truncate

truncate (coreutils package)

Set file to zero:

• truncate -s 0 /path/to/filename
• truncate -s 0 /var/lib/docker/containers/*/*-json.log
• echo "" > filename

Truncate to a size:

• truncate -s 500MB /swap.img

Related commands

• virt-resize
• touch
• split
• rm
• echo
• logrotate
• fallocate
• tr

See also

• Coreutils, tail, dirname, env, sleep, install, truncate
• file, File system, directory, touch, mkdir, ls, ln truncate, fallocate, split, stat, inode, File descriptor, superblock, block size (blockdev), fuser, lsof, scrub, chattr, ulimit (nofiles), cp, mv, file (command), mkfifo, chmod