Is there a Perl version of UNIX "cmp"?
The UNIX "cmp" command is used to compare 2 very large, non-human-readable files to confirm if they are the same, or different. Unlike UNIX "diff", UNIX "cmp" is "large-file-aware" and does not bungle the job when comparing 2 large files as UNIX "diff" is prone to do.

Sample "cmp" operations:

TWO FILES ARE SAME:
> cmp engine_security.a@@/main/par_x_rush_r55.1/2 engine_security.a@@/main/par_x_rush_r55.1/2

> echo $?
0

TWO FILES ARE DIFFERENT:
> cmp engine_security.a@@/main/par_x_rush_r55.1/1 engine_security.a@@/main/par_x_rush_r55.1/2

engine_security.a@@/main/par_x_rush_r55.1/1 engine_security.a@@/main/par_x_rush_r55.1/2 differ: char 29, line 2

> echo $?
1


I work for Motorola, and our Perl coding practices say to avoid qx and system calls to non-Perl functions, in all cases in which a Perl equivalent to a UNIX etc. function can be found.

In reply to Is there a Perl version of UNIX "cmp" ? by Amphiaraus

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