bash Archives - WithoutInk

How To Auto Login to an SSH Connection with Terminal

May 5, 2009 By Matt 1 Comment

I love shortcuts – basically anything that help increase productivity. If you are like me, and need to connect to many different servers and or remote terminals, this one is for you. Before when I SSH’d I would open Terminal and type ssh [email protected] then enter the password at the prompt. Now I just type sshmt and it logs me into my MediaTemple server. Here is how I got it to work…

How To Auto Login to an SSH Connection with Terminal

1. Open Terminal
2. cd to your home dir
3. Type: pico .bashrc
4. Create an alias in the file: alias s='ssh -2 -p 22 [email protected]' replace “s” with whatever alias you want. remember I used sshmt
5. Save the file
6. Reload the bashrc file: source .bashrc

Now we need to create a keypair to authenticate with

7. In Terminal Type: ssh-keygen Press enter when asked, you dont want to generate a passphrase
8. Type: scp -P 22 ~/.ssh/id_rsa.pub user@host:~/ replacing user and host with your info.
9. Now log on to the remote machine: ssh -p 22 user@host
10. Create the .ssh directory: mkdir .ssh
11. Append keys to file: cat id_rsa.pub >> ~/.ssh/authorized_keys
12. Delete the public key: rm -f id_rsa.pub
13. Log off the SSH connection: exit

Now test the connection: ssh -2 -p 22 user@host it shouldn’t prompt you for a password. You now also can use the alias you created above!

Matt

Matt is a Systems Development Director for a multinational franchise. Matt has lived and worked in Hawaii, Chicago, South Florida and currently resides outside of Atlanta. He enjoys his hobbies including Technology, Gadgets/EDC, Fountain Pens, Wetshaving, Clocks, Antiques & Coffee. He even roasts his own coffee weekly.

withoutink.com

Bashrc Example

April 30, 2009 By Matt 1 Comment

I was recently looking for some examples of a bashrc file. I figured I would post my current .bashrc file….

# ~/.bashrc: executed by bash for non-login shells.

##############
# Bash Prompts #
#############

# [12:34] ~/desktop $
export PS1=”\[[\A]\] \w $ ”

umask 022

#######################
# setting up file completion #
######################

if [ -f ~/.bash_completion ];
then
. ~/.bash_completion;
fi

############
# My Aliases #
############

#alias ll=’ls -lagh’

# see full listings with the ls cmd
alias ll=’ls -l’

# see full listings with the ls cmd (including hidden files)
alias la=’ls -a’

# move a file
alias move=’mv’

# copy a file
alias copy=’cp’

# rename a file
alias ren=’mv’

# delete a file (interactive mode)
alias del=’rm -i’

# clear the shell
alias cls=’clear’

# flush the dns cache
alias flushdns=’dscacheutil -flushcache’

# delete a file (interactive mode)
alias rm=’rm -i’

# drive space in MB instead of KB
alias df=’df -h’

# twitter (withoutink)
alias twwi=’/Users/Matt/twwi.sh$1′

alias l=’ls -lagh’
alias grep=’grep -n’
alias netconns=’netstat -a -f inet’
alias cd..=’cd ..’
alias ~=’cd ~’
alias dt=’cd ~/desktop’
alias ..=’cd ..’
alias …=’cd ../..’
alias ….=’cd ../../..’
alias …..=’cd ../../../..’
alias bye=’logout’

################
# history handling #
################

# Erase duplicates
export HISTCONTROL=erasedups

# resize history size
export HISTSIZE=5000

# append to bash_history if Terminal.app quits
shopt -s histappend

##################
# `ls’ to be colorized #
##################

export CLICOLOR=’true’
export LSCOLORS=”gxfxcxdxbxegedabagacad”

###########
# Mac Ports #
##########

# Setting PATH for MacPython 2.5
# The orginal version is saved in .bash_profile.pysave
PATH=”/Library/Frameworks/Python.framework/Versions/Current/bin:${PATH}”
export PATH

##
# Your previous /Users/Matt/.bash_profile file was backed up as /Users/Matt/.bash_profile.macports-saved_2009-04-21_at_19:52:45
##

# MacPorts Installer addition on 2009-04-21_at_19:52:45: adding an appropriate PATH variable for use with MacPorts.
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
# Finished adapting your PATH environment variable for use with MacPorts.

# MacPorts Installer addition on 2009-04-21_at_19:52:45: adding an appropriate MANPATH variable for use with MacPorts.
export MANPATH=/opt/local/share/man:$MANPATH
# Finished adapting your MANPATH environment variable for use with MacPorts.

Matt

withoutink.com

How To Use Twitter from Terminal

April 29, 2009 By Matt Leave a Comment

I was scrubbing the internets a few nights ago and stumbled upon a way to Tweet from the Terminal. Here is a simple way to get started. Please note this method is not the most secure, since you have to hard code a script with your user / pass.

How To Use Twitter from Terminal

1. In Terminal type: curl -u username:password -d status="message" http://twitter.com/statuses/update.xml obviously change your user/pass and replace message with your tweet.

Now lets create a file to call that a bit quicker…

2. Open a text editor, type the following code and save it as twitter.sh (or whatever you prefer just make sure it ends in .sh):
#!/bin/bash curl -u username:password -d status="$1" http://twitter.com/statuses/update.xml

3. I dropped this script in my home directory ~

4. Change the chmod to 777, type the following in Terminal:
chmod 777 /path/to/twitter.sh

Now you can just type: ./path/to/twitter.sh "Message" replacing message with your tweet.

But we can still make it easier!

5. In terminal type: alias twitter=”/path/to/the/file/twitter.sh $1? this creates an alias to make tweeting from terminal easier. Also feel free to change alias twitter to any other alias you wish (twit, tw, tweet, etc).

Now you can type this in the Terminal: twitter "whatever you teet is"

Another helpful hint…
If you have multiple accounts on Twitter like I do. You can make a few different files – see step #2. Make sure to save each one with a different name. Also don’t forget to create additional aliases for these files. (My aliases are twwi, twtf, twrb).

Matt

withoutink.com