Commands using df sorted by votes

Commands using df (48)

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Given a file path, unplug the USB device on which the file is located (the file must be on an USB device !)

You have an external USB drive or key. Apply this command (using the file path of anything on your device) and it will simulate the unplug of this device. If you just want the port, just type : echo $(sudo lshw -businfo | grep -B 1 -m 1 $(df "/path/to/file" | tail -1 | awk '{print $1}' | cut -c 6-8) | head -n 1 | awk '{print $1}' | cut -c 5- | tr ":" "-") Show Sample Output
This is sample output - yours may be different.
```
alex@alex-G73Sw:~$ echo $(sudo lshw -businfo | grep -B 1 -m 1 $(df "/media/0AF2108209E826EE/test" | tail -1 | awk '{print $1}' | cut -c 6-8) | head -n 1 | awk '{print $1}' | cut -c 5- | tr ":" "-") | sudo tee /sys/bus/usb/drivers/usb/unbind
2-1.3
```
30

echo $(sudo lshw -businfo | grep -B 1 -m 1 $(df "/path/to/file" | tail -1 | awk '{print $1}' | cut -c 6-8) | head -n 1 | awk '{print $1}' | cut -c 5- | tr ":" "-") | sudo tee /sys/bus/usb/drivers/usb/unbind

tweet78 · 2014-04-06 12:06:29 19

-P uses the POSIX output format, which makes information on each file system always printed on exactly one line. "column -t" makes a table from the input. Show Sample Output

df -P | column -t

6bc98f7f · 2011-04-09 13:12:46 13

Silently ensures that a FS is mounted on the given mount point (checks if it's OK, otherwise unmount, create dir and mount)

In my example, the mount point is /media/mpdr1 and the FS is /dev/sdd1 /mountpoint-path = /media/mpdr1 filesystem=/dev/sdd1 Why this command ? Well, in fact, with some external devices I used to face some issues : during data transfer from the device to the internal drive, some errors occurred and the device was unmounted and remounted again in a different folder. In such situations, the command mountpoint gave a positive result even if the FS wasn't properly mounted, that's why I added the df part. And if the device is not properly mounted, the command tries to unmount, to create the folder (if it exists already it will also work) and finally mount the FS on the given mount point. Show Sample Output
This is sample output - yours may be different.
```
alex@alex-G73Sw:~$ (mountpoint -q "/media/mpdr1" && df /media/mpdr1/* > /dev/null 2>&1) || ((sudo umount "/media/mpdr1" > /dev/null 2>&1 || true) && (sudo mkdir "/media/mpdr1" > /dev/null 2>&1 || true) && sudo mount "/dev/sdd1" "/media/mpdr1")
alex@alex-G73Sw:~$ 
```
20

(mountpoint -q "/media/mpdr1" && df /media/mpdr1/* > /dev/null 2>&1) || ((sudo umount "/media/mpdr1" > /dev/null 2>&1 || true) && (sudo mkdir "/media/mpdr1" > /dev/null 2>&1 || true) && sudo mount "/dev/sdd1" "/media/mpdr1")

tweet78 · 2014-04-12 11:23:21 48
Show how old your linux OS installtion is

..not guaranteed to always be accurate but fun to see how old you Linux installation is based on the root partitions file system creation date. Show Sample Output
This is sample output - yours may be different.
```
Filesystem created:       Wed Aug  6 14:43:42 2008
```
12

sudo tune2fs -l $(df -h / |(read; awk '{print $1; exit}')) | grep -i created

thechile · 2013-08-08 15:18:09 17
Check the age of the filesystem

Very useful set of commands to know when your file system was created. Show Sample Output
This is sample output - yours may be different.
```
# df / | awk '{print $1}' | grep dev | xargs tune2fs -l | grep create
Filesystem created:       Fri Oct 24 03:46:36 2008
```
9

df / | awk '{print $1}' | grep dev | xargs tune2fs -l | grep create

Kaio · 2009-02-16 18:45:03 869
disk space email alert

put it in crontab to get an alert when / is over 89% utilization.
This is sample output - yours may be different.
4

[ $(df / | perl -nle '/([0-9]+)%/ && print $1') -gt 90 ] && df -hP | mutt -s "Disk Space Alert -- $(hostname)" admin@example.com

grokskookum · 2009-10-15 21:11:54 8
Convert df command to posix; uber GREPable

It is a pain grep-ing/sed-ing/awk-ing plain old df. POSIX it! Show Sample Output
This is sample output - yours may be different.
```
$ df -P
Filesystem         1024-blocks      Used Available Capacity Mounted on
/dev/mapper/VolGroup00-LogVol00  37219896   7215776  29626424      20% /
/dev/sda1               194442     13553    170850       8% /boot tmpfs
```
3

df -P

AmadeusZull · 2009-02-18 20:53:31 6
get partitions that are over 50% usage
This is sample output - yours may be different.
3

df -h |awk '{a=$5;gsub(/%/,"",a);if(a > 50){print $0}}'

kulldox · 2019-05-01 16:33:47 34
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
This is sample output - yours may be different.
```
/dev/sda2            151913824 136594552   7602452  95% /
```
2

df -l | grep -e "9.%" -e "100%"

dooblem · 2010-04-26 17:57:54 3

Continually monitor things

You can use this one-liner for a quick and dirty (more customizable) alternative to the watch command. The keys to making this work: everything exists in an infinite loop; the loop starts with a clear; the loop ends with a sleep. Enter whatever you'd like to keep an eye on in the middle. Show Sample Output

while (true); do clear; uname -n; echo ""; df -h /; echo ""; tail -5 /var/log/auth.log; echo ""; vmstat 1 5; sleep 15; done

roknir · 2010-08-23 04:37:58 7

df output, sorted by Use% and correctly maintaining header row

Show disk space info, grepping out the uninteresting ones beginning with ^none while we're at it. The main point of this submission is the way it maintains the header row with the command grouping, by removing it from the pipeline before it gets fed into the sort command. (I'm surprised sort doesn't have an option to skip a header row, actually..) It took me a while to work out how to do this, I thought of it as I was drifting off to sleep last night! Show Sample Output
This is sample output - yours may be different.
```
Filesystem            Size  Used Avail Use% Mounted on
/dev/sdb1             147G   64G   77G  46% /home
/dev/sdd1              15G  5.3G  9.7G  36% /media/PLAY16
/dev/sdc1             1.4T  403G  904G  31% /data
/dev/sda1             141G  6.3G  128G   5% /
```
2

df -h | grep -v ^none | ( read header ; echo "$header" ; sort -rn -k 5)

purpleturtle · 2011-03-16 14:25:45 14
df without line wrap on long FS name
This is sample output - yours may be different.
2

df -PH|column -t

bakhru · 2011-04-13 21:13:14 3
Test file system type before further commands execution

Exclude 400 client hosts with NFS auto-mounted home directories. Easily modified for inclusion in your scripts. Show Sample Output
This is sample output - yours may be different.
```
DIR=. ; FSTYPE=$(df -TP ${DIR} | grep -v Type | awk '{ print $2 }') ; echo "${FSTYPE}"
ext3
```
1

DIR=. ; FSTYPE=$(df -TP ${DIR} | grep -v Type | awk '{ print $2 }') ; echo "${FSTYPE}"

unixhome · 2009-12-22 14:01:50 3
View the current number of free/used inodes in a file system

tune2fs also provides the same information . But the information does not give the current usage , it gives the information when the file system was last mounted. http://www.zaman4linux.in/2010/10/using-up-all-the-free-inodes.html Show Sample Output
This is sample output - yours may be different.
```
$ df -i /home/
Filesystem            Inodes   IUsed   IFree    IUse% Mounted on
/dev/sda6             640848   15004  625844    3%  /home
```
1

df -i <partition>

bzaman · 2010-12-12 03:34:57 44
LVM2 Reduce

Just the commands for the lvreduce I keep forgetting.
This is sample output - yours may be different.
1

# umount /media/filesystem; e2fsck -f /dev/device ; resize2fs -p /dev/device 200G #actual newsize#;lvreduce --size 200G /dev/device; mount /media/filesystem; df -h /media/filesystem

bbelt16ag · 2011-09-14 08:52:02 5
Show total disk space on all partitions

show off how big your disks are Show Sample Output
This is sample output - yours may be different.
```
Filesystem                  Size  Used Avail Use% Mounted on
total                       7.5T  2.7T  4.9T  36% -
```
1

df -h --total | awk 'NR==1; END{print}'

PROJAK_SX · 2014-03-01 19:52:50 8
Show allocated disk space:
This is sample output - yours may be different.
1

df -klP -t xfs -t ext2 -t ext3 -t ext4 -t reiserfs | grep -oE ' [0-9]{1,}( +[0-9]{1,})+' | awk '{sum_used += $1} END {printf "%.0f GB\n", sum_used/1024/1024}'

wuseman1 · 2018-11-12 03:33:58 329
Show used disk space:
This is sample output - yours may be different.
1

df -klP -t xfs -t ext2 -t ext3 -t ext4 -t reiserfs | grep -oE ' [0-9]{1,}( +[0-9]{1,})+' | awk '{sum_used += $2} END {printf "%.0f GB\n", sum_used/1024/1024}'

wuseman1 · 2018-11-12 03:34:52 367
Show all local disk and UFS mounts on Solaris
This is sample output - yours may be different.
0

df -kFufs

mnikhil · 2009-02-07 18:33:03 10
Send Disk usage via email
This is sample output - yours may be different.
0

#!/bin/sh #du.sh i=`hostname -i` df -h > /tmp/space.txt echo "server $i " >> /tmp/space.txt uuencode /tmp/space.txt space.txt | mail -s "HDD usage $i" email@email.com

gg · 2009-04-10 15:30:54 4
Do a quick check on the harware specifications on a set of Linux (RedHat) boxes
This is sample output - yours may be different.
0

clear; for i in `cat thehosts` ; do ssh $i "cat uname -a ; /etc/redhat-release; cat /proc/cpuinfo | tail -n 25 | egrep '^processor|^model name' "; free ; df -h ;done

dapf73 · 2009-05-21 16:44:23 4
Display the space used for all your mounted logical volume (LV)
This is sample output - yours may be different.
0

df -kh /dev/vg0*/lv*

marousan · 2010-02-03 13:37:30 4
find the device when you only know the mount point

No need for grep | awk. -P on df will force the mount point to be on the same line as the device
This is sample output - yours may be different.
0

df -P | awk '$6=="/media/KINGSTON" {print $1}'

linuts · 2011-01-21 00:32:00 4
to make any command run even if sytem gets shut down
This is sample output - yours may be different.
0

nohup df -k | sort -rn 12

sasmitasofi · 2011-03-25 04:24:37 3
Find out the installation time of a linux system (when installed in a ext2/3/4 file system)

Find out the earliest installation time of a linux system by getting the / filesystem creation time. This example is only valid the os is installed on an ext2/3/4 filesystem.
This is sample output - yours may be different.
0

tune2fs -l $(df -P / | awk 'NR==2 {print $1}') | sed -n 's/^.*created: *//p'

forcefsck · 2012-05-31 12:12:35 3
1 2 >

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Remove \r (carriage return) in a file

reset hosed terminal

put an unpacked .deb package back together

If any changes have been made to the package while it was unpacked (ie, conffiles files in /etc modi‐fied), the new package will inherit the changes. This way you can make it easy to copy packages from one computer to another, or to recreate packages that are installed on your system, but no longer available elsewhere. Note: dpkg-repack will place the created package in the current directory.

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

Transfer SSH public key to another machine in one step

This command sequence allows simple setup of (gasp!) password-less SSH logins. Be careful, as if you already have an SSH keypair in your ~/.ssh directory on the local machine, there is a possibility ssh-keygen may overwrite them. ssh-copy-id copies the public key to the remote host and appends it to the remote account's ~/.ssh/authorized_keys file. When trying ssh, if you used no passphrase for your key, the remote shell appears soon after invoking ssh user@host.

Decrypt passwords from Google Chrome and Chromium.

Read this before you down voting and comment that it is not working -> Wont work on latest versions ~75> since database file is locked and has to be decrypted. This is useful if you have an old hdd with a chrome installation and want to decrypt your old passwords fast.

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Delete all files found in directory A from directory B

This command is useful if you accidentally untar or unzip an archive in a directory and you want to automatically remove the files. Just untar the files again in a subdirectory and then run the above command e.g. $ for file in ~/Desktop/temp/*; do rm ~/Desktop/`basename $file`; done

repeat a command every one second

Short method of "while x=0; do foo ; sleep 1 ; done"

Remove duplicate rows of an un-sorted file based on a single column

$F[0] filters using first word. $F[1] - 2nd, and so on.

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Commands using df (48)

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