How to open Firefox and additional Firefox tab by bash in a size of x% of display size?

The question is related to bash and Linux like Debian; Ubuntu or Linux Mint.

It's known to open a new firefox window by bash on follow way:

Firefox

It's known to open a new Firefox tab on follow way:

Firefox https://stackoverflow.com

How to open a new Firefox on a size of x% of display size by bash and without awk?

Solution

Open a new Firefox window, with specific size and URL

How I do this, using xdotool and wmctrl:

#!/bin/bash

targetUrl="${1:-https://stackoverflow.com/search?tab=votes&q=user%3A1765658+firefox}"
geometry=1200x900+200+120

mkBound() { local refstr=({0..9} _ {A..Z} = {a..z}) tfmt
    printf -v tfmt %8s
    tfmt=(${tfmt// /%s}{,,}{,}) tfmt=${tfmt[*]} tfmt=${tfmt// /-}
    printf -v bound $tfmt ${refstr[RANDOM%64]}{,,}{,,,}{,,,}
}
mkBound
printf -v ffurl "data:text/html;ascii,<head><title>%s</title></head>" $bound

firefox --new-window "$ffurl"

while ffwin=$(wmctrl -l|sed -ne "/$bound/s/ .*$//gp");[[ -z ${ffwin} ]] ;do
    echo -n .
    sleep .05
done
echo

IFS='+x' read -r width height xpos ypos <<<"$geometry"
xdotool windowraise $ffwin
xdotool windowfocus $ffwin
xdotool windowactivate $ffwin
sleep .8
xdotool windowmove $ffwin $xpos $ypos
xdotool windowsize $ffwin $width $height
xdotool windowactivate $ffwin
sleep .2
xdotool key ctrl+l
xdotool type --delay 22 "$targetUrl"
xdotool key Return

Save this in a script, then run them with an url as argument.

You could replace --new-window by --private-window if needed.

Nota: I use a 48 random chars string as bound to force firefox to title this string in order to ensure wmctrl will find only this window...

For strictly answering about size of x% of display size:

You could replace 4th line:

geometry=1200x900+200+120

by either:

psize=40
while IFS=' +x' read cmd a b c d ;do
    [[ $cmd == -geometry ]] &&
        geometry=$((a*psize/100))+$((b*psize/100))+$c+$d
done  < <(xwininfo -root)

or even...

psize=40
ar=('')
while IFS=' x+' read dev stat a b c d e f; do
    if [[ $stat == connected ]]; then
        typ=sec
        [[ $a == primary ]] &&
            typ=${a::3} a=$b b=$c c=$d d=$e
        printf '%3d: %s (%s)\n' ${#ar[@]} $dev $typ
        ar+=($((a*psize/100))+$((b*psize/100))+$c+$d)
    fi
done < <(xrandr)
read -p 'Wich display: ' -rsn 1 userKey
if [[ ${ar[userKey]} ]]; then
    geometry=${ar[userKey]}
    echo $userKey
else
    echo user abort
    exit 1
fi

You may find a full version on my site (not on github;) using getopts for

Usage: soFirefox [-h] [ -g str | [ [ -p int | [-x int] [-y int] ] [-d str] [URL]
    -d str  Display either 'HDMI-1', 'DP-2', 'secondary', 'root' or 'primary'.
    -g str  Geometry string in format 'WxH+X+Y' (must be alone).
    -h      Show this.
    -p int  Percent of display.
    -x int  Percent width of display.
    -y int  Percent height of display.
    URL     Default to 'https://stackoverflow.com/search?tab=votes&q=user%3A1765658+firefox'.

You can run:

soFirefox -d primary -y 80 -x 60 https://stackoverflow.com/a/75327166/1765658