The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
e4crypt – ext4 file system encryption utility Synopsis e4crypt add_key -S [ -k keyring ] [-v] [-q] [ -p pad ] [ path … ] e4crypt new_session e4crypt get_policy path … e4crypt set_policy [ -p pad ] policy path … Description e4crypt performs encryption management for ext4 file systems. Commands e4crypt add_key [-vq] [-S salt…
e2undo – Replay an undo log for an ext2/ext3/ext4 file system Synopsis e2undo [ -f ] [ -h ] [ -n ] [ -o offset ] [ -v ] [ -z undo_file ] undo_log device Description e2undo will replay the undo log undo_log for an ext2/ext3/ext4 file system found on device. This can be used…
e2scrub_all – check all mounted ext[234] file systems for errors. Synopsys e2scrub_all [OPTION] Description Searches the system for all LVM logical volumes containing an ext2, ext3, or ext4 file system, and checks them for problems. The checking is performed by invoking the e2scrub tool, which will look for corruptions. Corrupt file systems will be tagged…
e2scrub – check the contents of a mounted ext[234] file system Synopsys e2scrub [OPTION] MOUNTPOINT | DEVICE Description e2scrub attempts to check (but not repair) all metadata in a mounted ext[234] file system if the file system resides on an LVM logical volume. The block device of the LVM logical volume can also be passed…
e2mmpstatus – Check MMP status of an ext4 file system Synopsis e2mmpstatus [-i] <filesystem> Options -i prints out the MMP information rather than check it. Description e2mmpstatus is used to check Multiple-Mount Protection (MMP) status of an ext4 file system with the mmp feature enabled. The specified file system can be a device name (e.g….
e2label – Change the label on an ext2/ext3/ext4 file system Synopsis e2label device [ volume-label ] Description e2label will display or change the volume label on the ext2, ext3, or ext4 file system located on device. If the optional argument volume-label is not present, e2label will simply display the current volume label. If the optional…
e2image – Save critical ext2/ext3/ext4 file system metadata to a file Synopsis e2image [-r|-Q [-af]] [ -b superblock ] [ -B blocksize ] [ -cnps ] [ -o src_offset ] [ -O dest_offset ] device image-file e2image -I device image-file Description The e2image program will save critical ext2, ext3, or ext4 file system metadata located…
e2fsck – check a Linux ext2/ext3/ext4 file system Synopsis e2fsck [ -pacnyrdfkvtDFV ] [ -b superblock ] [ -B blocksize ] [ -l|-L bad_blocks_file ] [ -C fd ] [ -j external-journal ] [ -E extended_options ] [ -z undo_file ] device Description e2fsck is used to check the ext2/ext3/ext4 family of file systems. For…
e2freefrag – report free space fragmentation information Synopsis e2freefrag [ -c chunk_kb ] [ -h ] filesys Description e2freefrag is used to report free space fragmentation on ext2/3/4 file systems. filesys is the file system device name (e.g. /dev/hdc1, /dev/md0). The e2freefrag program will scan the block bitmap information to check how many free blocks…
dumpseg – print segment information of NILFS2 Synopsis dumpseg [device] segment-number … dumpseg -h Description The dumpseg program is an analysis tool for on-disk logs of a NILFS2 file system found in device. It displays the configuration of every log stored in the segments specified by one or more segment-numbers. The term segment here means…
dumpexfat – dump exFAT file system Synopsis dumpexfat [ -s ] [ -u ] [ -f file ] [ -V ] device Description dumpexfat dumps details about exFAT file system including low-level info. All sizes are in bytes. Options Command line options available: -s Dump only info from super block. May be useful for heavily…
dumpe2fs – dump ext2/ext3/ext4 file system information Synopsis dumpe2fs [ -bfghixV ] [ -o superblock=superblock ] [ -o blocksize=blocksize ] device Description dumpe2fs prints the super block and blocks group information for the file system present on device. Note: When used with a mounted file system, the printed information may be old or inconsistent. Options…
DUMP_FTS – dump InfiniBand forwarding tables Synopsis dump_fts [options] [<startlid> [<endlid>]] Description dump_fts is similar to ibroute but dumps tables for every switch found in an ibnetdiscover scan of the subnet. The dump file format is compatible with loading into OpenSM using the -R file -U /path/to/dump-file syntax. Options -a, –all show all lids in…
dump – ext2/3/4 filesystem backup Synopsis dump [–level#] [-ackMnqSuv] [-A file] [-B records] [-b blocksize] [-d density] [-D file] [-e inode numbers] [-E file] [-f file] [-F script] [-h level] [-I nr errors] [-jcompression level] [-L label] [-Q file] [-s feet] [-T date] [-y] [-zcompression level] files-to-dump dump [-W | -w] Description Dump examines files…
dump.f2fs – retrieve directory and file entries from an F2FS-formated image Synopsis dump.f2fs [ -i inode number ] [ -s SIT range ] [ -a SSA range ] [ -b block address ] [ -d debugging-level ] device Description dump.f2fs is used to retrieve f2fs metadata (usually in a disk partition). device is the special…
dump-utmp – print an utmp file in human-readable format. Synopsis dump-utmp [-r|–reverse] [-R|–raw] [-n|–num recs] [-h|–help] [ files] Description dump-utmp filename prints a list of all logins. This list is usually written in /var/log/wtmp. All fields are separated by vertical line. Fields are: user name, tty, type, id, pid, hostaddr, host, time. Options -h, –help…
dump-acct – print an acct/pacct file in human-readable format Synopsis dump-acct [-r|–reverse] [-R|–raw] [-n|–num recs] [–byte-swap] [–format] [–ahz freq] [-h|–help] [files] Description The dump-acct command transforms the output file from the accton format to the human-readable format: one record per line. Each record consists of severald fields which are separated by character "|" (the meaning of concreate…
dummy-ups – Driver for multi-purpose UPS emulation Note This man page only documents the specific features of the dummy-ups driver. For information about the core driver, see nutupsdrv(8). Description This program is a multi-purpose UPS emulation tool. Its behavior depends on the running mode: Dummy Mode dummy-ups looks like a standard device driver to upsd(8)…
duende – run a child process as a daemon Description duende makes a given child process a daemon. The standard output and standard error of the child process is logged via syslog() with a priority of LOG_INFO. Usage duende child_process [ all subsequent arguments passed on to child ] Details When duende is invoked, it…
dspam_selinux – Security Enhanced Linux Policy for the dspam processes Description Security-Enhanced Linux secures the dspam processes via flexible mandatory access control. The dspam processes execute with the dspam_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier. For example: ps -eZ | grep…