Add shell functions to get most recent file in a directory

.alias

@@ -13,6 +13,21 @@ alias afs-auth='kinit smay@MPA-GARCHING.MPG.DE && aklog mpa-garching.mpg.de'
 
 alias touch-r='find . -type f -exec touch "{}" +'
 
+nth-last() {
+	num=1
+	if [ -n "$1" ]; then
+		num="$1"
+	fi
+	tail -"$num" | head -1
+}
+newest-file() {
+	num=1
+	if [ -n "$2" ]; then
+		num="$2"
+	fi
+	realpath -m --relative-base=. "$1"/$(ls -1rt "$1" | nth-last "$num")
+}
+
 # SLURM aliases
 alias      sq='squeue -o "%.8Q %.8i %16j %7u %2t %.16V %.16S %.8M %.3D         %R" -S "-t,-Q,i"'
 alias sq-long='squeue -o "%.8Q %.5i %63j %7u %2t %.16V %.16S %.8M %.3D         %R" -S "-t,-Q,i"'