File

Linux Kernel modes for file I/O: buffered and direct. (See also: kswapd and Jens Axboe)

• Basic operating commands: cp, mv, rm, touch
• truncate, fallocate, ln
• join
• Information: stat, wc
• Manipulate file content: tr, awk, sed
• Editors: vim, emacs
• cat, col, tail, more, less
• grep, ack, ag
• diff

file file.img
file.img: DOS/MBR boot sector; partition 1 : ID=0xc, active, start-CHS (0x0,0,2), end-CHS (0x41,4,4), startsector 1, 1044480 sectors; partition 2 : ID=0x83, start-CHS (0x41,4,5), end-CHS (0x3e7,35,61), startsector 1044481, 31457280 sectors

file your_pem_file.pem
your_pem_file.pem PEM RSA private key

file private_key_file
private_key_file: OpenSSH private key

Related terms

• File operations: cp, mv, rm, ln
• directory
• ulimit: ulimit -n 8192
• line
• file (command)
• dd

See also

• cat, tac, more, less, tail, mtail, echo, stdin, tr, column, paste, truncate, logrotate, xzcat pv, progress, sort, ncat, virt-cat, awk, join, col, fold, tee, sponge, nfs-cat, journalctl, ccat, icat, EOF, lolcat
• 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
• File systems: ext4, XFS, ZFS, btrfs, wipefs, findfs, HDFS, overlay, aufs, virt-filesystems, Windows: (FAT, NTFS, ReFS), GPFS, squashfs, Ecryptfs, Encfs, FUSE, VMFS, Comparison of distributed file systems, Userspace filesystem, Resize filesystem size