Created a uniform interface accross all session scripts

session/src/xmd

@@ -1,5 +1,14 @@
 #!/bin/sh
 
+name=`basename "$0"`
+
+usage() {
+	echo "Usage: $name" >&2
+	exit 2
+}
+
+[ "$#" -gt 0 ] && usage
+
 # basic Xmd environment variables
 export XMD_SESSION_PID="$$"
 export XMD_USERDIR="${HOME}/.Xmd"
@@ -23,7 +32,7 @@ appDefaults="${XMD_USERDIR}/app-defaults"
 if [ -d "$appDefaults" ]; then
 	export XAPPLRESDIR="$appDefaults"
 else
-	echo "!!! cant find $appDefaults"
+	echo "$name cant find $appDefaults" >&2
 fi
 xmd-load-wallpaper
 
@@ -33,7 +42,7 @@ if [ -d "$startupDir" ]; then
 	export XMD_STARTUPDIR="$startupDir"
 	xmd-run-startup-items
 else
-	echo "!!! cant find $startupDir"
+	echo "$name cant find $startupDir" >&2
 fi
 
 sleep infinity

session/src/xmd-end-session

@@ -1,7 +1,16 @@
 #!/bin/sh
 
+name=`basename "$0"`
+
+usage() {
+	echo "Usage: $name" >&2
+	exit 2
+}
+
+[ "$#" -gt 0 ] && usage
+
 if [ -z "$XMD_SESSION_PID" ]; then
-	echo "ERR session is not running (\$XMD_SESSION_PID not set)"
+	echo "$name: session is not running (\$XMD_SESSION_PID not set)" >&2
 	exit 1
 fi
 

session/src/xmd-load-wallpaper

@@ -21,6 +21,7 @@ usage() {
 
 [ "$#" -gt 0 ] && usage
 
+echo $configFilePath
 if type "$configFilePath" > /dev/null; then
 	color="black"
 	

session/src/xmd-load-xresources

@@ -1,10 +1,30 @@
 #!/bin/sh
 
-xrdb -remove 
+name=`basename "$0"`
-
 xResources="${XMD_USERDIR}/Xresources"
+
+isInstalled() {
+	type "$1" > /dev/null
+}
+
+mustHaveInstalled() {
+	if ! isInstalled "$1"; then
+		echo "$name: $1 is not installed" >&2
+		exit 1
+	fi
+}
+
+usage() {
+	echo "Usage: $name" >&2
+	exit 2
+}
+
+[ "$#" -gt 0 ] && usage
+
+cd ~
 if [ -r "$xResources" ]; then
+	mustHaveInstalled xrdb
 	xrdb -cpp /usr/bin/cpp < "$xResources"
 else
-	echo "!!! can't find $xResources"
+	echo "$name: can't find $xResources" >&2
 fi

session/src/xmd-run-startup-items

@@ -1,10 +1,19 @@
 #!/bin/sh
 
+name=`basename "$0"`
+
+usage() {
+	echo "Usage: $name" >&2
+	exit 2
+}
+
+[ "$#" -gt 0 ] && usage
+
 if [ -z "$XMD_STARTUPDIR" ]; then
-	echo "!!! \$XMD_STARTUPDIR not set"
+	echo "$name \$XMD_STARTUPDIR not set" >&2
 	exit 1
 fi
-for item in $XMD_STARTUPDIR/*; do
+for item in "$XMD_STARTUPDIR"/*; do
 	if [ -x "$item" ]; then
 		"$item" &
 	fi