This command allows you to see what apps are consuming internet. ss -p

 

This command allows you to see what apps are consuming internet.

ss -p

bash script to timestamp snapshot backups of directory

modified a script from 

http://aaronparecki.com/articles/2010/07/09/1/how-to-back-up-dropbox-automatically-daily-weekly-monthly-snapshots

to be a simplified snapshot copy of the FOLDER and append the date to the folder name. Useful to have an backup on Dropbox since some files might go missing suddenly on shared folders.

#!/bin/bash
#eg.
#sh snapshot.sh FOLDER [go]
# 'go' will execute
path=Snaphotbackup-`date +%m-%b-%y`
# Run with "go" as the second CLI parameter to actually run the rsync command, otherwise prints the command that would have been run (useful for testing)
if [[ "$2" == "go" ]]
then
        rsync -avP --delete $1 $1-$path
else
        echo rsync -avP --delete $1 $1-$path
fi

How does your bash prompt look like?

decided to add color and full path to my bash prompt to make it easier for me to see which ssh window belongs to where absolute life saver at times when you are running several things and the tabs just don't show enough info
Plus having the user@host:/fullpath/folder in your bash prompt makes it easy to copy and paste a 'url' to scp files into that folder directly instead of typing from scratch The only downside to this is if you are buried deep in folders, you are not going to have a lot of screen estate left to type long bash commands without confusing yourself
   
My final choice:

PS1="\[\033[35m\]\t\[\033[m\]-\[\033[36m\]\u\[\033[m\]@\[\033[32m\]\h:\[\033[33;1m\]\w\[\033[m\]\$ "

image from 8 Useful and Interesting Bash Prompts - Make Tech Easier

Source:
8 Useful and Interesting Bash Prompts - Make Tech Easier
http://www.maketecheasier.com/8-useful-and-interesting-bash-prompts/2009/09/04

How to: Change / Setup bash custom prompt (PS1)
http://www.cyberciti.biz/tips/howto-linux-unix-bash-shell-setup-prompt.html

How add new line to start and end of a file, SED / Linux Goodness

saw this usage of sed in the forums posted by ghostdog74

sed '1 i this is first line' file

sed '$ a this is last line' file

link