A minimal command-line "fetch-like" utility.

mfetch

#!/usr/bin/env bash

# Since I hop between similar ssh hosts,
# the colorful border tells me where I've landed.
# It's based on hostname lenght and cycles through 
# the basic 8 ANSI colors, minus the black.
#
# Usage:
# $ mfetch            ---    full color
# $ mfetch plain      ---    colorless border
# $ mfetch mono       ---    black and white

#[ "$TERM" = "linux" ] && exit

NAME=("Uptime" "Root" "Home" "Memory")

LINE[0]=$(uptime -p |
	sed 's/^up //; s/hour/hr/; s/minute/min/' |
	awk '{print $0}')

LINE[1]=$(df -h |
	awk '/\/$/ {print $3 " / " $2}')

LINE[2]=$(df -h |
	awk '/\/home$/ {print $3 " / " $2}')

LINE[3]=$(free -h |
	awk '/^Mem/ {print $3 " / " $2 "\n"}' | sed 's/i//g')

HOST="$(hostname)" L=${#HOST}

while [ "$L" -gt 7 ]
do
	L=$((L - 7))
done

L=$((L + 30)) L="\033[0;${L}m"

A=("\033[1;36m" "\033[0;37m") B=("\033[1;40;32m" "\033[0;40;37m") R="\033[0m"

[ -n "$1" ] && [ "$1" = "plain" ] && L="\033[0m"
[ -n "$1" ] && [ "$1" = "mono" ] && L="\033[0m" A= B=

printf "${L}%s%28s%s${R}\n" " ╔" "[${HOST}]" "╗" | sed 's/ /═/g; s/═/ /'

for ((i = 0; i < ${#LINE[@]}; i++))
do

	if [ ! "${LINE[$i]}" = "" ]
	then
		C=(${A[@]}) A=(${B[@]}) B=(${C[@]})

		printf " ${L}%s${C[0]} %-6s" "║" "${NAME[$i]}"

		printf "${C[1]}%20s ${L}%s${R}\n" "${LINE[$i]}" "║"
	fi
done

printf "${L}%s${R}\n\n" " ╚════════════════════════════╝"

tmux ls 2>/dev/null |
	grep -cv "attached" |
	awk '{
	if ($0 == 1) print "There is 1 detached tmux session."
	else if ($0 > 1) print "There are " $0 " detached tmux sessions."
	}'