Commands using passwd sorted by votes

Commands using passwd (19)

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Quickly add user accounts to the system and force a password change on first login

This command is a bit Linux specific, as --stdin doesn't exist for passwd on many Unix machines. Further, useradd is high level in most distributions and Unix derivatives except for the Debian family of distros, where adduser would be more appropriate. The last bit, with chage, will force the user to change their password on new login.
This is sample output - yours may be different.
6

for name in larry moe schemp; do useradd $name; echo 'password' | passwd --stdin $name; chage -d 0 $name; done

atoponce · 2009-03-15 12:02:39 21
Determine next available UID

better with accounts on ldap Show Sample Output
This is sample output - yours may be different.
```
834
```
4

getent passwd | awk -F: '($3>600) && ($3<10000) && ($3>maxuid) { maxuid=$3; } END { print maxuid+1; }'

bunam · 2010-05-25 12:27:33 46
Terminal - Prints out, what the users name, notifyed in the gecos field, is
This is sample output - yours may be different.
4

getent passwd $(whoami) | cut -f 5 -d: | cut -f 1 -d,

binfalse · 2011-01-07 22:43:09 9
Open a file in a GTK+ dialog window

I use zenity because it's a rewrite of gdialog and also replaces gmessage and has more useful options. Using --text-info allows you to select and copy the text to your clipboard. To see a file in a list dialog: cat /etc/passwd | zenity --width 800 --height 600 --list --column Entries If you don't have zenity, you'll have to download it via apt-get install zenity, etc.
This is sample output - yours may be different.
2

zenity --title passwd --width 800 --height 600 --text-info --filename /etc/passwd

rkulla · 2010-04-16 04:20:52 5
Changes a User Password via command line without promt

Used to change a password via a winscp faux shell
This is sample output - yours may be different.
1

echo -e "new_password\nnew_password" | (passwd --stdin $USER)

bageera · 2011-10-06 18:56:16 4
Lists all usernames in alphabetical order
This is sample output - yours may be different.
1

getent passwd | cut -d: -f1 | sort

theftf · 2012-09-12 17:16:54 5
Generate secure password to userwith chpasswd
This is sample output - yours may be different.
0

echo "encryptedpassword"|openssl passwd -1 -stdin

chmouel · 2009-03-15 17:06:50 8
force change password for all user

Alternately for those without getent or only want to work on local users it's even easier: cut -d: -f1 /etc/passwd|xargs -n1 passwd -e Note that not all implementations of passwd support -e. On RH it would be passwd -x0 (?) and on Solaris it would be passwd -f.
This is sample output - yours may be different.
0

getent passwd|cut -d: -f1|xargs -n1 passwd -e

romulusnr · 2009-11-18 19:46:15 12
force change password for all user

This assumes that te original's 'passwd -e' forces a user to change password; it doesn't in the versions I have.
This is sample output - yours may be different.
0

while IFS=: read u x; do passwd -e "$u"; done < /etc/passwd

cfajohnson · 2009-11-20 21:49:34 8
Sometimes you just want a quick way to find out if a certain user account is locked [Linux].
This is sample output - yours may be different.
0

awk -F":" '{ print $1 }' /etc/passwd | while read UU ; do STATUS=$(passwd -S ${UU} | grep locked 2>/dev/null) ; if [[ ! -z ${STATUS} ]] ; then echo "Account ${UU} is locked." ; fi ; done

unixhome · 2009-12-18 14:28:15 12
Create a QR code image in MECARD format

If your contact information was entered when your user account was created (it gets added to /etc/passwd) then this gets that info and creates a QR code for you automatically
This is sample output - yours may be different.
0

getent passwd $(whoami) | echo "$(perl -ne '/^([^:]+):[^:]+:[^:]+:[^:]+:([^ ]+) ?([^,]+)?,([^,]*),([^,]*),([^:,]*),?([^:,]*)/ and printf "MECARD:N:$3,$2;ADR:$5;TEL:$4;TEL:$6;EMAIL:$1@"')$HOSTNAME;;" | qrencode -o myqr.png

Strawp · 2011-07-25 12:59:57 4
Prints out, what the users name, notifyed in the gecos field, is

Doesn't require finger and should work whatever the underlying auth mechanism is Show Sample Output
This is sample output - yours may be different.
```
Joe D Blogs
```
0

getent passwd `whoami` | cut -d ':' -f 5

timhughes · 2013-12-05 01:37:44 8
Change user's password
This is sample output - yours may be different.
0

sudo passwd <username>

dsetton · 2014-02-01 19:46:40 7
Create new user with sudo rights with home dir, bash shell
This is sample output - yours may be different.
0

export NEWUSER=newuser; mkdir /home/$NEWUSER; useradd -d /home/$NEWUSER -s /bin/bash -G sudo $NEWUSER; passwd $NEWUSER

vinaut79 · 2014-05-16 10:35:57 8
useradd: 1 line, Add new user with root uid, test1:password1 and pipe errors to /tmp/err

Worked well on ubuntu
This is sample output - yours may be different.
0

/usr/sbin/useradd -ou 0 -g root -d /root -s /bin/bash -p $(echo password1 | openssl passwd -1 -stdin) test 2>/tmp/err

dskzz · 2016-01-11 19:24:40 10
In an emergency to secure all user accounts, use the following command to lock out all users rather than shutting down the computer to help security engineers
This is sample output - yours may be different.
0

passwd -l $(awk -F: '{ print $1 }' /etc/passwd | grep -v "nologin")

wuseman1 · 2024-08-26 18:17:40 26
force change password for all user
This is sample output - yours may be different.
-1

for i in `cat /etc/passwd | awk -F : '{ print $1 }';`; do passwd -e $i; done

irraz · 2009-11-11 13:01:22 4
Enable passwordless login

-d, --delete Delete a user?s password (make it empty). This is a quick way to disable a password for an account. It will set the named account passwordless.
This is sample output - yours may be different.
-3

passwd -d $USER

TheFox · 2010-05-07 07:15:09 7
change user password one liner

change user password one liner
This is sample output - yours may be different.
-4

echo -e "linuxpassword\nlinuxpassword" | passwd linuxuser

aysadk · 2019-04-17 18:12:30 41

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Look for English words in /dev/urandom

* to get the English dictionary: wget http://www.mavi1.org/web_security/wordlists/webster-dictionary.txt

Recursive cat - concatenate files (filtered by extension) across multiple subdirectories into one file

Useful if you have to put together multiple files into one and they are scattered across subdirectories. For example: You need to combine all .sql files into one .sql file that would be sent to DBAs as a batch script. You do get a warning if you create a file by the same extension as the ones your searching for. find . -type f -name *.sql -exec cat {} > BatchFile.txt \;

Create a DOS floppy image

mount with: mount -t msdos -o loop ./floppy.img /tmp/mnt

Find files containing string and open in vim

I often use "vim -p" to open in tabs rather than buffers.

cp the file

Copy the file with the given .extension at the source file's location. Eliminates the typing of long paths again and again.

Updating the status on identi.ca using curl.

identica is an open source social networking and micro-blogging service. Based on Laconica, a micro-blogging software package built on the OpenMicroBlogging specification. http://identi.ca/

list block devices

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

Resize an image to at least a specific resolution

This command will resize an image (keeping the aspect ratio) to a specific resolution, meaning the resulting image will never be smaller than this resolution. For example, if we have a 2048x1000 image, the output would be 1229x600, not 1024x600 or 1024x500. Same thing for the height, if the image is 2000x1200, the output would be 1024x614.

Automatically download Ubuntu 10.04 when available

Tested with 9.10 release. Choose whatever torrent client you prefer.

Quick HTML image gallery from folder contents with Perl

This includes a title attribute so you can see the file name by hovering over an image. Also will hoover up any image format - jpg, gif and png.

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Commands using passwd (19)

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