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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!
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awk, bash, curl, find, grep, Linux, sed
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Maintained by Jon H.

Site originally by David Winterbottom (user root).

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Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

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Commands using top from sorted by
Terminal - Commands using top - 17 results
echo "DISK:";df -Pl | grep -v "Filesystem" | awk '{print $5,$6}' ; echo "MEM:" ; free -mto | awk '{ print $1,$2,$3,$4 }'; echo "CPU:"; top -b -d1 -n1 | grep Cpu | awk '{print $2,$3,$4,$5,$6,$7,$8,$9}';echo "LOAD:"; cat /proc/loadavg
2014-09-29 12:43:52
User: injez
Functions: awk cat df echo free grep top
Tags: cpu usage memory usage disk usage monitoring load average
0
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Resource Monitoring

Monitoring system in one line :

DISK : disk space

MEM: memory ( mem , swap, Total)

CPU : all information about cpu activity

LOAD : load average

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top -bn2|awk -F, '/Cpu/{if (NR>4){print 100-gensub(/.([^ ]+).*/,"\\1","g",$4)}}'
2014-04-18 17:48:05
User: ichbins
Functions: awk top
Tags: top cpu cpuinfo
1
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Shows cpu load in percent

This version is precise and requires one second to collect statistics. Check sample output for a more generic version and also a remote computer invocation variant. It doesn't work with the busybox version of the 'top' command but can be adjusted

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top -n2 -d 0.5 | grep ^Cpu | sed 's/[[:alpha:]%]*//g' | awk 'NR == 2 {printf("%.2f\n",100-$5)}'
2012-09-06 12:56:26
User: wizzra
Functions: awk grep sed top
0
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Get Current CPU Usage

Get the current cpu % usage on your system.

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top -p $(pgrep -d , foo)
2012-06-27 20:59:09
User: michelsberg
Functions: top
Tags: top watch process ps monitor
15
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Use top to monitor only all processes with the same name fragment 'foo'

top accecpts a comma separated list of PIDs.

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top '-p' $(pgrep -d ' -p ' foo)
2012-06-27 18:32:03
User: __
Functions: top
Tags: top watch process ps monitor
3
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Use top to monitor only all processes with the same name fragment 'foo'

Like command 10870, but no need for sed

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top $(pgrep foo | sed 's|^|-p |g')
2012-06-14 15:13:00
User: michelsberg
Functions: sed top
Tags: top watch process ps monitor
5
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Use top to monitor only all processes with the same name fragment 'foo'
pgrep foo

may return several pids for process foobar footy01 etc. like this:

11427

12576

12577

sed puts "-p " in front and we pass a list to top:

top -p 11427 -p 12576 -p 12577
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top -b -n 1 | sed 1,6d
2012-03-01 13:27:55
User: mlsmaycon
Functions: sed top
3
Up
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Processes by CPU usage
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top -p `pgrep pidgin`
2011-11-23 20:35:53
User: cesarbustios
Functions: top
Tags: top monitoring
0
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Monitor especific process with top

You can also use different process using comma: top -p `pgrep pidgin`, `pgrep python` but you have to make sure the process exists or you'll get an error

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top -p `pidof apache2 | awk '{gsub(/[ ]/,",");print}'`
2011-07-28 20:13:36
User: hbalagtas
Functions: awk top
Tags: top processes top apache
0
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Monitor specific process (ie apache) using Top

Show only specific process id's using Top

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find . -type f -name '*.php' | xargs cat | sed -re ':top /\/\*.*\*\// { s/\/\*.*\*\///g ; t top }; /\/\*/ { N ; b top }' | awk '$0 !~ /^[\t[:space:]]*($|(\/\/)|(#))/' | wc -l
2011-05-05 06:12:34
User: andrehgw
Functions: awk cat find sed top wc xargs
0
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How many lines in your PHP project without comments

An advanced possibility to count the lines of code like in #8394

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top
2011-04-14 06:59:06
User: atgf0127
Functions: top
-2
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top

usage: top -hv | -bcisSHM -d delay -n iterations [-u user | -U user] -p pid [,pid ...]

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top -b -n 1 |grep httpd|wc -l
2010-07-25 08:40:03
User: dotanmazor
Functions: grep top wc
-4
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Show the number of current httpd processes

Of course, the httpd can be replaced with any other process name

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top -bn 1 | awk '{if($1 ~ /^[0-9]+$/ && $9 > 97) {print $1;exit}}'|xargs kill
2010-06-02 13:51:40
User: chx
Functions: awk top xargs
-1
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Kill processes hogging up CPU (Flash after resume)

I found Flash eating one of my CPUs after resume, the command above will help with that. For optional kicks you can put it into a script in /etc/pm/sleep.d/ (aspect in #swhack wrote this for me)

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top -b -n 1
2010-01-24 16:17:30
User: r00t4u
Functions: top
2
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Top Command in batch mode

running top command in batch mode. it is usefull if you want to redirect the output in a file.

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tmpfile=$(mktemp) && echo -e 'startup_message off\nscreen -t top htop\nsplit\nfocus\nscreen -t nethogs nethogs wlan0\nsplit\nfocus\nscreen -t iotop iotop' > $tmpfile && sudo screen -c $tmpfile
2009-08-03 10:14:02
User: Patola
Functions: echo screen sudo top
18
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Triple monitoring in screen

This command starts screen with 'htop', 'nethogs' and 'iotop' in split-screen. You have to have these three commands (of course) and specify the interface for nethogs - mine is wlan0, I could have acquired the interface from the default route extending the command but this way is simpler.

htop is a wonderful top replacement with many interactive commands and configuration options. nethogs is a program which tells which processes are using the most bandwidth. iotop tells which processes are using the most I/O.

The command creates a temporary "screenrc" file which it uses for doing the triple-monitoring. You can see several examples of screenrc files here: http://www.softpanorama.org/Utilities/Screen/screenrc_examples.shtml

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top
2009-03-18 00:03:42
User: Zenexer
Functions: top
Tags: Process Management
-5
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View process statistics in realtime

A simple but effective replacement for ps aux. I used to waste my time running ps over and over; top is the way to go. It also allows complex sorting options. Press q to exit "nicely" (Ctrl + C is always an option, of course). Note that the list updates each second, resorting in the process; if you're trying to grab a specific PID, you might be better off with ps.

htop

Alternatively, htop is available, though it may not come pre-installed. htop is slightly more interactive than top and includes color coding, visuals, and a nice interface for selecting and then killing processes. (Thanks to bwoodacre for this great tool.)

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top -b -n 1 | awk '{if (NR <=7) print; else if ($8 == "D") {print; count++} } END {print "Total status D: "count}'
2009-02-19 21:14:46
User: jcgam69
Functions: awk top
4
Up
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count processes with status "D" uninterruptible sleep
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