Commands using watch sorted by votes

Commands using watch (155)

sorted by

Show current folder that is searched by find command
This is sample output - yours may be different.
0

watch readlink -f /proc/$(pidof find)/cwd

niltonvasques · 2015-07-19 12:26:43 9
This command watches the top 10 processes currently taking up the most memory with thread & other info, incase you don't want to use the TOP or HTOP command.

This is a alternate command I like to use instead of TOP or HTOP to see what are the processes which are taking up the most memory on a system. It shows the username, process ID, CPU usage, Memory usage, thread ID, Number of threads associated with parent process, Resident Set Size, Virtual Memory Size, start time of the process, and command arguments. Then it's sorted by memory and showing the top 10 with head. This of course can be changed to suit you needs. I have a small system which is why Firefox is taking so much resources. Show Sample Output
This is sample output - yours may be different.
```
Every 0.8s: ps -eaLo uname,pid,pcpu,pmem,lwp,nlwp,rss,vsz,start_time,args --sort -pmem| head -10                 Tue May 10 21:02:16 2016

USER       PID %CPU %MEM   LWP NLWP   RSS    VSZ START COMMAND
ubercoo    20870 20.1 43.3 20870   48 388144 1660272 May09 /usr/lib/firefox/firefox
ubercoo    20870  0.0 43.3 20889   48 388144 1660272 May09 /usr/lib/firefox/firefox
ubercoo    20870  0.0 43.3 20890   48 388144 1660272 May09 /usr/lib/firefox/firefox
ubercoo    20870  0.5 43.3 20891   48 388144 1660272 May09 /usr/lib/firefox/firefox
ubercoo    20870  0.1 43.3 20893   48 388144 1660272 May09 /usr/lib/firefox/firefox
ubercoo    20870  0.1 43.3 20894   48 388144 1660272 May09 /usr/lib/firefox/firefox
ubercoo    20870  0.1 43.3 20895   48 388144 1660272 May09 /usr/lib/firefox/firefox
ubercoo    20870  0.1 43.3 20896   48 388144 1660272 May09 /usr/lib/firefox/firefox
ubercoo    20870  0.1 43.3 20897   48 388144 1660272 May09 /usr/lib/firefox/firefox
```
0

watch -n .8 'ps -eaLo uname,pid,pcpu,pmem,lwp,nlwp,rss,vsz,start_time,args --sort -pmem| head -10'

ubercoo · 2016-05-11 01:05:53 11
Monitor Wireless Adapter Stats

Monitors basic wireless interface statistics, such as signal strength and discarded packets. The watch command's -n parameter sets a refresh rate of every 1 second. Show Sample Output
This is sample output - yours may be different.
```
Inter-| sta-|   Quality        |   Discarded packets               | Missed | WE
 face | tus | link level noise |  nwid  crypt   frag  retry   misc | beacon | 22
 wlan0: 0000   58.  -52.  -256        0      0      0    449    540        0
```
0

watch -n 1 cat /proc/net/wireless

1nF1D3L · 2016-09-04 02:44:51 16
Watch top 10 processes sorted by cpu usage
This is sample output - yours may be different.
0

watch "ps aux | sort -nrk 3,3 | head -n 10"

sidneycrestani · 2016-11-20 02:43:41 15
Watch active calls on an Asterisk PBX
This is sample output - yours may be different.
0

watch -n 5 "asterisk -rx 'core show calls' | grep active"

vperalta · 2017-02-14 15:05:44 16
Watch Processes with D status (sleep and wait for IO)
This is sample output - yours may be different.
0

watch -n 1 "(ps aux | awk '\$8 ~ /D/ { print \$0 }')"

ara4sh · 2017-04-15 10:39:02 18

Watch all postgres processes, sorted by memory use

Continuously watches postgres, showing the instances using the most RAM at the top. Show Sample Output

watch -n 1 '{ ps aux | head -n 1; ps aux --sort -rss | grep postgres | grep -v grep; } | cat'

carbocation · 2017-05-14 17:01:44 16

Shows live outboud connection attempts and/or suceess, refreshing every 0.5 seconds

This is very handy for troubleshooting apps connection to internet. Shows an app's outgoing ip/port before and after connection established. Run this command and init the app you're investigating. I used that when trying to understand what is the destination's ip/port needed to open in firewall, for a specific VPN app. Similar for windows cmd: netstat -nafo | find /v "LISTENING" | find /v "0.0.0.0" | find /v "127.0.0.1"
This is sample output - yours may be different.
0

watch -n0.5 -d "netstat -nafo | grep -v -E 'LISTENING|0.0.0.0|127.0.0.1|\[::\]:|\[::1\]:'"

odedode4 · 2018-01-29 11:01:30 20
Monitor ElasticSearch cluster health - Useful for keeping an eye on ES when rebalancing takes place
This is sample output - yours may be different.
0

watch -n 1 curl -XGET 'http://localhost:9200/_cluster/health?pretty=true'

jmarek · 2018-06-17 15:58:39 243

OMG, you are a Gentoo junkie. -funroll-loops-me-harder ;-) http://ccache.samba.org/ ccache is a compiler cache, which speeds up your compiler on successive runs, because it caches intermediate compiled output. Show Sample Output

-1

watch ccache -s

piyo · 2009-02-13 17:16:32 12

Watch mysql processlist on a remote host

Locally watch MySQL process list update every 5s on a remote host. While you watch pipe to a file. The file out put is messy though but hey at least you have a history of what you see.
This is sample output - yours may be different.
-1

watch -n 0.5 ssh [user]@[host] mysqladmin -u [mysql_user] -p[password] processlist | tee -a /to/a/file

lunarblu · 2009-08-19 14:21:27 6
bash function to check for something every 5 seconds

Every seconds do Show Sample Output
This is sample output - yours may be different.
```
Every 10,0s: ls /tmp                           Fri Sep  4 19:19:11 2009
...
<list of files>
```
-1

watch -n <seconds> <command>

aonick · 2009-09-04 15:19:42 3
keep an eye on system load changes
This is sample output - yours may be different.
-1

watch -n 7 -d 'uptime | sed s/.*users?, //'

matthewbauer · 2010-01-17 18:45:52 3
Console clock
This is sample output - yours may be different.
-1

watch -n1 echo

rubenmoran · 2011-02-10 08:55:09 8
Monitoring TCP connections number

Monitoring TCP connections number showing each state. It uses ss instead of netstat because it's much faster with high trafic. You can fgrep specific ports by piping right before awk: watch "ss -nat | fgrep :80 | awk '"'{print $1}'"' | sort | uniq -c" Show Sample Output
This is sample output - yours may be different.
```
      3 CLOSE-WAIT
      1 CLOSING
   1013 ESTAB
      6 FIN-WAIT-1
     29 FIN-WAIT-2
     20 LISTEN
      1 State
    323 TIME-WAIT
```
-1

watch "ss -nat | awk '"'{print $1}'"' | sort | uniq -c"

ricardofunke · 2012-12-07 19:07:33 8
stream facebook feed

Streams your timeline on the commandline, required fbcmd https://github.com/dtompkins/fbcmd
This is sample output - yours may be different.
-1

watch -n -0.1 fbcmd stream timeline

hako · 2013-04-20 17:36:18 11
A simple overview of memory usage refreshed at user designated intervals.

This command shows a high level overview of system memory and usage refreshed in seconds. Change -n 10 to you desired refresh interval. Show Sample Output
This is sample output - yours may be different.
```
Every 10.0s: free -m                                                                   Fri Jan  3 15:58:44 2014

             total       used       free     shared    buffers     cached
Mem:         12001       3565       8435          0        268       1613
-/+ buffers/cache:       1682      10318
Swap:         1951          0       1951
```
-1

watch -n 10 free -m

Darkstar · 2014-01-04 10:10:15 12
Display clock in terminal

'watch' repeatedly (default every 2 seconds, -n 1 => every second) runs a command (here ':', a shorthand for 'true'), displays the output (here nothing) and the date and time of the last run. I thought it to be obvious but it seemingly is not: to exit use Ctrl-C.
This is sample output - yours may be different.
-2

watch -n 1 :

penpen · 2009-03-25 23:00:28 6
easly monitor mem usage
This is sample output - yours may be different.
-2

watch -n1 --differences cat /proc/meminfo

hypnojazz · 2009-03-26 15:27:37 9
Not so simple countdown from a given date

An improved version of http://www.commandlinefu.com/commands/view/1772/simple-countdown-from-a-given-date that uses Perl to pretty-print the output. Note that the GNU-style '--no-title' option has been replaced by its one-letter counterpart '-t'. Show Sample Output
This is sample output - yours may be different.
```
4d 23:15:43
```
-2

watch -tn1 'bc<<<"`date -d'\''friday 21:00'\'' +%s`-`date +%s`"|perl -ne'\''@p=gmtime($_);printf("%dd %02d:%02d:%02d\n",@p[7,2,1,0]);'\'

penpen · 2009-03-29 19:53:36 8
Monitor the Kernel Ring Buffer

Useful with new unknown devices or just monitoring, probably useful for the sysadmin. Updates every 2 seconds. More here: http://linuxclisecurity.blogspot.com/2009/12/monitor-kernel-ring-buffer.html.
This is sample output - yours may be different.
-2

watch 'dmesg | tail -15'

Heoa · 2009-12-20 02:00:05 3
big countdown clock with hours, minutes and seconds

Change HH:MM with your target time. This is for a Debian/Ubuntu GNU system. You need bash (package bash), date (package coreutils) and toilet (package toilet). Install with: # apt-get install bash coreutils toilet toilet-fonts
This is sample output - yours may be different.
-2

watch -tn1 'date -u +%T -d @$(expr $(date -d HH:MM +%s) - $(date +%s)) | toilet -f bigmono12'

prayer · 2010-06-26 11:56:11 3
Watch for blocked NGINX processes for tuning purposes

This command counts the number of blocked NGINX processes every 2 seconds and shows the last 22 measurements You should have at least the number of cpu's in a non-blocked state. The command up to the first ; truncates the log file. Show Sample Output
This is sample output - yours may be different.
```
Every 2.0s: ps up 16902,16903,16904,16905,16906,16907,16908,16909,16910,16911,1...  Wed Mar 16 17:49:08 2011

0
0
0
0
0
0
0
0
0
```
-2

> /tmp/psup.log; watch "ps up $(pgrep -d, -x nginx) | grep -v STAT | awk '{print $8}' | grep -c [ZUTD] >> /tmp/psup.log; tail -n 22 /tmp/psup.log"

donnoman · 2011-03-16 17:49:23 3
Displaying wireless signal on screen in realtime.
This is sample output - yours may be different.
-2

watch -n 1 "awk 'NR==3 {print \"Signal strength = \" \$3 \"00 %\"}''' /proc/net/wireless"

jlaunay · 2012-06-07 11:00:56 8
Show who is logged on and find out what they are doing
This is sample output - yours may be different.
-2

watch w

techie · 2013-05-07 15:02:41 10
‹ First < 4 5 6 7 >

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

FAST Search and Replace for Strings in all Files in Directory

I needed a way to search all files in a web directory that contained a certain string, and replace that string with another string. In the example, I am searching for "askapache" and replacing that string with "htaccess". I wanted this to happen as a cron job, and it was important that this happened as fast as possible while at the same time not hogging the CPU since the machine is a server. So this script uses the nice command to run the sh shell with the command, which makes the whole thing run with priority 19, meaning it won't hog CPU processing. And the -P5 option to the xargs command means it will run 5 separate grep and sed processes simultaneously, so this is much much faster than running a single grep or sed. You may want to do -P0 which is unlimited if you aren't worried about too many processes or if you don't have to deal with process killers in the bg. Also, the -m1 command to grep means stop grepping this file for matches after the first match, which also saves time.

exit if another instance is running

Gets the X11 Screen resolution

Requires xrandr, grep and, sed.

show git commit history

list files recursively by size

Copy file content to X clipboard

(only when vim has been compiled with +clipboard)

Random file naming

Get number of users on a minecraft server

I'm flat-out surprised that minecraft directory services require servers install multiple modifications to their server code, when the directories could fetch this information on their own.

Google URL shortener

use curl and sed to shorten an url via goo.gl

Ask for a password, the passwd-style

You can ask repeatedly for a non-blank password using this function: function read_password() { while [ ! -n "$USER_PASSWORD" ]; do read -s -p"Password: " USER_PASSWORD if [ ! -n "$USER_PASSWORD" ]; then echo "ERROR: You must specify a valid password, please try again" fi echo done } Also you can set a time out (in seconds) to write the password read -t 10 -s -p"Password: " USER_PASSWORD_VARIABLE if [ ! $? -eq 0 ]; then echo "Time out!" fi

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:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands using watch

Commands using watch (155) the last day the last week the last month all time sorted by date votes

What's this?

Check These Out

Stay in the loop…

Commands using watch (155)

sorted by