damblocks

My Simple bar script for displaying status information in river and dwl.

Fork of sbar. Written in POSIX SHELL.

Features

• Modules update with variable timing.
• Signalling to update modules when needed.

Usage

Start in river with my build of dam:

# https://codeberg.org/unixchad/dam
# https://github.com/gnuunixchad/dam
riverctl spawn "${HOME}/.local/bin/dam-run"

(dam-run)

Start in my build of dwl:

# https://codeberg.org/unixchad/dwl
# https://github.com/gnuunixchad/dwl
alias dl="exec ssh-agent ${HOME}/.local/bin/damblocks | /usr/local/bin/dwl"

Dependency

depends: ttf-nerd-fonts-symbols wireplumber brightnessctl coreutils sed grep awk curl

suggests: dash bluez-utils isync newsboat calcurse mpc wob

Every function that supports signaling depends on one or more of:

1. my personal scripts (~/.local/bin/)
2. cronjobs (~/.config/crontab.example)
3. udev rules (/etc/udev/rules)

Specific dependencies are listed in the SIGNALING session in this script

All scrips/cronjobs/rules are available on codeberg and github

Modification

• Add bar module as a function. Make sure to assign it to a variable.

update_cpu () { 
	cpu="$( grep -o "^[^ ]*" /proc/loadavg )" 
}

• Modify display function to change the positioning of output.

	xsetroot -name " [$weather] [$memory $cpu] [$bat] [$backlight] [$vol] $time "
}

You can use printf instead of xsetroot to feed it into some other bar like lemonbar.

• If signalling needed then add

trap "update_cpu;display" "RTMIN+6"

• this will update cpu when signal 40=34+6 is given to the script (RTMIN = 34)
• to update it from external commands

kill -40 "$(cat ~/.cache/pidofbar)"

• Example from my sxhkrc

{XF86AudioRaiseVolume,XF86AudioLowerVolume}
	pulsemixer --change-volume {+,-}5 ; \
	kill -34 "$(cat ~/.cache/pidofbar)"

• Add the update information in the while loops as follows

To update item ever 60 seconds with an offset of 2 seconds.