Commands tagged partition (26)

  • Show all detected mountable Drives/Partitions/BlockDevices

    Yields entries in the form of "/dev/hda1" etc. Use this if you are on a new system and don't know how the storage hardware (ide, sata, scsi, usb - with ever changing descriptors) is connected and which partitions are available. Far better than using "fdisk -l" on guessed device descriptors. Show Sample Output


    13
    hwinfo --block --short
    Schneckentreiber · 2009-04-24 11:13:31 11
  • Show the UUID of a filesystem or partition

    Shows the UUID of the given partition (here /dev/sda7). Doesn't need to be root. Show Sample Output


    9
    blkid /dev/sda7
    lineak · 2010-09-05 12:20:45 7
  • Mount a partition from within a complete disk dump

    Suppose you made a backup of your hard disk with dd: dd if=/dev/sda of=/mnt/disk/backup.img This command enables you to mount a partition from inside this image, so you can access your files directly. Substitute PARTITION=1 with the number of the partition you want to mount (returned from sfdisk -d yourfile.img). Show Sample Output


    8
    INFILE=/path/to/your/backup.img; MOUNTPT=/mnt/foo; PARTITION=1; mount "$INFILE" "$MOUNTPT" -o loop,offset=$[ `/sbin/sfdisk -d "$INFILE" | grep "start=" | head -n $PARTITION | tail -n1 | sed 's/.*start=[ ]*//' | sed 's/,.*//'` * 512 ]
    Alanceil · 2009-03-06 21:29:13 11
  • Display disk partition sizes


    8
    lsblk -o name,size
    justsomeguy · 2022-03-04 04:29:47 954
  • See size of partitions as human readable

    See size of partitions as human readable and get extra informations about hdd and partitions Show Sample Output


    5
    parted /dev/sda print
    mesuutt · 2012-06-05 09:11:06 4
  • Mount a partition from within a complete disk dump

    Instead of calculating the offset and providing an offset option to mount, let lomount do the job for you by just providing the partition number you would like to loop mount.


    4
    lomount -diskimage /path/to/your/backup.img -partition 1 /mnt/foo
    olorin · 2009-07-22 11:32:52 16
  • Mount partition from image (without offset mount)


    4
    losetup /dev/loop0 harddrive.img; kpartx -a -v /dev/loop0; mount /dev/mapper/loop0p1 /mountpoint/
    oernii3 · 2010-10-30 11:52:11 8
  • detect partitions

    Shows all block devices in a tree with descruptions of what they are.


    4
    lsblk -o NAME,TYPE,FSTYPE,LABEL,SIZE,MODEL,MOUNTPOINT
    BasketCase · 2012-09-12 15:30:25 5
  • Display disk partition sizes

    It is the same but more faster real 0m0,007s user 0m0,011s sys 0m0,000s with my solution real 0m0,038s user 0m0,044s sys 0m0,000s with your solution :) Show Sample Output


    3
    lsblk | grep -v part | awk '{print $1 "\t" $4}'
    gecco · 2022-01-11 13:31:04 307
  • copy partition table from /dev/sda to /dev/sdb


    2
    sfdisk -d /dev/sda | sed 's/sda/sdb/g' | sfdisk /dev/sdb
    kobayashison · 2009-12-22 23:35:30 5
  • Report full partitions from a cron

    Reports all local partitions having more than 90% usage. Just add it in a crontab and you'll get a mail when a disk is full. (sending mail to the root user must work for that) Show Sample Output


    2
    df -l | grep -e "9.%" -e "100%"
    dooblem · 2010-04-26 17:57:54 4
  • Recover deleted Binary files

    The above command assumes the lost data is on /dev/sda and you previously issued the following command to mount _another_ disk or partition (/dev/sdb1) on /recovery sudo mount /dev/sdb1 /recovery If you don't do this, the data could be overwrited! foremost is a very powerful carving tool. By default foremost recovers all known file types. If you want to reduce the amount of files that are recovered you can specify the file type you are looking for. Read the man page to know the available file types. i.e to recover JPEG pictures append to foremost the switch -tjpg


    2
    sudo foremost -i /dev/sda -o /recovery
    vlan7 · 2010-08-19 22:27:41 8
  • Remount an already-mounted filesystem without unmounting it

    Necessary for fsck for example. The remount functionality follows the standard way how the mount command works with options from fstab. It means the mount command doesn't read fstab (or mtab) only when a device and dir are fully specified. After this call all old mount options are replaced and arbitrary stuff from fstab is ignored, except the loop= option which is internally generated and maintained by the mount command. It does not change device or mount point.


    2
    mount -o remount,ro /dev/foo /
    vlan7 · 2010-10-30 03:51:53 7
  • detect partitions

    `blkid` is an interface to libuuid - it can read Device Mapper, EVMS, LVM, MD, and regular block devices. -c /dev/null - Do not use cached output from /etc/blkid.tab or /etc/blkid/blkid.tab (RHEL) -i - Display I/O Limits (aka I/O topology) information (not available in RHEL) -p - Low-level superblock probing mode (not available in RHEL) Show Sample Output


    2
    blkid -c /dev/null
    mhs · 2012-09-12 13:34:41 8
  • Find partition name using mount point

    lsblk | grep mountpoint Show Sample Output


    2
    lsblk | grep <mountpoint>
    totti · 2014-02-05 09:41:00 9
  • Display disk partition sizes

    Use lsbk (list block) and jq (to manipulate a JSON on the command line) to display partition information: Show Sample Output


    2
    lsblk --json | jq -c '.blockdevices[]|[.name,.size]'
    mikhail · 2021-12-22 22:31:07 350
  • copy partition table from /dev/sda to /dev/sdb


    1
    sfdisk -d /dev/sda | sfdisk /dev/sdb
    wincus · 2010-02-03 14:49:07 5
  • Check if you partition are aligned

    To get most of you HDD/SSD driver you need to make sure you partition are aligned, if not the speed penalty can be up to 50% slower! this simple one liner will check to see if each partition start sector is divided by 512 you need to change sda with your driver if you find the one of your partitions is not aligned use gparted to move the start sector of the partition to be divided of 512 Show Sample Output


    1
    fdisk -l /dev/sda | grep -E sda[0-9]+ | sed s/*// | awk '{printf ("%s %f ",$1,$2/512); if($2%512){ print "BAD" }else {print "Good"} }' | column -t
    The_IceMan_Blog · 2012-05-18 08:34:36 6
  • Show the UUID of a filesystem or partition

    Show the UUID-based alternate device names of ZEVO-related partitions on Darwin/OS X. Adapted from the lines by dbrady at http://zevo.getgreenbytes.com/forum/viewtopic.php?p=700#p700 and following the disk device naming scheme at http://zevo.getgreenbytes.com/wiki/pmwiki.php?n=Site.DiskDeviceNames Show Sample Output


    1
    ls /dev/disk* | xargs -n 1 -t sudo zdb -l | grep GPTE_
    grahamperrin · 2012-10-06 20:19:45 6
  • Mount file system using back-up superblock

    Found on http://www.cyberciti.biz/faq/linux-find-alternative-superblocks/


    1
    mount -o sb=98304 /dev/sda5 /mnt/data5
    rugina · 2013-06-25 08:50:44 11
  • create ext4 filesystem with big count of inodes

    XX is your device partition number like /dev/sdc1 . to see how many inodes your partition have type: df --inodes (or df -i) Default formatting with ext4 would create small inode count for the new partition if you need big count of inodes is the fstype news the correct one. in debian you can see which fstype exists as template in: vim /etc/mke2fs.conf if you format default ext for a partition size with 1TB you would get 1 Million inodes (not enough for backupStorages) but if you format with fstype news you would get hunderd of millions of inodes for the partition. you have tune /etc/sysctl.conf also with following sysconfig parameters fs.file-max = XXX fs.nr_open = XXX where XXX is the count of max inodes for whole system


    1
    mkfs.ext4 -T news /dev/sdcXX
    aysadk · 2019-07-02 13:31:23 39
  • Partition a new disk as all one partition tagged as LINUX_NATIVE

    Creates a single primary partition starting at sector 0 and extending to the end of the disk. Use with care.


    0
    echo "0,,L" | sfdisk /dev/sdX
    twobitsprite · 2012-04-09 18:36:24 7
  • fsarchiver - probe disks and partitions

    Another alternative to blkid, lsblk, file -s, cat /proc/paritions, fdisk -l, etc.. Show Sample Output


    0
    fsarchvier probe simple
    0xFF · 2013-04-28 10:16:18 7
  • List partition superblocks


    0
    sudo dumpe2fs /dev/sda1 | grep superblock
    rugina · 2013-06-25 08:48:49 185
  • detect partitions

    List all disks and all of their partitions on OS X. http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man8/diskutil.8.html Show Sample Output


    -1
    diskutil list
    grahamperrin · 2012-10-06 21:18:27 7
  •  1 2 > 

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

Function to split a string into an array

For a $FILE, extracts the path, filename, filename without extension and extension.
Useful for use in other scripts for renaming, testing for extensions, etc.

Display which distro is installed

Sort the size usage of a directory tree by gigabytes, kilobytes, megabytes, then bytes.
Probably only works with GNU du and modern perls.

Are there any words in the English language that use at least half of the alphabet without repeating any letters?
This is the most straightforward approach: first regexp limits dictionary file to words with thirteen or more characters, second regexp discards any words that have a letter repeated. (Bonus challenge: Try doing it in a single regexp!)

Url Encode
This one uses hex conversion to do the converting and is in shell/sed only (should probably still use the python/perl version).

Search and play youtube videos directly to terminal (no X needed)
Same as other command, however uses youtube-dl internal search (thanks to qoxxxx mentioning this) It does however seem to be a little buggy and youtube-dl crashes sometimes. ## pyt 'Stairway to heaven - Led Zeppelin' pyt 'brain damage - Pink Floyd' No web browser or even X needed. Just a cli and internet connection! mplayer is pauseable and can skip ahead This may break if youtube changes their search html.

Split File in parts
Split File in 19 MB big parts, putting parts together again via cat Nameforpartaa Nameforpartab Nameforpartac >> File

Find the real procesor speed when you use CPU scaling [cpuspeed]
We don't use CPU scaling, but just in case you do, there is something interesting to note. If you look at the /proc/cpuinfo, the speed listed is current running speed of the processors and not the real speed of the chip.

Create a mirror of a local folder, on a remote server
Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: