Commands tagged users sorted by votes

Commands tagged users (23)

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Chage default shell for all users [FreeBSD]

This command will set bash as the default shell for all users in a FreeBSD system.
This is sample output - yours may be different.
6

cd /usr/home && for i in *;do chsh -s bash $i;done

casidiablo · 2009-12-31 18:48:53 7
Lists all usernames in alphabetical order
This is sample output - yours may be different.
6

cut -d: -f1 /etc/passwd | sort

dan · 2011-12-20 10:46:52 12
Lists all usernames in alphabetical order

Save some CPU, and some PIDs. :)
This is sample output - yours may be different.
5

awk -F ':' '{print $1 | "sort";}' /etc/passwd

atoponce · 2011-12-20 12:46:52 4
Find the 10 users that take up the most disk space
This is sample output - yours may be different.
4

du -sm /home/* | sort -nr | head -n 10

dan · 2012-09-11 13:09:22 5
List all users and groups
This is sample output - yours may be different.
3

groups $(cut -f1 -d":" /etc/passwd) | sort

tpaisndbgps · 2013-04-27 07:12:22 16
Shows users and 'virtual users' on your a unix-type system

Shows a list of users that currently running processes are executing as. YMMV regarding ps and it's many variants. For example, you might need: ps -axgu | cut -f1 -d' ' | sort -u Show Sample Output
This is sample output - yours may be different.
```
USER
_coreaudiod
_locationd
_lp     
_mdnsresponder
_spotlight
_usbmuxd
_windowserver
_www    
daemon  
dfaulkner    
root    
```
2

ps -eo user | sort -u

dfaulkner · 2010-07-07 12:28:44 8
See how many more processes are allowed, awesome!

There is a limit to how many processes you can run at the same time for each user, especially with web hosts. If the maximum # of processes for your user is 200, then the following sets OPTIMUM_P to 100. OPTIMUM_P=$(( (`ulimit -u` - `find /proc -maxdepth 1 $ -user $USER -o -group $GROUPNAME $ -type d|wc -l`) / 2 )) This is very useful in scripts because this is such a fast low-resource-intensive (compared to ps, who, lsof, etc) way to determine how many processes are currently running for whichever user. The number of currently running processes is subtracted from the high limit setup for the account (see limits.conf, pam, initscript). An easy to understand example- this searches the current directory for shell scripts, and runs up to 100 'file' commands at the same time, greatly speeding up the command. find . -type f | xargs -P $OPTIMUM_P -iFNAME file FNAME | sed -n '/shell script text/p' I am using it in my http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html especially for the xargs command. Xargs has a -P option that lets you specify how many processes to run at the same time. For instance if you have 1000 urls in a text file and wanted to download all of them fast with curl, you could download 100 at a time (check ps output on a separate [pt]ty for proof) like this: cat url-list.txt | xargs -I '{}' -P $OPTIMUM_P curl -O '{}' I like to do things as fast as possible on my servers. I have several types of servers and hosting environments, some with very restrictive jail shells with 20processes limit, some with 200, some with 8000, so for the jailed shells my xargs -P10 would kill my shell or dump core. Using the above I can set the -P value dynamically, so xargs always works, like this. cat url-list.txt | xargs -I '{}' -P $OPTIMUM_P curl -O '{}' If you were building a process-killer (very common for cheap hosting) this would also be handy. Note that if you are only allowed 20 or so processes, you should just use -P1 with xargs. Show Sample Output
This is sample output - yours may be different.
```
16
```
1

echo $(( `ulimit -u` - `find /proc -maxdepth 1 $ -user $USER -o -group $GROUPNAME $ -type d|wc -l` ))

AskApache · 2010-03-12 08:42:49 7
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
Find the 10 users that take up the most disk space

In OSX you would have to make sure that you "sudo -s" your way to happiness since it will give a few "Permission denied" errors before finally spitting out the results. In OSX the directory structure has to start with the "Users" Directory then it will recursively perform the operation. Your Lord and master, Mematron Show Sample Output
This is sample output - yours may be different.
```
19234	/Users/mematron
3	/Users/Shared
1	/Users/n00b
1	/Users/fignewton
1	/Users/spam
0	/Users/akira
```
1

sudo -s du -sm /Users/* | sort -nr | head -n 10

mematron · 2012-09-13 10:15:23 5
Pretty-print user/group info for a given user
This is sample output - yours may be different.
1

id <username> | sed s/' '/'\n'/g | sed s/,/',\n '/g | sed s/'('/' ('/g | sed s/uid/' uid'/g | sed s/gid/' gid'/g | sed s/=/' = '/g

BoxingOctopus · 2016-10-04 16:53:29 19
Add user to group on OS X 10.5

adding users to groups on OS X is not a straightforward process, you need to use the new in built in Directory Service command line utility...
This is sample output - yours may be different.
0

sudo dscl localhost -append /Local/Default/Groups/admin GroupMembership username

kulor · 2009-09-03 04:40:10 3
List and count the number of open sessions per user
This is sample output - yours may be different.
0

users | xargs -n1 echo | sort | uniq -c

michaelmior · 2011-01-05 19:05:05 4
See how many more processes are allowed, awesome!
This is sample output - yours may be different.
0

echo $(($(ulimit -u)-$(pgrep -u $USER|wc -l))

h3xx · 2011-07-30 05:03:36 4
Show which user has the most accumulated login time
This is sample output - yours may be different.
0

ac -p | sort -nk 2 | awk '/total/{print x};{x=$1}'

pmbuko · 2011-12-14 15:47:02 4
Lists all users in alphabetical order
This is sample output - yours may be different.
0

cut -d: -f1 /etc/passwd | sort

snaewe · 2011-12-20 11:50:13 4
Find the 10 lusers winners of the "I take up the most disk space" award

the -h option of du and sort (on appropriate distrib) makes output "Human" readable and still sorted by "reversed size" (sort -rh) Show Sample Output
This is sample output - yours may be different.
```
55G	/home/user32
19G	/home/user45
6.7G	/home/user89
16M	/home/user02
64K	/home/user57
```
0

du -sh /home/*|sort -rh|head -n 10

toaster · 2012-09-12 11:54:06 6
Find the 10 users that take up the most disk space

without reverse...
This is sample output - yours may be different.
0

du -sm /home/* | sort -n | tail -10

bertatum · 2012-10-11 13:58:30 5
LDAP list of users and their details

Shows list of users and their details in LDAP
This is sample output - yours may be different.
0

ldapsearch -x -LLL uid=*

boylah · 2013-08-20 10:54:45 10
Changes the initial login group for all users with GID > 500 (specified with LIMIT), to group YOURGROUP

Credit for the awk command goes to: http://www.cyberciti.biz/faq/howto-move-migrate-user-accounts-old-to-new-server/
This is sample output - yours may be different.
0

for I in $(awk -v LIMIT=500 -F: '($3>=LIMIT) && ($3!=65534)' /etc/passwd | cut -f 1-1 -d ':' | xargs); do usermod -g YOURGROUP $I ; done

Edoard · 2013-09-06 15:18:16 7
Pretty-print user/group info for a given user
This is sample output - yours may be different.
0

id <user_name> | sed 's/,/\n/g' | tr ' ' '\n'

gadjodilo · 2017-12-24 02:33:40 25
Shows users and 'virtual users' on your a unix-type system
This is sample output - yours may be different.
-2

cut -d: -f1 /etc/passwd | sort

dog · 2010-07-07 12:12:02 7
Shows users and 'virtual users' on your a unix-type system
This is sample output - yours may be different.
-3

ps -axgu | cut -f1 -d' ' | sort -u

dfaulkner · 2010-07-07 12:29:46 6
Shows users and 'virtual users' on your a unix-type system

Most systems (at least my macbook) have system users defined, such as _www and using "users" for example will not list them. This command allows you to see who the 'virtual' users are on your system. Show Sample Output
This is sample output - yours may be different.
```
USER
_mdnsresponder
_mysql
_postfix
_spotlight
_usbmuxd
_windowserver
_www
couchdb
daemon
lloyd
root
```
-4

sudo lsof|sed 's/ */ /g'|cut -f3 -d' '|sort -u

binaryten · 2010-07-07 08:20:28 9

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Write comments to your history.

A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.

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" }

Ctrl+S Ctrl+Q terminal output lock and unlock

These are simple shortcuts to pause and continue terminal output, works in most terminals and screen multiplexers like screen. You can use it to catch something if things change too fast, and scroll with Shift + PgUp PgDown. On linux console ScrollLock can also be used.

Capitalize first letter of each word in a string

Ruby ftw

Convert all WMF images to SVG recursively ignoring file extension case

This assumes you have the package installed necessary for converting WMF files. On my Ubuntu box, this is libwmf-bin. I used this command, as libwmf is not on my wife's iMac, so I archived the directories containing the WMF files from OS X, ran them on my Ubuntu box, archived the resulting SVGs, and sent them back to her. Quick, simple and to the point. Searches directories recursively looking for extensions ignoring case. This is much more readable and clean than -exec for find. The while loop also gives further flexibility on complex logic. Also, although there is 'wmf2svg --auto', it expects lowercase extensions, and not uppercase. Because I want to ignore case, I need to use the -o option instead. Works in ZSH and BASH. Haven't tested in other shells.

Grep colorized

Highlights the search pattern in red.

Automatic ssh Session Logger

A wrapper around ssh to automatically provide logging and session handling. This function runs ssh, which runs screen, which runs script. . The logs and the screen session are stored on the server. This means you can leave a session running and re-attach to it later, or from another machine. . . Requirements: * Log sessions on a remote server * Transparent - nothing extra to type * No installation - nothing to copy to the server beforehand . Features: * Function wrapper delegating to ssh - so nothing to remember - uses .ssh/config as expected - passes your command line option to ssh * Self-contained: no scripts to install on the server * Uses screen(1), so is: - detachable - re-attachable - shareable * Records session using script(1) * Configurable log file location, which may contain variables or whitespace L="$HOME" # local variable L="\$HOME" # server variable L="some space" . Limitations: * Log dir/file may not contain '~' (which would require eval on the server) . . The sessions are named by the local user connecting to the server. Therefore if you detach and re-run the same command you will reconnect to your original session. If you want to connect/share another's session simply run: $ USER=bob ssh root@server . The command above is stripped down to an absolute minimum. A fully expanded and annotated version is available as a Gist (git pastebin): https://gist.github.com/flatcap/3c42326abeb1197ee714 . If you want to add timing info to script, change the command to: $ ssh(){ L="\$HOME/logs/$(date +%F_%H:%M)-$USER";/usr/bin/ssh -t "$@" "mkdir -p \"${L%/*}\";screen -xRRS $USER script --timing=\"$L-timing\" -f \"$L\"";}

Convert entire audio library in parallel

Uses parallel processing Reiteration of my earlier command https://www.commandlinefu.com/commands/view/15246/convert-entire-music-library Usage lc Old_Directory New_DIrectory Old_Format New_Format lc ~/Music ~/Music_ogg mp3 ogg

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Rename files in batch

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Commands tagged users (23) the last day the last week the last month all time sorted by date votes

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Commands tagged users (23)

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