• Add colors to the bash: see link


Add the following lines in your ~/.bashrc, or ~/.profile
export TERM=xterm-color
 
export GREP_OPTIONS='--color=auto' GREP_COLOR='1;32'
 
export CLICOLOR=1
and/or
alias ls='ls -G'


Kill process in Linux or terminate a process in UNIX or Linux systems


Instructions on killall here

Kill all processes with the same reg-exp in 1 line


http://operedo.wikispaces.com/Kill+all+processes+with+the+same+reg-exp+in+1+line


Commands of typical use:

df:

du -sh * displayes directory by directory their sizes
(link linux) and (link mac os x) for now use these links

More in detail:

1] How many files do I have?
>> find path/to/directory/ -type f | wc -l
 

2] How much space is taken in each directory?
 >> du -shx

3] Find the files that are larger than 1M?
>> find path/to/directory/ -type f -size 1000k

4] Find the files that are older than 1 year:
>> find path/to/directory/ -type f -mtime +365