add manpage and check requirements

1 files changed, 5 insertions, 3 deletions

diff --git a/os1eindopdracht/uhm b/os1eindopdracht/uhm
index 324a863..5d13a13 100755
--- a/os1eindopdracht/uhm
+++ b/os1eindopdracht/uhm
@@ -1,4 +1,4 @@
-#!/bin/dash
+#!/bin/sh
 WORD=""
 DICT="/usr/share/dict/words"
 ARGC=0
@@ -28,11 +28,13 @@ done
 if [ -z "$WORD" ]; then
 	# check if dictionary file exists
 	[ ! -e "$DICT" ] && echo "dictionary file doesn't exist!" && exit 1
+	# check if dictionary file is a regular file (not directory, block device, etc.)
+	[ ! -f "$DICT" ] && echo "dictionary file isn't a regular file!" && exit 1
 	# check if dictionary file contains at least one line
 	[ ! "`wc -l "$DICT" | cut -d' ' -f1`" -gt "0" ] && echo "dictionary file is empty!" && exit 1
 
-	# filter words containing apostrophe or words longer than 12 characters
-	WORD="`sed -e "/'/d" -e '/.\{13\}/d' "$DICT" | sort -R | head -n1`"
+	# filter words containing apostrophe or space, or words longer than 12 characters
+	WORD="`sed -e "/' /d" -e '/.\{13\}/d' "$DICT" | sort -R | head -n1`"
 	# check if word is empty
 	[ -z "$WORD" ] && echo "no usable words found in dictionary" && exit 1
 fi