Börjat på övning 3, labb 4

Labb4/ovning3_ver1.sh

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+#!/bin/bash
+
+# Jack-Benny Persson
+# LX13
+# Övning 3, version1, labb 4
+# Replace and count words 
+
+# Define some variables
+File="$1"
+Old="$2"
+New="$3"
+
+# Sanity checks
+if [ $# -ne 3 ]; then
+	echo "Usage $0 <filename> <old_word> <new_word>"
+	exit 2
+fi
+
+if [ ! -r $File ]; then
+	echo "We can't read that file"
+	exit 2
+fi
+
+# Main script
+Data=`cat $1`
+Alt=${Data/$Old/$New}
+
+echo "$Alt"
+
+exit 0

Labb4/test.txt

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+Test jag hej
+Ny rad