Commands using sudo sorted by votes

Commands using sudo (537)

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Change your timezone
This is sample output - yours may be different.
2

sudo cp /usr/share/zoneinfo/Europe/Paris /etc/localtime

egeoffray · 2013-03-14 11:53:09 2174

Install Linux Kernel Headers on Debian-based systems

Install the Linux kernel headers for currently running kernel version on Debian-based systems via apt-get Show Sample Output

sudo apt-get install linux-headers-`uname -r`

farazyashar · 2013-04-18 03:18:26 9

Install Restricted Multimedia Codecs in Ubuntu 14.04

Install the unrestricted version of libavcodec . It will keep away from any issues or missing codecs in video editors or transcoders. Install unrestricted version of libavcodec by the command.
This is sample output - yours may be different.
2

sudo apt-get install libavcodec-extra

unixmonkey57489 · 2014-06-03 16:28:22 9
Clone perms and owner group from one file to another

Copy both perms and owner group from one file to another.
This is sample output - yours may be different.
2

for i in chmod chown; do sudo "$i" --reference=/home/user/copyfromfile /tmp/targetfile; done

zlemini · 2014-08-28 15:08:32 8
Null a file with sudo
This is sample output - yours may be different.
2

sudo bash -c "> /var/log/httpd/access_log"

zlemini · 2014-10-02 15:39:47 12
Remove all old kernels

http://askubuntu.com/questions/89710/how-do-i-free-up-more-space-in-boot
This is sample output - yours may be different.
2

sudo apt-get purge $(dpkg -l linux-{image,headers}-"[0-9]*" | awk '/ii/{print $2}' | grep -ve "$(uname -r | sed -r 's/-[a-z]+//')")

funkjedi · 2015-03-15 15:57:19 9
Rolling upgrades via aptitude

This has been my "sysupgrade" alias since ca. 2006, first used on Debian Sid, then Sabayon, and it still does its duty on Mint nowadays without breaking stuff.
This is sample output - yours may be different.
2

sudo sh -c "aptitude update; aptitude -DrVWZ full-upgrade; aptitude autoclean; exit"

lordtoran · 2015-09-28 23:48:05 10
Get the Volume labels all bitlocker volumes had before being encrypted

Get information of volume labels of bitlocker volumes, even if they are encrypted and locked (no access to filesystem, no password provided). Note that the volume labels can have spaces, but only if you name then before encryption. Renaming a bitlocker partition after being encrypted does not have the same effect as doing it before. Show Sample Output
This is sample output - yours may be different.
```
BitLocker Volume labels:
/dev/nvme0n1p3 -> "OS_Install"
/dev/sda1 -> "DATA"
/dev/sdb1 -> "MY PEN"
```
2

sudo echo "BitLocker Volume labels:" && sudo dislocker-find | xargs -I{} sh -c 'echo -n "{} ->+ " ; sudo dislocker-metadata -V {} | grep string' | sed 's/+.*string://' | sed "s/'[^ ]* /\"/g" | sed 's/\ [^ ]*$/"/'

bugmenot · 2018-04-29 01:00:11 156
Capture FTP Credentials and Commands
This is sample output - yours may be different.
2

sudo tcpdump -nn -v port ftp or ftp-data

wuseman1 · 2019-02-03 05:14:56 32
Extract HTTP Passwords in POST Requests
This is sample output - yours may be different.
2

sudo tcpdump -s 0 -A -n -l | egrep -i "POST /|pwd=|passwd=|password=|Host:"

wuseman1 · 2019-02-03 05:15:28 901
Use QEMU to create a hardware dual-boot without rebooting

After downloading an ISO image, assuming you have QEMU installed, it’s possible to boot an ISO image in a virtual machine and then install that ISO from within the virtual machine directly to a physical drive, bypassing the need to reboot. Simply pass the ISO image as the -cdrom parameter, followed by “format=raw,file=/dev/sdb” (replace /dev/sdb with the drive you want to install to) as the hard drive parameter (making absolutely certain to specify the raw format, of course). Once you boot into the ISO image with QEMU, just run the installer as if it were a virtual machine — it’ll just use the physical device as an install target. After that, you’ll be able to seamlessly boot multiple distros (or even other operating systems) at once.
This is sample output - yours may be different.
2

sudo qemu-system-x86_64 -bios /usr/share/ovmf/x64/OVMF.fd -accel kvm -boot d -cdrom ubuntu-21.10-desktop-amd64.iso -drive format=raw,file=/dev/sdb -m 4096

realkstrawn93 · 2021-11-04 22:50:57 683
macOS: Save disk space by moving apps to external drives

Because Mac app bundles contain everything in one place, it makes running them from anywhere, including from a device such as a USB flash drive or external HDD, possible. So if your Mac has a mere 256GB of storage (as mine does), you can free up large quantities of disk space by storing apps like, say, Xcode on external devices.
This is sample output - yours may be different.
2

sudo mv /Applications/foo /Volumes/bar/Applications/foo && sudo ln -s /Volumes/bar/Applications/foo /Applications/foo

realkstrawn93 · 2022-01-20 18:03:36 353
Disassemble all ACPI tables on your system

The fact that Linux exposes the ACPI tables to the user via sysfs makes them a gold mine of valuable hardware information for low-level developers. Looping through each of them and disassembling them all makes them even more valuable.
This is sample output - yours may be different.
2

for i in /sys/firmware/acpi/tables/*; do sudo iasl -p $PWD/$(echo $i | cut -d\/ -f6) $i && sudo chown $USER $(echo $i | cut -d\/ -f6); done

realkstrawn93 · 2023-04-16 05:33:51 547
Sudoers: bypass all password prompts

If you as the sole user of a computer at home only don’t like needing to repeatedly type a password each time you run a command, using ‘NOPASSWD’ in sudoers for your specific username is for you.
This is sample output - yours may be different.
2

echo "$USER ALL=(ALL:ALL) NOPASSWD: ALL" | sudo tee -a /etc/sudoers

realkstrawn93 · 2023-08-10 22:19:18 162
List open sockets protocol/address/port/state/PID/program name
This is sample output - yours may be different.
1

sudo netstat -punta

zgomot · 2009-02-05 22:30:24 17
apt-get via sudo

An apt-get wrapper function which will run the command via sudo, but will run it normally if you're only downloading source files. This was a bit of an excuse to show off the framework of cmd && echo true || echo false ...but as you can see, you must be careful about what is in the "true" block to make sure it executes without error, otherwise the "false" block will be executed. To allow the apt-get return code to pass through, you need to use a more normal if/else block: apt-get () { if [ "$1" = source ]; then command apt-get "$@"; else sudo apt-get "$@"; fi }
This is sample output - yours may be different.
1

apt-get () { [ "$1" = source ] && (command apt-get "$@";true) || sudo apt-get "$@" }

mulad · 2009-02-19 04:17:24 6
Remove apps with style: nuke it from orbit

You can't stand programs x, y, and z. Remove all trace of their existence by adding this function to your config. It will remove the cruft, the settings, and such and such. This function doesn't even give a damn about you trying to remove programs that don't exist: it'll just for loop to the next one on your hit list. Show Sample Output
This is sample output - yours may be different.
```
hello@goodbye:~$ nuke amarok emacs vim
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Couldn't find package amarok
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Couldn't find package emacs
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Couldn't find package vim
hello@goodbye:~$
```
1

function nuke() { if [ $(whoami) != "root" ] ; then for x in $@; do sudo apt-get autoremove --purge $x; done; else for x in $@; do apt-get autoremove --purge $x; done; fi }

ruinbox · 2009-03-25 23:21:21 8
Throttling Bandwidth On A Mac

sudo ipfw pipe 1 config bw 50KByte/s Set the bandwidth (bw) limit to any number you want. For example you could have a 15kb pipe for X application and then a 100kb pipe for another application and attach things to those pipes. If a port isn’t attached to a pipe, it runs at full speed. Change the number (in this case 1) to a different number for a different pipe. The next step is to attach your port. sudo ipfw add 1 pipe 1 src-port 80 In this case anything on port 80 (http) will be set to a limit of 50Kbyte/s. If you want to attach a second port to this pipe, repeat the command but change the port number at the end. src : http://www.mactricksandtips.com/2008/12/throttling-bandwidth-on-a-mac.html
This is sample output - yours may be different.
1

sudo ipfw pipe 1 config bw 50KByte/s;sudo ipfw add 1 pipe 1 src-port 80

miccaman · 2009-07-02 23:17:49 6
Get the size of all the directories in current directory
This is sample output - yours may be different.
1

sudo du -sh $(ls -d */) 2> /dev/null

Code_Bleu · 2009-08-07 19:00:09 4
Watch postgresql calls from your application on localhost

It's certainly not nicely formatted SQL, but you can see the SQL in there...
This is sample output - yours may be different.
1

sudo tcpdump -nnvvXSs 1514 -i lo0 dst port 5432

ethanmiller · 2009-12-18 17:12:44 4
Fix the vi zsh bindings on ubuntu

Use sed to comment out any up/down bindings in zsh
This is sample output - yours may be different.
1

sudo sed -iorig '/$up\|down$/s/^/#/' /etc/zsh/zshrc

cbrinker · 2010-02-02 23:17:08 27
Show the 1000*1000 and 1024*1024 size of HDs on system
This is sample output - yours may be different.
1

awk '/d[a-z]+$/{print $4}' /proc/partitions | xargs -i sudo hdparm -I /dev/{} | grep 'device size with M'

rthemocap · 2010-03-02 20:06:03 5
Change attributes of files so you can edit them

I had problems in Ubuntu while trying to edit /etc/resolv.conf, even with sudo I couldn't make any change. After a 2 minutes search on google I found this command. Hope someone finds it useful. It works like chmod, with + and - to denote which attributes are being added and which are being removed. See other attributes on man pages or on wikipedia http://en.wikipedia.org/wiki/Chattr
This is sample output - yours may be different.
1

sudo chattr -i <file that cannot be modified>

leovailati · 2010-03-25 03:14:34 4
Spoof your wireless MAC address on OS X to 00:e2:e3:e4:e5:e6

If you want to check that the spoof worked, type the same command as earlier: ifconfig en1 | grep ether Now you will see: ether 00:e2:e3:e4:e5:e6 For the wired ethernet port: sudo ifconfig en0 ether 00:e2:e3:e4:e5:e6
This is sample output - yours may be different.
1

sudo ifconfig en1 ether 00:e2:e3:e4:e5:e6

rpavlick · 2010-03-30 21:48:55 4
How to speedup the Ethernet device

ethtool is used for querying settings of an ethernet device and changing them. In this example I setup 100 Mb/s full duplex on my Linux Box
This is sample output - yours may be different.
1

sudo ethtool -s eth0 speed 100 duplex full

0disse0 · 2010-04-05 10:36:27 8
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Convert PNG to GIF

(relies on 'imagemagick') Convert all .png files to .gif. This can also go the other way if you reverse the file extensions in the command, e.g.: $ for file in *.gif; do convert "$file" "$(basename $file .gif).png"; done If the file is named 'example1.png' it will be named 'example1.gif' when it is complete.

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

Use AWS CLI and JQ to get a list of instances sorted by launch time

You can do the filtering natively in the aws cli, without using jq (although jq is awesome!)

Remove BOM (Byte Order Mark) from text file

Takes file (text.txt), removes BOM from it, and outputs the result to a new file (newFile.txt). BOM is "Byte Order Mark" ([http://en.wikipedia.org/wiki/Byte_order_mark]), an invisible, non-breaking, zero-length character. In other words, if you see a DIFF with "" at the beginning, you've got a byte order mark, which can't be removed without this command or a hex editor. It can appear for a number of reasons, such as getting copied to/from a UNIX filesystem...

Swap the two last arguments of the current command line

Say you just typed a long command like this: $ rsync -navupogz --delete /long/path/to/dir_a /very/long/path/to/dir_b but you really want to sync dir_b to dir_a. Instead of rewriting all the command line, just type followed by , and your command line will read $ rsync -navupogz --delete /very/long/path/to/dir_b /long/path/to/dir_a

Print line immediately before a matching regex.

Use this if you don't have access to GNU grep's -B option.

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

Use Cygwin to talk to the Windows clipboard

I spent a bunch of time yesterday looking for the xsel package in Cygwin- turns out you can use the /dev/clipboard device to do the same thing.

Benchmark SQL Query

Benchmark a SQL query against MySQL Server. The example runs the query 10 times, and you get the average runtime in the output. To ensure that the query does not get cached, use `RESET QUERY CACHE;` on top in the query file.

Execute a sudo command remotely, without displaying the password

The ssh command alone will execute the sudo command remotely, but the password will be visible in the terminal as you type it. The two stty commands disable the terminal from echoing the password back to you, which makes the remote sudo act as it does locally.

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Commands using sudo (537)

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