Commands by symgryph

Commands by symgryph (9)

sorted by

Show all current listening programs by port and pid with SS instead of netstat
This is sample output - yours may be different.
4

ss -plunt

symgryph · 2019-12-09 17:44:55 126
Identify all amazon cloudformation scripts recursively using ripgrep

This assumes you are in the cwd of where you put your s3 scripts. Its useful if someone decides to create aws cloudformation scripts and doesn't add the 'yaml' or .yml extension. Show Sample Output
This is sample output - yours may be different.
```
2019-12-05/1264/123123123/StackSet-MyCoolScriptlimitCheckStack-P9PAO5WIAKQA
2019-12-05/1264/23123231123/ServiceUsageLimitMonitor-20181121-limitMySadness
```
1

rg -l "AWSTemplateFormatVersion: '2010-09-09'" *

symgryph · 2019-12-09 17:43:10 320
Use was ec2 describe instances to retrieve IAM roles for specific ec2 tag to css list

This allows you to get all instance profiles (roles) for a given set of tags. Lists it in CSV Show Sample Output
This is sample output - yours may be different.
```
"arn:aws:iam::111114168247:instance-profile/Yourole-Instance-Profile,i-01ab14691695a0fa1"
```
0

aws ec2 describe-instances --region us-east-1 --filters "Name=tag:YourTag,Values=YourValue" | jq '.["Reservations"]|.[]|.Instances|.[]|.IamInstanceProfile.Arn + "," +.InstanceId'

symgryph · 2019-04-15 16:33:41 35
Use JQ to get a csv list of assets in aws with security groups, names, and ENI ID for tracking VPC Flows from JSON

You need to use the aws ec2 describe instances to get the JSON file. Show Sample Output
This is sample output - yours may be different.
```
"1.1.1.1","sg-9bc42fed","private-my-groupname","eni-81519d01","qa-myserver-1.pholem-earth.com","i-0129e27fa464a213c"
"2.2.2.2","sg-93b42b1c","another-security-group","eni-31c53b29","gc-myadmin-server-2.pholem-earth.com","i-0b5ac9579a692f987"
```
0

cat aws.json | jq -r '.Reservations[].Instances[] | [.PrivateIpAddress, .SecurityGroups[].GroupId,.SecurityGroups[].GroupName,.NetworkInterfaces[].NetworkInterfaceId,(.Tags[] | select(.Key =="Name") | .Value),([.InstanceId| tostring] | join(";"))]|@csv'

symgryph · 2018-08-08 19:22:58 458
Disable sleep mode via cli and systemd (Centos, Debian Ubuntu?)

This causes computer to never power off or go into sleep mode. Disables sleep mode linux.
This is sample output - yours may be different.
3

sudo systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target

symgryph · 2017-04-28 19:49:36 23
Funny way to use cowsay to offend people
This is sample output - yours may be different.
0

fortune | cowsay -f sodomized-sheep

symgryph · 2016-02-07 08:13:56 11
Put files back together after encrypted with tar and ccrypt
This is sample output - yours may be different.
0

cat file.gz.cpt *[a-z] | ccdecrypt -k yoursecretpassword | tar -xzf -

symgryph · 2013-05-10 12:44:12 10
encrypt, split and get ready for dvd a large file via tar and ccrypt
This is sample output - yours may be different.
0

tar czf - /directory/to/tar | ccrypt -k yourpassword | split -b50m - /final/encrypted.cpt

symgryph · 2013-05-10 12:42:47 7
kill process by name

Kills process by name
This is sample output - yours may be different.
-8

killall -9 <processname>

symgryph · 2011-12-09 02:53:46 7

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

Substitute audio track of video file using mencoder

Creates a new video file with video stream copied from input file and a different audio stream

Recursive find and replace file extension / suffix (mass rename files)

Find recursively all files in ~/Notes with the extension '.md' and pipe that via xargs to rename command, which will replace every '.md' to '.txt' in this example (existing files will not be overwritten).

list the top 15 folders by decreasing size in MB

Get free RAM in %

Oneliner to run commands on multiple servers

Oneliner to run commands on multiple servers over ssh. - First parameter "$1" is the command you want to execute remotely. ( It can be multiple commands e.g. "hostname;uptime") - Second parameter "${@:2}" represents the remote host/s you want to run the command/s on.

Fast command-line directory browsing

After typing cd directory [enter] ls [enter] so many times, I figured I'd try to make it into a function. I was surprised how smoothly I was able to integrate it into my work on the command line. Just use cdls as you would cd. It will automatically list the directory contents after you cd into the directory. To make the command always available, add it to your .bashrc file. Not quite monumental, but still pretty convenient.

Copy the contents of one partition to another

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"

list block devices

Shows all block devices in a tree with descruptions of what they are.

Job Control

You're running a script, command, whatever.. You don't expect it to take long, now 5pm has rolled around and you're ready to go home... Wait, it's still running... You forgot to nohup it before running it... Suspend it, send it to the background, then disown it... The ouput wont go anywhere, but at least the command will still run...

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands by symgryph