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Top 10 Memory Processes (reduced output to applications and %usage only)

Top 10 Memory Processes (reduced output to applications and %usage only) Show Sample Output

ps aux | sort -rk 4,4 | head -n 10 | awk '{print $4,$11}'

n0a110w · 2019-10-20 22:52:55 0

Console clock

You will see it on the corner of your running terminal. Show Sample Output
This is sample output - yours may be different.
```
 Sun Oct 20 05:48:44 JST 2019
```
5

while sleep 1; do tput sc; tput cup 0 $(($(tput cols)-29)); date; tput rc; done &

rakibfiha · 2019-10-19 20:50:48 1
Hide or show Desktop Icons on MacOS

Hides all Files and Folders on the MacOS Desktop. To show files and folders, type "true" instead of "false". "Finder" at the end is case sensitive, "finder" doesn’t work
This is sample output - yours may be different.
1

defaults write com.apple.finder CreateDesktop -bool false;killall Finder

vranx · 2019-10-18 12:13:56 3
Rename all files in a directory to the md5 hash
This is sample output - yours may be different.
2

for i in *; do sum=$(md5sum $i); mv -- "$i" "${sum%% *}"; done

malsploit · 2019-10-17 08:46:22 2
Create file text with ISO Date name. (MAC OS CATALINA / BASH)

Created, tested on MAC OS CATALINA Darwin Kernel Version 19.0.0: Thu Oct 17 16:17:15 PDT 2019; root:xnu-6153.41.3~29/RELEASE_X86_64 x86_64 bash. Show Sample Output
This is sample output - yours may be different.
```
2019-10-13T16:40:12+0200.txt			
2019-10-13T16:44:01+0200.txt
2019-10-13T16:47:13+0200.txt
```
-1

touch `date +%Y-%m-%dT%H:%M:%S%z`.txt

ThinWarrior · 2019-10-13 14:43:22 0
Print the DATE in ISO format.(MAC OS CATALINA / BASH)

Print date in iso format. Created and tested on MAC OS CATALINA. Darwin Kernel Version 19.0.0: Thu Oct 17 16:17:15 PDT 2019; root:xnu-6153.41.3~29/RELEASE_X86_64 x86_64 bash Show Sample Output
This is sample output - yours may be different.
```
2019-10-13T15:49:45+0200
2019-10-13T15:51:31+0200
```
0

date +%Y-%m-%dT%H:%M:%S%z

ThinWarrior · 2019-10-13 13:49:58 4

Works for repos cloned via ssh or https. Show Sample Output

git remote -v | sed -n '/github.com.*push/{s/^[^[:space:]]\+[[:space:]]\+//;s|git@github.com:|https://github.com/|;s/\.git.*//;p}'

bartonski · 2019-10-11 16:50:22 0

List the binaries installed by a Debian package

GNU grep's perl-compatible regular expression(PCRE).
This is sample output - yours may be different.
1

binaries () { dpkg -L "$1" | grep -Po '.*/bin/\K.*'; }

metropolis · 2019-10-05 10:52:15 0
List the binaries installed by a Debian package

This shell function displays a list of binaries contained in an installed package; works on Debian based Linux distributions. Show Sample Output
This is sample output - yours may be different.
```
$ binaries findutils
find
xargs
```
1

binaries () { for f in $(dpkg -L "$1" | grep "/bin/"); do basename "$f"; done; }

lordtoran · 2019-10-05 10:37:51 2
Convert tab separate file (TSV) to JSON with jq

With this command you can convert a tab separate file (TSV) into a JSON file with jq. For example, this input.tsv i-0b9adca882e5e6326 172.16.0.188 i-088dd69e5c3624888 172.16.0.102 i-0e70eac180537d4aa 172.16.0.85 will produce the showed output. Show Sample Output
This is sample output - yours may be different.
```
[
  {
    "id": "i-0b9adca882e5e6326",
    "ip": "172.16.0.188"
  },
  {
    "id": "i-088dd69e5c3624888",
    "ip": "172.16.0.102"
  },
  {
    "id": "i-0e70eac180537d4aa",
    "ip": "172.16.0.85"
  }
]
```
2

cat input.tsv | jq --raw-input --slurp 'split("\n") | map(split("\t")) | .[0:-1] | map( { "id": .[0], "ip": .[1] } )'

nordri · 2019-10-01 10:52:35 0

Top 10 Memory Processes

It displays the top 10 processes sorted by memory usage Show Sample Output

ps aux | sort -rk 4,4 | head -n 10

x3mboy · 2019-09-26 16:37:33 2

edit, view or execute last modified file with a single key-press

Copy this function to command line, press 'Enter' 'f'' 'Enter' to execute (sentence on the left written only for newbies). Hint 'e|x|v|1..9' in front of displayed last modified file name means: "Press 'e' for edit,'x' for execute,'v' for view or a digit-key '1..9' to touch one file from the recent files list to be last modified" and suggested (hidden files are listed too, else remove 'a' from 'ls -tarp' statement if not intended). If you find this function useful you can then rename it if needed and append or include into your ~/.bashrc config script. With the command . ~/.bashrc the function then can be made immediately available. In the body of the function modifications can be made, i.e. replaced joe editor command or added new option into case statement, for example 'o) exo-open $h;;' command for opening file with default application - or something else (here could not be added since the function would exceed 255 chars). To cancel execution of function started is no need to press Ctrl-C - if the mind changed and want to leave simple Enter-press is enough. Once defined, this function can with typeset -f f command be displayed in easy readable form Show Sample Output
This is sample output - yours may be different.
```
knoppix5@kanta:~/SKRIPTE$ f
...
1       rdiff_backup_to_sda3.txt
2       arrange_windows_simple_from_xfce_panel.txt
3       .config.sh
4       arrange_windows.txt
5       read1.sh
6       read3.sh
7       lsb.sh
8       board9.pgn
9       read4.sh
e|x|v|1..9 read4.sh?
```
2

f() { ls -lart;e="ls -tarp|grep -v /|tail -9";j=${e/9/1};g=${e/9/9|nl -nln};h=$(eval $j);eval $g;read -p "e|x|v|1..9 $(eval $j)?" -n 1 -r;case $REPLY in e) joe $h;;v)cat $h;;x) eval $h;;[1-9]) s=$(eval $g|egrep ^$REPLY) && touch "${s:7}" && f;;esac ; }

knoppix5 · 2019-09-26 11:58:37 0

Graphical tree of sub-directories with files

The command finds every item within the directory and edits the output so that subdirectories are and files are output much like the tree command Show Sample Output

find . -print | sed -e 's;[^/]*/;|-- ;g;s;-- |; |;g'

jonavon · 2019-09-25 17:49:35 0

restart Bluetooth from terminal
This is sample output - yours may be different.
-2

$ sudo systemctl restart bluetooth

jadnb · 2019-09-23 19:18:56 0
Hiding ur evil intent! Shame on you!

as a shell script, the possibilities are endless... #!/bin/bash echo doing something very evil! exit [2Aecho doing something very nice! Show Sample Output
This is sample output - yours may be different.
```
$ doing something very nice!
```
-1

echo 'doing something very evil' >/dev/null && echo doing something very nice!

LyscmdFUer · 2019-09-20 12:47:19 1
Write shell script without opening an editor

In this example, I’m creating a wrapper for apt-get that assumes yes every time — but the command could be anything.
This is sample output - yours may be different.
-1

sudo su -c “echo -e \”\x23\x21/usr/bin/sudo /bin/bash\napt-get -y \x24\x40\” > /usr/bin/apt-yes”

realkstrawn93 · 2019-09-19 16:28:33 0
Create backup copy of file, adding suffix of the date of the file modification (NOT today's date)

If your `date` command has `-r` option, you don't need `stat`
This is sample output - yours may be different.
3

cp file{,.$(date -r file "+%y%m%d")}

brx75x · 2019-09-19 09:42:38 0
Write a bootable Linux .iso file directly to a USB-stick

Writes hybrid ISO directly to USB stick; replace /dev/sdb with USB device in question and the ISO image link with the link of your choice
This is sample output - yours may be different.
4

wget -O /dev/sdb https://cdimage.ubuntu.com/daily-live/current/eoan-desktop-amd64.iso

realkstrawn93 · 2019-09-19 04:03:13 0
Check difference between two file directories recursively
This is sample output - yours may be different.
4

diff <(tree /dir/one) <(tree /dir/two)

redraw · 2019-09-19 01:33:08 1
Bitcoin Brainwallet Private Key Calculator
This is sample output - yours may be different.
0

(read -r passphrase; b58encode 80$( brainwallet_exponent "$passphrase" )$( brainwallet_checksum "$passphrase" ))

Jacki188 · 2019-09-15 21:31:52 0
Rsync using SSH and outputing results to a text file

--delete will delete copies on remote to match local if deleted on local --stats will output the results -z zip -a archive -A preserve ACL -x don't cross filesystem boundaries -h human readable -e specify the remote shell to use
This is sample output - yours may be different.
2

rsync --delete --stats -zaAxh -e ssh /local_directory/ username@IP_of_remote:/Remote_Directory/ > /Text_file_Directory/backuplog.txt

chicagonpg · 2019-09-10 21:00:29 0
Get a list of stale AWS security groups

AWS provides a method to audit for obsolete AWS security groups. From their documentation: "Describes the stale security group rules for security groups in a specified VPC. Rules are stale when they reference a deleted security group in a peer VPC, or a security group in a peer VPC for which the VPC peering connection has been deleted." Show Sample Output
This is sample output - yours may be different.
```
aws ec2 describe-stale-security-groups --vpc-id vpc-cafebabe
{
    "StaleSecurityGroupSet": []
}
aws ec2 describe-stale-security-groups --vpc-id vpc-babebabe123414
{
    "StaleSecurityGroupSet": []
}
aws ec2 describe-stale-security-groups --vpc-id vpc-095ce7acd7e772170
{
    "StaleSecurityGroupSet": []
}
aws ec2 describe-stale-security-groups --vpc-id vpc-face1358
{
    "StaleSecurityGroupSet": []
}
```
0

aws ec2 describe-vpcs --query 'Vpcs[*].VpcId' --output text |xargs -t -n1 aws ec2 describe-stale-security-groups --vpc-id

vocatan · 2019-09-09 18:54:08 0
Create backup copy of file, adding suffix of the date of the file modification (NOT today's date)
This is sample output - yours may be different.
1

cp file{,.$(date -d @$(stat -c '%Y' file) "+%y%m%d")}

rgawenda · 2019-09-09 11:49:28 0
Perform Real-time Process Monitoring Using Watch Utility
This is sample output - yours may be different.
6

watch -n 1 'ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head'

wuziduzi · 2019-09-08 06:06:08 0
Rotate a video file by 90 degrees CW

Change video orientation in metadata only
This is sample output - yours may be different.
1

ffmpeg -i in.mov -c copy -metadata:s:v:0 rotate=90 out.mov

unixmonkey100988 · 2019-09-07 08:16:33 0
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What's this?

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Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Go to directory or creat it and go to

For use in scripts this command is very usefull

Turn shell tracing and verbosity (set -xv) on/off with 1 command!

Turn shell tracing and verbosity (set -xv) on/off in any Bourne-type shell If either -x or -v is set, the function turns them both off. If neither is on, both are turned on.

ps a process keeping the header info so you know what the columns of numbers mean!

USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1828 0.0 0.0 5396 476 ? Ss 2008 0:00 /usr/sbin/sshd

grep -v with multiple patterns.

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

list all file extensions in a directory

If your grep doesn't have an -o option, you can use sed instead.

convert a mp4 video file to mp3 audio file (multiple files)

Extract the contents of an RPM package to your current directory without installing them.

This assumes you have the 'rpm', 'rpm2cpio' and 'cpio' packages installed. This will extract the contents of the RPM package to your current directory. This is useful for working with the files that the package provides without installing the package on your system. Might be useful to create a temporary directory to hold the packages before running the extraction: $ mkdir /tmp/new-package/; cd /tmp/new-package

Make directory including intermediate directories

This will create the intermediate directories that do not exist. I did not know about this for a long time.

Show sorted list of files with sizes more than 1MB in the current dir

no fancy grep stuff here.

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