

Sign up using Email and Password. Post as a guest Name. If you believe the file could exist and want to know how many bytes the file contains which could be nothing but whitespace or a mixture of whitespace and other bytable information that takes up size , then the -s is good to use.

I would say that there is no reason to use the -s if you just want to test whether the file exists or not. The -s, I believe, takes calls whereas the -z just 1.

ICQ: RE: if statement to check if file is empty? If you want to check whether the file exists, you would use -e, wouldn't you? I could be wrong, though. But I always use -e to see if the file exists. True, -e returns true if the file exists. They all have their uses. Yes Grahf, -e is one of the trio test operators available. The -e does a TRUE 'file exist' seek and that is all it does. Then you wrap the -e exists statement in a conditional block so that the print statement or whatever you put there is only called if the file exists.

You could test for the opposite—that the file does not exist—by using the unless conditional:. Some other Perl file test operators are:. Using a file test can help you avoid errors or make you aware of an error that needs to be fixed. Actively scan device characteristics for identification. Use precise geolocation data.

Select personalised content. Create a personalised content profile. Measure ad performance. Condition to check whether configuration file is empty or not? Check if Queue empty or full in perl. I have a local linux machine in which the files are dumped by a remote ubuntu server. If the process in remote server has any problem then empty files are created in local machine. Is there any way using perl script to check if the empty files are being created and delete them and then run a shell Check if a text file is empty or not using ls -s.

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. Need to check for empty file in C shell script.

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.