Technomancy

While poking around I discovered that you can use the stty size command to get the dimensions in columns and rows of the current terminal window.

This little bash functions can help. We have to tell stty what terminal (ie tty) to use. By default it’ll use the stdin, which doesn’t work if you’re chaining commands.

TTY=$(tty)
function rows {
    stty --file=${TTY} size | sed 's/^([0-9]*) ([0-9]*)/1/'
}
function cols {
    stty --file=${TTY} size | sed 's/^([0-9]*) ([0-9]*)/2/'
}

Example usage:

dmesg | tail -n $(( $(rows) - 2 ))

This entry was posted on Wednesday, August 29th, 2007 at 4:16 pm and is filed under cli, bash. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.