what command is used to create or modify multiple files with specified file size in linux-CodePudding

command 'touch "file{1..10}".txt' creates 10 files file1.txt, file2.txt .... etc. How can we also create multiple file with specific file size in this form.

what I tried: fallocate -l 10M file{1..10}.txt

Output

fallocate: unexpected number of arguments

CodePudding user response：

According to the manual page, fallocate expects a single file name only.

You can use a loop:

for f in file{1..10}.txt
do
    fallocate -l 10M "$f"
done

or as a single line

for f in file{1..10}.txt; do fallocate -l 10M "$f"; done

CodePudding user response：

You could use truncate to extend the size of a file to a specific size

truncate -s 10M file{1..10}.txt