matmrosko.com » bash

Metallica – One-liner

mat — Wed, 16 Jan 2008 19:32:57 +0000

I use Metallica one-word song titles as hostnames on my PCs, so to easily look through my MP3s to find 1-word song titles, I used this gem:

ls * | sed -n 's/^.. - $[^ ]*$.mp3$/\1/p' | sort -u

Auto SSH Key

mat — Wed, 31 Oct 2007 05:49:36 +0000

This small script (basically a one-liner) will transfer your public ssh key (if in standard ~/.ssh/id_dsa.pb) and properly set permissions to the host passed as the first argument. This makes it so the only time you need your password (if using a passphrase-less ssh-key) will be when running this script. After that, you will have your ssh key access done automatically!

Example:
user@host1 ~ $ sshme user@some.domain.com
user@some.domain.com’s password:
user@host1 ~ $ ssh user@some.domain.com
Last login: Tue Oct 30 22:47:42 2007 from ipXX.XXX.XXX.XXX
user@some.domain.com ~$

The sshme script:

#!/bin/bash

cat ~/.ssh/id_dsa.pub | ssh $1 \
"mkdir -p ~/.ssh; \
 cat - >> ~/.ssh/authorized_keys; \
 chmod u+rwx ~ ~/.ssh; \
 chmod go-rw ~ ~/.ssh; \
 chmod 600 ~/.ssh/authorized_keys"

FTP Sync

mat — Wed, 31 Oct 2007 05:44:52 +0000

This script is useful to mirror a directory over FTP. I find this useful when I am working on web changes on an account I do not have SSH access or VIM. I have plans to add getopt support for more functionality. As of now, most of it is controlled via the environment variables found at the top.

Example usage for uploading local mirror:
$ ftpsync up /subdirectory/on/mirror