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pid list by httpd listen port

% lsof -v lsof version information: revision: 4.78
This is sample output - yours may be different.
-1

lsof | awk '/*:https?/{print $2}' | sort -u

sugitaro · 2011-02-04 01:37:17 3
Print RPM dependencies

Needs rpmorphan installed Show Sample Output
This is sample output - yours may be different.
```
filesystem
glibc
glibc-common
libgcc
ncurses-base
ncurses-libs
nss-softokn-freebl
setup
tzdata
```
-1

ruby -e 'puts `rpmdep glibc`.split(",")[2..-1]'

rubiojr · 2011-10-26 16:44:59 4
find and output files content with filtering by filename and specific string
This is sample output - yours may be different.
-1

find . -name *.properties -exec /bin/echo {} \; -exec cat {} \; | grep -E 'listen|properties'

altern · 2014-02-17 02:25:49 7
Make syslog reread its configuration file
This is sample output - yours may be different.
-1

pkill -HUP syslogd

rimaya · 2009-02-09 09:32:06 8
delete a file and links based on inode number.

This command, when run from the directory containing "filename", will remove the file and any hard or symbolic links to the file.
This is sample output - yours may be different.
-1

ls -ai | grep filename | find . -inum `awk '{print $1}'` -exec rm {} \;

YogiBare · 2011-02-04 10:29:54 7
Print the lastest stable version of Perl

This uses wget instead of curl
This is sample output - yours may be different.
-1

wget -q -O - http://www.perl.org/get.html | grep -m1 '\.tar\.gz' | sed 's/.*perl-//; s/\.tar\.gz.*//'

dbbolton · 2011-08-19 23:38:10 3
glance
This is sample output - yours may be different.
-1

glance -m

zjs_cha · 2014-05-27 02:21:10 7
Remove everything except that file

This is a slight variation of an existing submission, but uses regular expression to look for files instead. This makes it vastly more versatile, and one can easily verify the files to be kept by running ls | egrep "[REGULAR EXPRESSION]"
This is sample output - yours may be different.
-1

ls | egrep -v "[REGULAR EXPRESSION]" | xargs rm -v

Saxphile · 2010-04-01 02:40:40 4
MySQL: Find an instance of a populated table across numerous databases

Pulls all instances of table out of information schema, executes a SELECT COUNT(*) on each table/database instance, and then strips out any empty tables. Show Sample Output
This is sample output - yours may be different.
```
sandbox_cathdrwg_client1: 1
sandbox_cathdrwg_client2: 5
sandbox_cathdrwg_client3: 1
```
-1

TABLE_NAME=YYZ ; for DATABASE in $(echo "SELECT TABLE_SCHEMA FROM information_schema.tables WHERE TABLE_NAME='$TABLE_NAME'" | mysql -N) ; do echo -n "$DATABASE: " ; echo "SELECT COUNT(*) FROM $TABLE_NAME" | mysql $DATABASE -N ; done | fgrep -v ': 0'

MutinyEnigmatic · 2011-12-08 16:31:36 3
Reset ownership of a folder/subfolders
This is sample output - yours may be different.
-1

TAKEOWN /A /R /F c:\SomeFolder

mokico · 2013-08-29 01:43:29 13
ps to show child thread PIDs
This is sample output - yours may be different.
-1

ps -efL | grep <Process Name>

tsener · 2014-09-11 16:35:31 8
keytool using BouncyCastle as security provider to add a X509 certificate

This command imports the certificate file cert.pfx into the keystore file, using BouncyCastle as security provider. It was validated using - OpenJDK Runtime Environment (Zulu 8.36.0.1-CA-linux64) - Java(TM) SE Runtime Environment (build 1.8.0_192-ea-b04) - OpenJDK Runtime Environment (build 9.0.4+11) - OpenJDK Runtime Environment 18.9 (build 11.0.2+9) Show Sample Output
This is sample output - yours may be different.
```
keytool -importcert \
    -providerpath bcprov-jdk15on-1.60.jar \
    -provider org.bouncycastle.jce.provider.BouncyCastleProvider \
    -storetype BCPKCS12 \
    -storepass <passphase> \
    -trustcacerts \
    -alias 'aliascert' \
    -file <filename.cer> \
    -keystore keystore
Owner: SERIALNUMBER=XXXXXXXXXX, OU=XXXX, OU=XX, O=XXXXXXXX, C=XX
Issuer: O=XXXXXXX, C=XX
Serial number: XXXXXXXX
...
...
Trust this certificate? [no]:  yes
Certificate was added to keystore
```
-1

keytool -importcert -providerpath bcprov-jdk15on-1.60.jar -provider org.bouncycastle.jce.provider.BouncyCastleProvider -storetype BCPKCS12 -trustcacerts -alias <alias> -file <filename.cer> -keystore <filename>

andresaquino · 2019-02-25 08:39:05 31
Friendly command-not-found message.

This will give you a friendly warning if a command doesn't exists. Show Sample Output
This is sample output - yours may be different.
```
$ aptitypo
...
```
-1

command_not_found_handle() { echo 6661696c626f61742e2e2e0a | xxd -p -r; }

unixmonkey7301 · 2009-12-03 21:33:35 4
Keep SSH tunnel open (PostgreSQL example)

Check if SSH tunnel is open and open it, if it isn't. NB: In this example, 3333 would be your local port, 5432 the remote port (which is, afaik, usually used by PostgreSQL) and of course you should replace REMOTE_HOST with any valid IP or hostname. The example above let's you work on remote PostgreSQL databases from your local shell, like this: psql -E -h localhost -p 3333
This is sample output - yours may be different.
-1

while true; do nc -z localhost 3333 >|/dev/null || (ssh -NfL 3333:REMOTE_HOST:5432 USER@REMOTE_HOST); sleep 15; done

rxw · 2015-09-21 02:25:49 11
keytool using BouncyCastle as security provider to add a PKCS12 certificate store

This command imports the keystore file cert.pfx into the keystore file, using BouncyCastle as security provider. It was validated using - OpenJDK Runtime Environment (Zulu 8.36.0.1-CA-linux64) - Java(TM) SE Runtime Environment (build 1.8.0_192-ea-b04) - OpenJDK Runtime Environment (build 9.0.4+11) - OpenJDK Runtime Environment 18.9 (build 11.0.2+9) Show Sample Output
This is sample output - yours may be different.
```
keytool -importkeystore \
    -providerpath bcprov-jdk15on-1.60.jar \
    -provider org.bouncycastle.jce.provider.BouncyCastleProvider \
    -srckeystore cert.pfx \
    -srcstoretype pkcs12 \
    -srcalias 1 \
    -destkeystore keystore \
    -deststoretype BCPKCS12 \
    -destalias 'mycert'
Importing keystore cert.pfx to keystore...
```
-1

keytool -importkeystore -providerpath bcprov.jar -provider BouncyCastleProvider -srckeystore <filename.pfx> -srcstoretype pkcs12 -srcalias <src-alias> -destkeystore <filename.ks> -deststoretype BCPKCS12 -destalias <dest-alias>

andresaquino · 2019-02-25 08:40:18 30
Quickly create simple text file from command line w/o using vi/emacs

thx Montecristo, thx hckhckhck
This is sample output - yours may be different.
-1

cat > {filename} {your text} [^C | ^D]

sphere64 · 2010-06-03 09:02:12 3
Deleting a remote git branch (say, by name 'featureless')

This will delete the branch 'featureless' on the origin remote. Do not forget to delete the branch locally using: git branch -d featureless 'I got it here'-credit: http://gitready.com/beginner/2009/02/02/push-and-delete-branches.html I duplicated here incase you stumbled here first. Show Sample Output
This is sample output - yours may be different.
```
$ git push origin :featureless
To git@github.com:yourname/yourproject.git
 - [deleted]         featureless
```
-1

git push origin :featureless

b_t · 2011-06-02 14:53:31 3
Check if *hardware* is 32bit or 64bit
This is sample output - yours may be different.
-1

uname -m

wee0x1b · 2013-02-15 17:23:44 4
Return IP Address

Tested on Solaris.
This is sample output - yours may be different.
-1

/usr/sbin/ifconfig -a|awk -F" " 'NR==4{print $2}'

elZaphod · 2009-12-04 18:41:29 4
Show a Package Version on Debian based distribution

If there is update available for the package you can see upgrade is from which version to which version. Also you will get detail about which release the package belongs to (stable/testing/sid). Show Sample Output
This is sample output - yours may be different.
```
apt-show-versions iceweasel 
iceweasel/sid uptodate 3.5.9-3

apt-show-versions kdebase-runtime
kdebase-runtime/sid upgradeable from 4:4.4.3-1 to 4:4.4.4-1
```
-1

apt-show-versions <packagename>

Vasudev · 2010-06-03 15:52:11 4
this svn script will commit all files excluding those with extensions {.project .classpath .properties .sh .number} and those with Status Modified or Added {M or A}
This is sample output - yours may be different.
-1

svn st | grep -e [MA] | egrep -ve '.project|.classpath|.properties|.sh|.number' | awk -F' ' '{ print $2}' | xargs svn ci -m "message"

drunkcoder · 2011-03-10 15:32:36 6
Describe differences between files

Using sed to print newlines as doing it in one line with diff is non-trivial.
This is sample output - yours may be different.
-1

diff --changed-group-format='differs from line %dF to line %dL|' --unchanged-line-format='' $FILE1 $FILE2 | sed 's/|/\n/'

dullgiulio · 2011-06-02 15:04:36 3
execute a shell with netcat without -e

uses fifo and sets to a specific port. In this case 4201.
This is sample output - yours may be different.
-1

mkfifo ._b; nc -lk 4201 0<._b | /bin/bash &>._b;

gt · 2011-08-21 05:22:41 3
Create nthash
This is sample output - yours may be different.
-1

echo -n "password" | iconv -t utf-16le | openssl dgst -md4

damncool · 2011-09-22 16:29:41 3
Tshark to Generate Top Talkers by #TCP conv started per second.

#_connects src_IP dst_IP When_It_Happened_Secs Show Sample Output
This is sample output - yours may be different.
```
 23 208.127.211.141 170.135.216.181 7
  22 67.142.174.23 170.135.216.181 12
  20 157.93.242.50 170.135.216.181 6
  19 67.142.174.23 170.135.216.181 11
  17 67.160.80.189 170.135.216.181 11
  
```
-1

tshark -qr [cap] -z conv,tcp | awk '{printf("%s:%s:%s\n",$1,$3,$10)}' | awk -F: '{printf("%s %s %s\n",$1,$3,substr($5,1,length($5)-10))}' | sort | uniq -c | sort -nr

knassery · 2012-10-16 06:39:01 4
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Show bandwidth use oneliner

poorman's ifstat using just sh and awk. You must change "eth0" with your interface's name.

Sort files in multiple directories by date

This sorts files in multiple directories by their modification date. Note that sorting is done at the end using "sort", instead of using the "-ltr" options to "ls". This ensures correct results when sorting a large number of files, in which case "find" will call "ls" multiple times.

grep -v with multiple patterns.

If you wanted to do all in one command, you could go w/ sed instead

Advanced python tracing

Trace python statement execution and syscalls invoked during that simultaneously

Show the key code for keyboard events include the Fn keys

The keycodes are a result of pressing: Mute (Fn+F1) a

directory size with subdirectories, sorted list

Selecting a random file/folder of a folder

random file from files in directory

Search previous commands from your .bash_history

This is not actually a command, it's just a keyboard shortchut. But a very useful one.

Share your terminal session (remotely or whatever)

Force the user you want to watch doing things into doing his things in a screen session. Then simply attach yourself to that session with the command shown above. Works only if you are on the same machine, of course

use the real 'rm', distribution brain-damage notwithstanding

The backslash avoids any 'rm' alias that might be present and runs the 'rm' command in $PATH instead. In a misguided attempt to be more "friendly", some Linux distributions (or sites/etc.) alias 'rm' to 'rm -i'. Unfortunately, this trains users to expect that files won't actually be deleted until they okay it. This expectation will fail with catastrophic results when they use other distributions, move to other sites, etc., and doesn't really even work 100% even with the alias. It's too late to fix 'rm', but '\rm' should work everywhere (under bash).

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