Commands by fromthestone

Commands by fromthestone (3)

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SSH Copy ed25519 key into your host
This is sample output - yours may be different.
1

ssh-copy-id -i your-ed25519-key user@host

fromthestone · 2019-04-11 02:23:46 35
Append a pub key from pem file and save in remote server accessing with another key

Useful if you need to add another key and you using pem files (typical in AWS EC2 Instances). If you use it in EC2 instances, remember that password authentication is disabled, so you have to use the first key generated when you generated the instance
This is sample output - yours may be different.
1

ssh-keygen -y -f user-key.pem | ssh user@host -i already_on_remote_server_key.pem 'cat >> ~/.ssh/authorized_keys'

fromthestone · 2019-02-21 08:37:31 33
Delete specific sender in mailq
This is sample output - yours may be different.
1

postqueue -p | tail -n +2 | awk 'BEGIN { RS = "" } / user@example\.com/ { print $1 }' | tr -d '*!' | postsuper -d -

fromthestone · 2015-02-12 01:01:59 9

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Create .pdf from .doc

sudo apt-get install wv tetex-extra ghostscript

See system users

Create a mirror of a local folder, on a remote server

Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

Show contents of all git objects in a git repo

This script finds all git objects and `git cat-file`'s their content. This is really just a helper function to play around with the internals of git repositories. See https://git-scm.com/book/en/v2/Git-Internals-Git-Objects of more info.

Extract neatly a rar compressed file

It's also possible to delay the extraction (echo "unrar e ... fi" |at now+20 minutes) wich is really convenient!

Search trought pidgin's conversation logs for "searchterm", and output the result.

will search trought pidgin conversation logs for "searchterm", and output them stripping the html tags. The "sed" command is optionnal if your logs are stored in plain text format.

directly ssh to host B that is only accessible through host A

Of course you need to be able to access host A for this ;-)

Bash command to convert IP addresses into their "reverse" form

find files containing text

I find this format easier to read if your going through lots of files. This way you can open the file in any editor and easily review the file

Watch the progress of 'dd'

Only slightly different than previous commands. The benefit is that your "watch" should die when the dd command has completed. (Of course this would depend on /proc being available)

Stay in the loop…

Follow the Tweets.

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