diff.md 898 B
Name
diff - compare files line by line
Synopsis
$ diff [options...] [files...]
Description
Compare files line by line.
Arguments
files: files to compare ex:file1 file2
Options
-u,-U <context>,--unified <context>: Write diff in unified format with<unified>number of surrounding context lines (default 3).-c,-C <context>,--context <context>: Write diff in context format with<context>number of surrounding context lines (default 3).
Examples
First we create two files to compare:
$ printf '1\n2\n3\n' > file1
$ printf '1\nb\n3\n' > file2
Here's how to view differences between the two files in normal format:
$ diff file1 file2
2c2
< 2
---
> b
Here's how to view differences between the two files in unified format:
$ diff -u file1 file2
--- file1
+++ file2
@@ -1,3 +1,3 @@
1
-2
+b
3