Linux diff命令(比较两个文件或目录的内容差异)
diff
命令在Linux中用来比较两个文件或两个目录的内容差异。如果比较的是文件,则比较的是文件的各行内容。如果比较的是目录,则diff会比较两个目录中同名文件的差异。
以下是diff
命令的基本用法:
- 比较两个文件:
diff file1.txt file2.txt
- 比较两个目录:
diff dir1 dir2
- 以并排格式显示差异(每个文件占一行):
diff -y file1.txt file2.txt
- 忽略空格和制表符:
diff -b file1.txt file2.txt
- 只报告文件是否相异,不显示具体差异:
diff -q file1.txt file2.txt
- 使用不同的对比程序,例如
vimdiff
来显示差异:
diff -D file1.txt file2.txt
- 生成差异的patch文件:
diff -Naur old_directory new_directory > diff_result.patch
- 应用patch文件:
patch old_directory < diff_result.patch
这些是diff
命令的基本用法,具体使用哪种取决于你的需求。
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