check if file is empty or not

Question

How do I check if a file is empty in a korn script

I want to test in my korn script if the output CSV file is empty or not and if it is not empty then it should give the count of values. Thanks.

Does this answer your question? [How to check if a file is empty in Bash?](https://stackoverflow.com/questions/9964823/how-to-check-if-a-file-is-empty-in-bash) — betontalpfa, Apr 08 '21 at 15:14

score 11 · Accepted Answer · answered Apr 09 '13 at 07:14

11

The test(1) program has a -s switch:

-s FILE
      FILE exists and has a size greater than zero

answered Apr 09 '13 at 07:14

cnicutar

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thank you!But this -s File name will not give the exact of count of records. – user2260271 Apr 09 '13 at 09:14
@user2260271 Yup, this only answers the question "find out if file is non empty". – cnicutar Apr 09 '13 at 09:16
Thanks...Actually i need the count for the records available in the file. – user2260271 Apr 09 '13 at 09:59
Not sure what you mean by count of values. Your other comment suggests that you're looking for number of records, in which case, you can try: `cat csv-file | wc -l`. – devnull Apr 09 '13 at 10:59
i want to check CSV file whether it is empty or not and if it is "not empty" then it should give the count of Records. Thanks. – user2260271 Apr 09 '13 at 11:40
How to remove the footer value also?in this function – user2260271 Apr 11 '13 at 10:31
How do I check if a csv file is empty or not without counting header and footer value. – user2260271 Apr 11 '13 at 10:48
@user2260271 It may be time to get some better tool for the job, like `python` or something that understands csv. – cnicutar Apr 11 '13 at 10:49

score -1 · Answer 2 · edited Dec 02 '13 at 11:08

-1

This is just another way of doing it, albeit a roundabout one:

if [ `ls -l <file> | awk '{print $5}'` -eq 0 ]
then
//condition for being empty
else
//condition for not being empty
fi

edited Dec 02 '13 at 11:08

Qantas 94 Heavy

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answered Dec 02 '13 at 10:49

Vels

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satish kumar Kuchoor · Answer 3 · 2015-04-10T18:14:38.057

-2

if [ ! -f manogna.txt ]
then
    echo "  Error: manogna.txt  does not exist  "
else
    echo " manogna.txt   exist " 
    echo " no of records in manogna.txt are `cat manogna.txt   | wc -l`"
fi

edited Apr 10 '15 at 18:14

answered Apr 10 '15 at 18:06

satish kumar Kuchoor

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check if file is empty or not

3 Answers3