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All commands from sorted by
Terminal - All commands - 12,019 results
sudo bash -c "> /var/log/httpd/access_log"
2014-10-02 15:39:47
User: zlemini
Functions: bash sudo
2
Up
Down
Null a file with sudo
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host `hostname` | rev | cut -d' ' f1 | rev
2014-10-01 18:55:05
User: shaggyhiggins
Functions: cut host rev
Tags: Network ifconfig IP network card dns
0
Up
Down
Get the IP address of a machine. Just the IP, no junk.

Gives the DNS listed IP for the host you're on... or replace `hostname` with any other host

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
(ps -U nms -o pid,nlwp,cmd:500 | sort -n -k2) && (ps -U nms -o nlwp | tail -n +2 | paste -sd+ | bc)
2014-09-30 18:25:56
User: cmullican
Functions: paste ps sort tail
0
Up
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Thread count by process, sorted + total

I occasionally need to see if a machine is hitting ulimit for threads, and what process is responsible. This gives me the total number, sorted low to high so the worst offender is at the end, then gives me the total number of threads, for convenience.

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niki
2014-09-30 12:38:32
User: NIKI
0
Up
Down
http://xat.com/VOLJENI_RADIO
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finger $(whoami) | perl -ne '/Name: ([a-zA-Z0-9 ]{1,})/ && print "$1\n"'
2014-09-30 11:37:47
User: zil0g
Functions: finger perl
Tags: bash perl regex username mac os x regexp
0
Up
Down
Get user's full name in Mac OS X
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pdftk fill_me_in.pdf output no_thanks.pdf flatten
2014-09-30 09:59:46
User: qdrizh
Tags: pdf print pdftk forms
0
Up
Down
Take a PDF with form fields and create a flattened PDF that will print properly

Some PDF viewers don't manage form fields correctly when printing. Instead of treating them as transparent, they print as black shapes.

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catmandu convert JSON --multiline 1 to YAML < file.json > file.yaml
2014-09-29 16:45:24
User: pavelkaroukin
Tags: perl json yaml
0
Up
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Convert JSON to YAML

This is based on __unixmonkey73469__ answer. You will need to supply `--multiline 1` option to JSON importer if your .json is multiline (i.e. it was prettyfied)

And you still need catmandu installed via `cpanm Catmandu`

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/bin/ls -lF "$@" | sed -r ': top; s/. ([0-9]+)([0-9]{3}[,0-9]* \w{3} )/ \1,\2/ ; t top'
2014-09-29 14:33:23
User: hackerb9
Functions: sed
Tags: size sed ls numbers histogram human-readable commas
2
Up
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Insert commas to make reading numbers easier in the output of ls

This modifies the output of ls so that the file size has commas every three digits. It makes room for the commas by destructively eating any characters to the left of the size, which is probably okay since that's just the "group".

 

Note that I did not write this, I merely cleaned it up and shortened it with extended regular expressions. The original shell script, entitled "sl", came with this description:

 

 : '

 : For tired eyes (sigh), do an ls -lF plus whatever other flags you give

 : but expand the file size with commas every 3 digits. Really helps me

 : distinguish megabytes from hundreds of kbytes...

 :

 : Corey Satten, corey@cac.washington.edu, 11/8/89

 : '

 

Of course, some may suggest that fancy new "human friendly" options, like "ls -Shrl", have made Corey's script obsolete. They are probably right. Yet, at times, still I find it handy. The new-fangled "human-readable" numbers can be annoying when I have to glance at the letter at the end to figure out what order of magnitude is even being talked about. (There's a big difference between 386M and 386P!). But with this nifty script, the number itself acts like a histogram, a quick visual indicator of "bigness" for tired eyes. :-)

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cat /usr/share/dict/words | egrep '^\w{13,}$' | egrep -iv '(\w).*\1'
2014-09-29 12:52:09
User: hackerb9
Functions: cat egrep
Tags: egrep wordlist regexp /usr/share/dict/words alphabet
6
Up
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Are there any words in the English language that use at least half of the alphabet without repeating any letters?

This is the most straightforward approach: first regexp limits dictionary file to words with thirteen or more characters, second regexp discards any words that have a letter repeated. (Bonus challenge: Try doing it in a single regexp!)

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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
Up
Down
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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history|awk '{print $2}'|sort|uniq -c|sort -rn|head -30|awk '!max{max=$1;}{r="";i=s=100*$1/max;while(i-->0)r=r"#";printf "%50s %5d %s %s",$2,$1,r,"\n";}'
2014-09-29 12:40:43
User: injez
Functions: awk head printf sort uniq
Tags: history histogram command
0
Up
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Top 30 History

Top 30 History Command line with histogram display

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rsync -arvz -e 'ssh -p 2233' --progress --delete remote-user@remote-server.org:/path/to/folder /path/to/local/folder
2014-09-26 10:42:26
User: nadavkav
Functions: rsync
Tags: ssh backup copy rsync
1
Up
Down
rsync over ssh using alternative port number

Useful, when you need to backup/copy/sync a folder over ssh with a non standard port number

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tcpdump -tnn -c 2000 -i eth0 | awk -F "." '{print $1"."$2"."$3"."$4}' | sort | uniq -c | sort -nr | awk ' $1 > 10 '
2014-09-26 01:15:23
User: hochmeister
Functions: awk sort tcpdump uniq
Tags: sort awk uniq tcpdump top ten
1
Up
Down
tcpdump top 10 talkers

capture 2000 packets and print the top 10 talkers

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kpartx -av <image-flat.vmdk>; mount -o /dev/mapper/loop0p1 /mnt/vmdk
2014-09-25 23:05:09
User: rldleblanc
Functions: mount
5
Up
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Mount a VMware virtual disk (.vmdk) file on a Linux box

This does not require you to know the partition offset, kpartx will find all partitions in the image and create loopback devices for them automatically. This works for all types of images (dd of hard drives, img, etc) not just vmkd. You can also activate LVM volumes in the image by running

vgchange -a y

and then you can mount the LV inside the image.

To unmount the image, umount the partition/LV, deactivate the VG for the image

vgchange -a n <volume_group>

then run

kpartx -dv <image-flad.vmdk>

to remove the partition mappings.

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sed -e "s/^127.0.1.1 $(hostname).novalocal/127.0.1.1/g" /etc/hosts
2014-09-25 15:38:43
User: renoirb
Functions: sed
Tags: sed edit hostname hosts
0
Up
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Edit hosts file to remove "foo.novalocal" from it where foo is the hostname of a new VM

When booting a VM through OpenStack and managed through cloudinit, the hosts file gets to write a line simiar to

127.0.1.1 ns0.novalocal ns0

This command proven useful while installing a configuration manager such as Salt Stack (or Puppet, or Ansible) and getting node name

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perl-rename -v 's/720p.+mkv/720p\.mkv/' *.mkv
2014-09-25 14:07:47
User: benkaiser
Functions: perl
Tags: rename arch linux
0
Up
Down
rename bunch of movie and srt files to all work with each other

I used this (along with a modified one replacing `mkv` with `srt`) to remove the slight differences in who the provider of the video / matching subtitle was (as they are the same contents and the subs match anyway).

So now VLC (and other video players) can easily guess the subtitle file.

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sleep 10 & wait $!
2014-09-25 13:33:51
User: yorkou
Functions: sleep wait
Tags: kill loop sleep signals
1
Up
Down
Stoppable sleep

A nice way to interrupt a sleep with a signal.

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find . -iname "*.mp4" -print0 | xargs -0 mv --verbose -t /media/backup/
2014-09-24 18:51:31
User: hochmeister
Functions: find mv xargs
1
Up
Down
find xargs mv
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cd tmp ; find . |cpio -o -H newc| gzip > ../initrd.gz
2014-09-24 14:07:54
User: akiuni
Functions: cd cpio find gzip
Tags: generate initrd
0
Up
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generate an initrd file

This commands compresses the "tmp" directory into an initrd file.

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mkdir tmp ; cd tmp ; zcat ../initrd.gz | cpio -i
2014-09-24 14:06:38
User: akiuni
Functions: cd cpio mkdir zcat
Tags: Linux extract initrd
0
Up
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extract and initrd image

this command extracts an initrd files into the "tmp" directory

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for file in $(find /var/backup -name "backup*" -type f |sort -r | tail -n +10); do rm -f $file; done ; tar czf /var/backup/backup-system-$(date "+\%Y\%m\%d\%H\%M-\%N").tgz --exclude /home/dummy /etc /home /opt 2>&- && echo "system backup ok"
2014-09-24 14:04:11
User: akiuni
Functions: date echo file find rm sort tail tar
Tags: backup Linux cron
0
Up
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10 files backup rotate in crontab

this command can be added to crontab so as to execute a nightly backup of directories and store only the 10 last backup files.

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date -r 1390196676
2014-09-24 10:33:16
User: MacMladen
Functions: date
Tags: Date manipulation macosx date epoch
1
Up
Down
convert unixtime to human-readable

Mac have direct conversion of seconds (Epoch time)

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zcat error.log.gz | sed 's^\[.*\]^^g' | sed 's^\, referer: [^\n]*^^g' | sort | uniq -c | sort -n
2014-09-24 05:26:24
User: zanhsieh
Functions: sed sort uniq zcat
Tags: sort sed uniq zcat
0
Up
Down
Parse compressed apache error log file and show top errors

credit shall fall to this for non-gzipped version:

https://gist.github.com/marcanuy/a08d5f2d9c19ba621399

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for line in `docker ps | awk '{print $1}' | grep -v CONTAINER`; do docker ps | grep $line | awk '{printf $NF" "}' && echo $(( `cat /sys/fs/cgroup/memory/docker/$line*/memory.usage_in_bytes` / 1024 / 1024 ))MB ; done
2014-09-24 04:37:01
User: sammcj
Functions: awk echo grep ps
Tags: memory lxc docker container
1
Up
Down
Show memory usage of all docker / lxc containers
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finger $(whoami) | egrep -o 'Name: [a-zA-Z0-9 ]{1,}' | cut -d ':' -f 2 | xargs echo
2014-09-24 01:22:07
User: swebber
Functions: cut egrep finger xargs
Tags: bash egrep awk regex username awk grep mac os x regexp
0
Up
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Get user's full name in Mac OS X

Its possible to user a simple regex to extract de username from the finger command.

The final echo its optional, just for remove the initial space

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