Now let's really get into subroutines. To do this we will use more of the tput commands:
tput cup <row><col> # moves the cursor to row, col tput cup 0 0 # cursor to the upper left hand side tput cup $LINES $COLUMNS # cursor to bottom right hand side tput clear # clears the terminal screen tput smso # bolds the text that follows tput rmso # un-bolds the text that follows
Here is the script. This was mainly written to show the concept of a subroutine, however, it can also be used as a guide on writing interactive tools.
#!/bin/sh
# 6/13/2017
# script4
# Subroutines
cls()
{
tput clear
return 0
}
home()
{
tput cup 0 0
return 0
}
end()
{
let x=$COLUMNS-1
tput cup $LINES $x
echo -n "X" # no newline or else will scroll
}
bold()
{
tput smso
}
unbold()
{
tput rmso
}
underline()
{
tput smul
}
normalline()
{
tput rmul
}
# Code starts here
rc=0 ...