Commands matching memory sorted by votes

Commands matching memory (148)

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Print process run time, average CPU usage, and maximum memory usage on exit

Bash has a built-in time command which provides less functionality than the real time command. Thus we reference /usr/bin/time directly. Since the command isn't very easy to remember you could alias it to something like "cputime" or even just "time". Show Sample Output
This is sample output - yours may be different.
```
/usr/bin/time -f "\ntime\t%E\nCPU\t%P\nRAM\t%Mk" sleep 10

time	0:10.00
CPU	0%
RAM	2216k
```
1

/usr/bin/time -f "\ntime\t%E\nCPU\t%P\nRAM\t%Mk" <command>

Negate · 2018-10-27 03:11:51 536
Find out how much ram memory has your video (graphic) card
This is sample output - yours may be different.
1

glxinfo |grep -i -o 'device|memory\|[0-9]\{1,12\} MB'|head -n 1

wuseman1 · 2020-09-14 02:12:47 773
Monitor memory without top or htop

It repeats a command, such as free, every five seconds and highlights the differences
This is sample output - yours may be different.
1

watch -n 5 -d '/bin/free -m'

mikhail · 2021-12-22 22:28:59 244
Shows a specific process memory usage
This is sample output - yours may be different.
1

mem() { ps -C "$1" -O rss | awk '{ count ++; sum += $2 }; END {count --; print "Number of processes:\t",count; print "Mem. usage per process:\t",sum/1024/count, "MB"; print "Total memory usage:\t", sum/1024, "MB" ;};'; }

mikhail · 2022-01-23 16:14:24 372
Disable Mac OS X Dashboard

Dashboard is OS X utility application. When you hit F12, Dashboard springs forward, dimming the background, some people have claimed memory or performance problems. In my case, I just don't use it, there may be other reasons you?d rather not have Dashboard available. Change YES to NO to restore the previous functionality.
This is sample output - yours may be different.
0

defaults write com.apple.dashboard mcx-disabled -boolean YES; killall Dock

starchox · 2009-02-17 23:22:24 7
what the free memory grow or shink
This is sample output - yours may be different.
0

watch -d "free -mt"

srineer · 2009-02-18 14:46:54 8
Test network performance, copying from the mem of one box, over the net to the mem of another

Note, the [remotePort] should be opened in the firewall first. First, start the destination box listening, then fire off the sending box. Data from the /dev/zero device in memory of the source machine is read out using dd, sent over the network with nc, and read back in from the other side of the network with nc, going to the /dev/null device. Essentially, it is a memory-network-memory copy operation, the output of dd will tell you how fast your network really is performing.
This is sample output - yours may be different.
0

dd if=/dev/zero bs=256M count=1 | nc [remoteIP] [remotePort] and on the other host nc -l port >/dev/null

tkunz · 2009-07-14 20:30:52 4
Sum of the total resident memory Stainless.app is using.

Adds up the total memory used by all Stainless processes: 1 Stainless, 1 StainlessManager and 1 StainlessClient per tab open. Show Sample Output
This is sample output - yours may be different.
```
638.469 MB
```
0

ps -ec -o command,rss | grep Stainless | awk -F ' ' '{ x = x + $2 } END { print x/(1024) " MB."}'

unixmonkey6893 · 2009-11-04 19:01:22 6
Sum using awk

This command will show you amount of memory used by apache Show Sample Output
This is sample output - yours may be different.
```
190.285
```
0

ps -ylC httpd --sort:rss | awk '{ SUM += $8 } END { print SUM/1024 }'

nasser · 2009-12-20 15:41:50 19
Setting gdb in memory allocation debugging mode under MAC OS X

setting gdb with this option / breakpoint before running the process will cause it to break whenever an memory allocation operation is not kosher.
This is sample output - yours may be different.
0

set env DYLD_INSERT_LIBRARIES = /usr/lib/libgmalloc.dylib;b szone_error

frank514 · 2010-10-13 20:25:48 3
Do stuff on disk more quickly

If you use eatmydata, all fsyncs will be ignored, so things will go much faster. Maybe not quite as fast as a ramdisk, but if you have enough free memory, the fs cache should help a lot. Just remember to sync afterwards--and if your system crashes in the middle of the command... :)
This is sample output - yours may be different.
0

eatmydata disk_thrashing_command

alphapapa · 2012-03-04 00:51:12 3
get function's source

useful if you want to get the source code of a in memory function Show Sample Output
This is sample output - yours may be different.
```
$ source_print source_print
source_print ()
{
    set | sed -n "/^$1/,/^}$/p"
}

$ source_print startx
startx ()
{
    test -x /usr/bin/startx || {
        echo "No startx installed" 1>&2;
        return 1
    };
    /usr/bin/startx ${1+"$@"} 2>&1 | tee $HOME/.xsession-errors
}
```
0

source_print(){ set | sed -n "/^$1/,/^}$/p"; };

glaudiston · 2010-11-24 15:55:34 4
Calculate a transcendental number (pi)

Calculate pi from the infinite series 4/1 - 4/3 + 4/5 - 4/7 + ... This expansion was formulated by Gottfried Leibniz: http://en.wikipedia.org/wiki/Leibniz_formula_for_pi I helped rubenmoran create the sum of a sequence of numbers and he replied with a command for the sequence: 1 + 2 -3 + 4 ... This set me thinking. Transcendental numbers! seq provides the odd numbers 1, 3, 5 sed turns them into 4/1 4/3 4/5 paste inserts - and + bc -l does the calculation Note: 100 million iterations takes quite a while. 1 billion and I run out of memory. Show Sample Output
This is sample output - yours may be different.
```
$ seq 1 2 99999999 | sed 's!^!4/!' | paste -sd-+ | bc -l
3.14159263358979321063
```
0

seq 1 2 99999999 | sed 's!^!4/!' | paste -sd-+ | bc -l

flatcap · 2011-02-09 23:36:07 6
Display the top ten running processes sorted by the memory usage:
This is sample output - yours may be different.
0

ps aux | awk '{if ($5 != 0 ) print $2,$5,$6,$11}' | sort -k2rn | head -10 | column -t

turrtle13 · 2016-07-01 19:40:56 12
show top 10 most memory hungry process with a simple format of (%mem, pid, short command)

Pros: the format is very simple, there is no need to show every columns, and full command with args the first column is memory consumption % the second column is pid the third is just the command (without full arguments, most application's arguments are too long) You can decide which application to kill then. Show Sample Output
This is sample output - yours may be different.
```
8.2 14730 MATLAB
 5.6  2236 nautilus
 3.1     1 chromium-browse
 2.7  2555 chromium-browse
24.7     1 dropbox
 1.8  2555 chromium-browse
 1.4  2550 chromium-browse
 1.2  2555 chromium-browse
 1.2  2555 chromium-browse
 1.2  2555 chromium-browse
```
0

ps -eo pmem,pid,comm --no-headers | sort -k1 -rn | head -10

dexterhu · 2011-03-11 04:51:35 5
Remove all unused shared memory segments for current user

It can work for message queue, semaphore set or shared memory just changing the parameter.
This is sample output - yours may be different.
0

ipcs -ma | awk '/^m / { if ($9 == 0) { print $2 }}' | xargs -n 1 ipcrm -m

keymon · 2011-07-26 15:53:59 6
display memory usage of a process

page where I got inspiration: http://www.commandlinefu.com/commands/view/5473/get-acurate-memory-usage-of-a-process-in-megabytes and http://www.commandlinefu.com/commands/view/10022/display-the-top-10-running-processes-sorted-by-memory-usage
This is sample output - yours may be different.
0

TOTAL_RAM=`free | head -n 2 | tail -n 1 | awk '{ print $2 }'`; PROC_RSS=`ps axo rss,comm | grep [h]ttpd | awk '{ TOTAL += $1 } END { print TOTAL }'`; PROC_PCT=`echo "scale=4; ( $PROC_RSS/$TOTAL_RAM ) * 100" | bc`; echo "RAM Used by HTTP: $PROC_PCT%"

0disse0 · 2012-02-03 16:10:36 12
Render man page in *temporary* PDF (works in Gnome)

Yeah yeah, another "render man page in pdf", but this time it creates a temporary PDF that stays resident in memory for viewing, but is eliminated on the filesystem. Replace evince with your PDF viewer of choice.
This is sample output - yours may be different.
0

man -t man | ps2pdf - temp.pdf; evince temp.pdf &> /dev/null &; sleep 3; rm temp.pdf

threv · 2011-12-08 17:40:47 9
Display how much memory installed on system

This will display the system memory size in kb. If you want to see the value in mb, you can type: grep MemTotal: /proc/meminfo | awk '{printf("MemTotal: %d MB\n",$2/1024)}' Show Sample Output
This is sample output - yours may be different.
```
$ grep MemTotal: /proc/meminfo
MemTotal:       16385508 kB
```
0

grep MemTotal: /proc/meminfo # display how much memory installed

mpb · 2015-05-15 09:19:02 17

Display the top ten running processes - sorted by memory usage

A nicer display from http://www.web-manual.net/linux-3/find-out-top-10-cpu-memory-consuming-processes/ Show Sample Output

ps axo %mem,pid,euser,cmd | sort -nr | head -n 10

lainme · 2012-10-12 03:27:26 16

Clean memory and SO cache
This is sample output - yours may be different.
0

sync ; /sbin/sysctl -w vm.drop_caches=3 ; sync ; sleep 2 ; /sbin/sysctl -w vm.drop_caches=0 ;/sbin/swapoff -a ; sleep 2 ;/sbin/swapon -a

szimbaro · 2013-02-27 12:39:20 4
Amount of physical memory in HP-UX

Get the amount of physical memory in an HP-UX v11 OS when following are NOT available: - root account - no privileges in /proc - no privileges in /dev/mem Show Sample Output
This is sample output - yours may be different.
```
user@hpuxhost:/home/user# machinfo | grep -i memory
Memory: 130938 MB (127.87 GB)
```
0

machinfo | grep -i memory

giorger · 2013-03-07 16:22:49 12
MEMORY DUMP ACROSS NETWORK 4 CYGWIN

wmr - | pv -s $SIZEOFMEM | ssh -p 40004 -c arcfour,blowfish-cbc -C root@savelocation.com "cat - > /forensics/T430-8gb-RAM1.dd" Run above command from Windows Cygwin: On Windows: Install Cygwin, and copy WMR (windows memory reader 1.0) memory diagnostic into cygwin\bin folder, also install cygwins netcat and ssh (openssh). I recommend installing apt-cyg and running " On Linux: Have an SSH Server SIMPLEST FORM: WINDOWS: # wmr - | ssh root@savelocation.com "cat - > /tmp/FileToSave.dd" For more details on how to extract information from memory dump: apt-get install foremost foremost -t all -T -i /forensics/T430-8gb-RAM1.dd For more information: http://www.kossboss.com/memdump-foremost Show Sample Output
This is sample output - yours may be different.
```
wmr - | pv -s $SIZEOFMEM  | ssh -p 40004 -c arcfour,blowfish-cbc -C root@savelocation.com "cat - > /forensics/T430-8gb-RAM1.dd"
Run above command from Windows Cygwin:

On Windows: Install Cygwin, and copy WMR (windows memory reader 1.0) memory diagnostic into cygwin\bin folder, also install cygwins netcat and ssh (openssh). I recommend installing apt-cyg and running "

On Linux: Have an SSH Server

SIMPLEST FORM:
WINDOWS: # wmr - | ssh root@savelocation.com "cat - > /tmp/FileToSave.dd"

For more details on how to extract information from memory dump:
apt-get install foremost
foremost -t all -T -i /forensics/T430-8gb-RAM1.dd

For more information:
http://www.kossboss.com/memdump-foremost
```
0

wmr - | pv -s $SIZEOFMEM | ssh -p 40004 -c arcfour,blowfish-cbc -C root@savelocation.com "cat - > /forensics/T430-8gb-RAM1.dd"

bhbmaster · 2013-05-31 00:04:19 103
Sum of RSS utilization in Linux

This command shows you how much is RSS utilization and real memory Show Sample Output
This is sample output - yours may be different.
```
4046.19
```
0

ps aux | awk '{sum+=$6} END {print sum / 1024}'

ara4sh · 2017-07-08 05:40:24 18
List user processes with their memory usage and total usage.

Add up the amount of memory your processes are using and display the total. Replace marcanuy with your desired username. Show Sample Output
This is sample output - yours may be different.
```
    PID   RSS COMMAND
 194491  1756 sshd: marcanuy@pts/0
 194501  2056 -bash
 200189  1132 ps -u marcanuy -o pid,rss,command
 200190   960 awk {print $0}{sum+=$2} END {print "Total", sum/1024, "MB"}
 221029  7916 php54 /home/marcanuy/devs/tweets.php
 221030  7632 php54 /home/marcanuy/devs/parser.php
Total 20.9492 MB
```
0

ps -u marcanuy -o pid,rss,command | awk '{print $0}{sum+=$2} END {print "Total", sum/1024, "MB"}'

marcanuy · 2013-11-20 01:21:59 7
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Make the Mac OS X Dock 2D once more (10.5 and above only)

Mac OS X 10.5 (Leopard) introduced a new, 3D, reflective Dock. For those of us who prefer the Dock to be a little less distracting, this command is the answer. The Dock will be rendered in the same style as when pinned to the left- or right-hand side of the screen. Replace YES with NO to restore the 3D Dock.

suspend to ram without root

$dbus-send --system --print-reply --dest="org.freedesktop.UPower" /org/freedesktop/UPower org.freedesktop.UPower.Suspend

Remount an already-mounted filesystem without unmounting it

Necessary for fsck for example. The remount functionality follows the standard way how the mount command works with options from fstab. It means the mount command doesn't read fstab (or mtab) only when a device and dir are fully specified. After this call all old mount options are replaced and arbitrary stuff from fstab is ignored, except the loop= option which is internally generated and maintained by the mount command. It does not change device or mount point.

Check if a domain is available and get the answer in just one line

Returns nothing if the domain exists and 'No match for domain.com' otherwise.

Live filter a log file using grep and show x# of lines above and below

echo unicode characters

history autocompletion with arrow keys

This will enable the possibility to navigate in the history of the command you type with the arrow keys, example "na" and the arrow will give all command starting by na in the history.You can add these lines to your .bashrc (without &&) to use that in your default terminal.

analyze traffic remotely over ssh w/ wireshark

Please check out my blog article on this for more detail. http://jdubb.net/blog/2009/08/07/monitor-wireshark-capture-real-time-on-remote-host-via-ssh/

Replace multiple spaces with semicolon

find filenames and directory names that doesn't conform ISO 9660 level 2

You might want to check what file and directory names would be renamed or chopped if you create iso 9660 level 2 image out of them. Use this command to check first.

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Commands matching memory (148)

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