Linux

Favorite Commands:

• find . -type f -exec grep -n "foo" {} /dev/null \; # search regular files for "foo" inside...printing "path/filename:line:content"
• find . -type f -exec ls -hlatr {} \; | sort -hk5,5 # long list all files under a directory, sort smallest to largest (human size)
• rm -rf foo # remove a directory "foo" and all content
• awk -F'foo' '{print $number}' # print the column (number) delimited by "foo"
• locate foo # print the path/filename of file name matching "foo"
• less -S foo # pager with no line wrap
• du -h -d1 | sort -h # disk usage (human size)...group/sum one level deep and sort smallest to largest
• wget foo # get a file from http/ftp
• scp foo username@hostname:/tmp # put "foo" to location
• scp username@hostname:/tmp/foo . # get "foo" from location
• cat foo # display contents of file "foo"
• vi foo # edit/view file "foo"
• echo $foo # display contents of variable "foo"
• >foo # zeros out file "foo"
• \foo # unalias command "foo"