add field to print newline

change where hostname is read.

README.md

@@ -1,8 +1,20 @@
-<h2 align="center">fet.sh</h1>
-
-
 <div align="center">
+<h1>fet.sh</h1>
 fetch written in POSIX shell with no external commands
 <br>
 <img src="screenshot.png" width="250px">
 </div>
+
+### Installing
+**Arch:** [fet.sh-git](https://aur.archlinux.org/packages/fet.sh-git/) (AUR)  
+**Other Distros:** copy `fet.sh` to somewhere in $PATH
+
+### Customization
+`fet.sh` can be configured using environment variables, for example:
+```
+$ info='n os wm sh n' fet.sh
+```
+Supported options are:
+- `accent` (0-7)
+- `info`
+- `separator`

fet.sh

@@ -99,29 +99,36 @@ read -r model < /sys/devices/virtual/dmi/id/product_name
 [ -d /var/db/pkg ] && set -- /var/db/pkg/*/*
 [ $# -gt 0 ] && pkgs=$#
 
-print() {
+col() {
-	[ "$2" ] && printf '\033[3%sm%6s\033[0m ~ %s\n' "${accent:-4}" "$1" "$2"
-}
-
-
-echo
-read -r host < /etc/hostname
-printf '%7s@%s\n' "$USER" "$host"
-
-print os "$ID"
-print sh "${SHELL##*/}"
-print wm "$wm"
-print up "$up"
-print gtk "${gtk# }"
-print cpu "$vendor $cpu"
-print mem "${mem}MB"
-print host "$model"
-print kern "$kernel"
-print pkgs "$pkgs"
-print term "$term"
-
 	printf '  '
 	for i in 1 2 3 4 5 6; do
 		printf '\033[9%sm▅▅' "$i"
 	done
-printf '\033[0m\n\n'
+	printf '\033[0m\n'
+}
+
+print() {
+	[ "$2" ] && printf '\033[9%sm%6s\033[0m%b%s\n' \
+		"${accent:-4}" "$1" "${separator:- ~ }" "$2"
+}
+
+read -r host < /proc/sys/kernel/hostname
+
+for i in ${info:-n user os sh wm up gtk cpu mem host kern pkgs term col n}; do
+	case $i in
+		n) echo;;
+		os) print os "$ID";;
+		sh) print sh "${SHELL##*/}";;
+		wm) print wm "$wm";;
+		up) print up "$up";;
+		gtk) print gtk "${gtk# }";;
+		gpu) print cpu "$vendor $cpu";;
+		mem) print mem "${mem}MB";;
+		host) print host "$model";;
+		kern) print kern "$kernel";;
+		pkgs) print pkgs "$pkgs";;
+		term) print term "$term";;
+		user) printf '%7s@%s\n' "$USER" "$host";;
+		col) col;;
+	esac
+done