1 files changed, 42 insertions, 0 deletions
diff --git a/posix-shell/utils.sh b/posix-shell/utils.sh
index 596263e..4354a37 100644
--- a/posix-shell/utils.sh
+++ b/posix-shell/utils.sh
@@ -216,3 +216,45 @@ url() {
 	# open selected URL in browser
 	firefox "${url}"
 }
+
+lar() {
+	temp="$(mktemp -d)"
+	tar -xf "$1" -C "$temp"
+	pushd "$temp"
+	lf
+	popd
+	rm -rf "$temp"
+}
+
+hexdiff() {
+	if test "$#" -ne 2
+	then
+		echo "Usage: hexdiff <file1> <file2>"
+		return 1
+	fi
+
+	dump1="$(mktemp)"
+	dump2="$(mktemp)"
+
+	hexdump -C "$1" > "$dump1"
+	hexdump -C "$2" > "$dump2"
+
+	diff --unified=4 --color=always "$dump1" "$dump2"
+
+	rm -f "$dump1" "$dump2"
+}
+
+lar() {
+	if test "$#" -ne 1
+	then
+		echo "Usage: lar <archive-file>"
+		return 1
+	fi
+
+	temporary_directory="$(mktemp -d)"
+	tar -xf "$1" -C "$temporary_directory"
+	pushd "$temporary_directory"
+	lf
+	popd
+	rm -rf "$temporary_directory"
+}