Ubuntu Terminal Cheat Sheet

VIM: x to delete left. X to delete right

Terminal echo:

\r => Erase everything in the same line before this statement
\n => New Line (Enter)
\t => Indent. Make space 5x
\b => Backspace. Omit/Erase 1 character before this statement
\c => Print the next output in the same line
\033[1m => Bold the text. Everything.
\033[0m => Normal the text.

Terminal tput:

clear => Clear Terminal
lines => Display number of rows on screen (terminal size)
cols => Display number of columns (terminal size)
cup 15 20 => Where on the terminal we want to output a string. It can override existing output
bold => Print in bold. Same with \033[1m

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echo $?
0 => Success
1 => Failed
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echo "Enter source and target file names."
read source target
mv $source $target

Terminal if-then:
if 0
then
echo "Your file success"
elif => else if
then
else
fi (closure for if-then-else statement)

Terminal Count:

Check number input between:
[ $<variable> -lt 10 ]
lt => less than
gt => greater than
le => less than and equal to
ge => more than and equal to
ne => not equal to
eq => equal to
must have space after [ and before ]

Terminal run check on files:

if [ -f $<variable file name> ] => 0 if file. 1 if folder
-f => file
-d => directory (folder)
-c => character special file
-b => blok/image/video file
-r => Check read permission
-w => Write permission
-x => Execute permission
-s => Size of file
-z => Check null. If null, return 0
-n => Check if more than 0. If more than 0, return 0
-a => AND Logical Operator
-o => OR Logical Operator