Lagt till en ny variant av övning 4 samt skrivit reflektion

Labb3/ovning4_file.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+# Jack-Benny Persson
+# LX13
+# Öving 4, labb 3
+
+Arg=$1
+
+# Sanity checks
+if [ $# -ne 1 ]; then
+	echo "Enter a filename as an argument, such as $0 <filename.txt>"
+	exit 1
+fi
+
+if [ ! -e $Arg ]; then
+	echo "$Arg does not exist"
+	exit 2
+fi
+
+# Using _file_ to test the filetype
+Type=`file $Arg | sed "s/$Arg\:\ //"` # Only works for files in CWD because of /
+
+# Print the file type
+echo "$Arg is a $Type file"
+
+exit 0