commit 81a0bd3c39a4812e16910bfc588c441a99840976
parent 311828d427ca1f3fe61a5de97ad22a4a6bf84342
Author: Luxferre <lux@ferre>
Date: Thu, 11 Jan 2024 17:16:56 +0200
Added nnstatus-stdout and nnkeys
Diffstat:
4 files changed, 151 insertions(+), 2 deletions(-)
diff --git a/README.md b/README.md
@@ -7,9 +7,11 @@ This is a set of (mostly Linux-specific unless stated otherwise) various useful
- `nnwifi.sh`: easily set up a WiFi connection (depends on `ip`, `iw`, `wpa_supplicant` and `udhcpc`)
- `nnlight.sh`: control laptop screen brightness (depends on `nawk` or other AWK command)
- `nnstatus.sh`: output useful status information to dzen2 panel (Xorg-specific but can be rewritten to use any other panel of your choice, depends on `nawk` or other AWK command, `iw` for WLAN stats, `amixer` for volume controls and xkb-switch for keyboard layout controls)
+- `nnstatus-stdout.sh`: same as `nnstatus.sh` but without interactivity and keyboard layout functionality, suitable for use in dvtm, a4 and other terminal-based tools with configurable status bar, as it just outputs the information line into the stdout
+- `nnkeys.sh`: shell-based multimedia keys manager daemon with a separate configuration file (see `nnkeys.conf` for an example), depends on `evtest`, `pkill` and AWK
## Credits
All scripts in this repo were created by Luxferre starting from 2023 and released into public domain.
-Made in Ukraine.
-\ No newline at end of file
+Made in Ukraine.
diff --git a/nnkeys.conf b/nnkeys.conf
@@ -0,0 +1,22 @@
+# an example config file for nnkeys.sh script
+# the keys are as specified in the evtest output
+# if the command is empty, the line is ignored
+
+# volume control keys
+KEY_VOLUMEUP amixer sset Master playback 5%+
+KEY_VOLUMEDOWN amixer sset Master playback 5%-
+KEY_MUTE amixer sset Master toggle
+
+# playback control keys
+KEY_PLAYPAYSE
+KEY_PREVIOUSSONG
+KEY_NEXTSONG
+
+# brightness control keys
+KEY_BRIGHTNESSDOWN
+KEY_BRIGTNESSUP
+
+# misc keys found e.g. on macbooks
+KEY_SCALE
+KEY_DASHBOARD
+KEY_EJECTCD
diff --git a/nnkeys.sh b/nnkeys.sh
@@ -0,0 +1,52 @@
+#!/bin/sh
+# nnkeys: no-nonsense multimedia keys manager for bare CLI systems
+# Linux-specific, depends on pkill and evtest
+# as well as AWK engine of your choice (nawk or mawk recommended)
+# Usage: nnkeys.sh nnkeys.conf
+# nnkeys.conf lines format (see example in the repo):
+# KEY_* cmd
+# where KEY_* is the identifier from evtest
+# the script is daemonized automatically, just re-run it to reconfigure
+# created by Luxferre in 2024, released into public domain
+
+# static configuration section
+
+DEVICE="/dev/input/event1" # check your path with evtest
+AWK_ENGINE=nawk # change to yours if necessary
+AWK_TMP="/tmp/nnkeys.awk" # temporary awk script location
+NNPID="/tmp/nnkeys.pid" # temporary PID location
+
+# do not change beyond this point unless you know what you're doing
+
+# config file
+CONF="$1"
+
+[[ ! -f "$CONF" ]] && echo "No config file!" && exit 1
+
+# guard from double-launch: kill the previous instance
+
+[[ -f "$NNPID" ]] && pkill -P $(cat $NNPID) && rm -f $NNPID $AWK_TMP
+
+strim() { # string whitespace trimmer
+ local s2 s="$*"
+ until s2="${s#[[:space:]]}"; [[ "$s2" = "$s" ]]; do s="$s2"; done
+ until s2="${s%[[:space:]]}"; [[ "$s2" = "$s" ]]; do s="$s2"; done
+ echo "$s"
+}
+
+# read config and shape the AWK key handler script
+while read -r cline; do
+ [[ "$cline" = \#* ]] && continue # skip comments
+ ckey="${cline%% *}"
+ ccmd="${cline#$ckey}"
+ ccmd="$(strim $ccmd)"
+ [[ -n "$ccmd" ]] && echo "/${ckey}.*value\ 1/{system(\"$ccmd\")}"
+done < $CONF > $AWK_TMP
+
+echo "Config read, daemonizing..."
+
+nohup $SHELL -c "evtest "$DEVICE" | $AWK_ENGINE -f $AWK_TMP" > /dev/null 2>&1 &
+MYPID="$!"
+echo "$MYPID" > $NNPID
+
+echo "Listener started, pid is at $NNPID"
diff --git a/nnstatus-stdout.sh b/nnstatus-stdout.sh
@@ -0,0 +1,74 @@
+#!/bin/sh
+# nnstatus-stdout.sh: no-nonsense status line script (Linux-specific)
+# outputs a single line to stdout, it's up to other scripts what to do with it
+# only depends on awk (I recommend nawk/one-true-awk) to work with POSIX shells
+# and amixer to work with sound and iw to work with wireless networks
+# created by Luxferre in 2024, released into public domain
+
+# configure some parameters here
+AWK_CMD=nawk # your awk engine
+DELIM=' | ' # delimiter between the fields
+SLEEP_INTERVAL=2 # data refresh interval (in seconds)
+BATDEV='BAT0' # battery device indicator, if applicable (unset to disable)
+MIXER_CHAN='Master' # ALSA channel to display
+
+BATDIR="/sys/class/power_supply/$BATDEV"
+
+# helper functions
+
+cpustat() { # returns: Idle NonIdle
+ $AWK_CMD 'NR==1{printf("%u %u", $5+$6, $2+$3+$4+$7+$8+$9)}' /proc/stat
+}
+
+ramstat() { # print used RAM
+ $AWK_CMD '/^MemTotal:/{mt=$2}/^Buffers:/{mb=$2}/^MemFree:/{mf=$2}\
+ /^Cached:/{mc=$2}/^Shmem:/{ms=$2}/^SReclaimable:/{msr=$2}\
+ END{d=mt-mf-mc-msr-mb+ms;if(d<1048576) printf("RAM %4.0fM",d/1024);\
+ else printf("RAM %4.2fG",d/1048576)}' /proc/meminfo
+}
+
+batstat() { # print battery status
+ local bstatus="$(cat $BATDIR/status)"
+ local bpercent="$(cat $BATDIR/capacity)"
+ local cstatus="CHG" # charging by default
+ [ "$bstatus" = "Discharging" ] && cstatus="BAT"
+ printf "%s %03u%%" "$cstatus" "$bpercent"
+}
+
+volstat() {
+ amixer sget $MIXER_CHAN | $AWK_CMD 'BEGIN{acc=0;c=0;con=1}\
+ /\[[0-9][0-9]*\%\]/{for(i=1;i<=NF;i++){\
+ if($i ~ /\[[0-9][0-9]*\%\]/){acc+=int(substr($i,2));c++}\
+ if($i ~ /\[off\]/){con=0}\
+ }}END{printf(con?"VOL %03u%%":"VOL OFF ",int(c>0?acc/c:acc))}'
+}
+
+wlanstat() {
+ local ssid="$(iw dev $1 link | $AWK_CMD '/SSID:/{print $2}')"
+ printf "%s: " "$1"
+ [ -z "$ssid" ] && printf "None" || printf "%s" "$ssid"
+}
+
+CPUFILE='/tmp/nnstatus.cpu'
+[ -e "$CPUFILE" ] && PREVSTAT="$(cat $CPUFILE)" || PREVSTAT="$(cpustat)"
+
+# you can reorder the calls here
+
+# wifi
+wlanstat wlan0
+# ram
+printf "%s" "$DELIM"
+ramstat
+# cpu
+printf "%s" "$DELIM"
+CURSTAT="$(cpustat)"
+printf "%s %s" "$PREVSTAT" "$CURSTAT" | $AWK_CMD 'NR==1{t=$3+$4-$2-$1;i=$3-$1;printf("CPU %03d%%",100*(t-i)/t)}'
+echo "$CURSTAT" > $CPUFILE
+# battery
+[ -n "$BATDEV" ] && [ -d "$BATDIR" ] && printf "%s" "$DELIM" && batstat
+# volume
+printf "%s" "$DELIM"
+volstat
+# clock
+printf "%s\n" "$DELIM$(date +'%a %b %d %H:%M')"
+
