dircmp Command

Purpose

Compares two directories and the contents of their common files.

Syntax

dircmp [ -d ] [ -s ] [ -w num ] Directory1 Directory2

Description

The dircmp command compares the two directories specified by the Directory1 and Directory2 parameters and writes information about their contents to standard output. First, the dircmp command compares the file names in each directory. If the same file name appears in both, the dircmp command compares the contents of both files.

In the output, the dircmp command lists the files unique to each directory. It then lists the files with identical names in both directories, but with different contents. If no flag is specified, it also lists files that have identical contents as well as identical names in both directories.

The diff -r command offers a function similar to the dircmp command.

Flags

Item	Description
-d	Displays for each common file name both versions of the differing file contents. The display format is the same as that for the diff command.
-s	Does not list the names of identical files.
-w num	Change the width of the output to num number of characters.

Exit Status

This command returns the following exit values:

Item	Description
0	Successful completion.
>0	An error occurred.

Note: Differences in directory contents are not considered errors.

Examples

To summarize the differences between the files in two directories, type the following:
```
dircmp proj.ver1 proj.ver2
```
This displays a summary of the differences between the directories proj.ver1 and proj.ver2. The summary lists separately the files found only in one directory or the other, and those found in both. If a file is found in both directories, the dircmp command notes whether the two copies are identical.
To show the details of the differences between files, type the following:
dircmp -d -s proj.ver1 proj.ver2
The -s flag suppresses information about identical files. The -d flag displays a diff listing for each of the differing files found in both directories.
To show the details of the differences between files with the width of the output line set to 90 characters, type the following:
```
$dircmp -w 90 dir1 dir2
```

Files

Item	Description
/usr/bin/dircmp	Contains the dircmp command.

Related Information

The cmp command, diff command.

Directories in Operating system and device management describes the structure and characteristics of directories in the file system.

Input and output redirection in Operating system and device management describes how the operating system processes input and output.