MPE/iX Shell and Utilities Reference Manual, Vol 1

cmp(1) MPE/iX Shell and Utilities cmp(1)
NAME
cmp — compare two files
SYNOPSIS
cmp [–blsx] file1 file2 [seek1[seek2]]
DESCRIPTION
cmp compares two files. If either file name is –, cmp reads the standard input for that file. By
default, cmp begins the comparison with the first byte of each file. If you specify seek1 and/or
seek2, cmp uses it as a byte offset into file1 or file2 (respectively), and comparison begins at
that offset instead of at the beginning of the files. The comparison continues (one byte at a
time) until a difference is found, at which point the comparison ends and cmp displays the
byte and line number where the difference occurred. cmp numbers bytes and lines beginning
with 1.
Options
cmp accepts the following options:
–b compares single blocks at a time. Normally, cmp reads large buffers of data into
memory for comparison.
–l causes the comparison and display to continue to the end. cmp displays the byte
number (in decimal) and the differing bytes (in octal) for each difference found. cmp
attempts no resynchronization.
–s suppresses output and returns a non-zero status if the files differ.
–x displays the differing bytes shown by the –l option in hex.
DIAGNOSTICS
Possible exit status values are:
0 The files were identical.
1 The files were not identical.
2 Failure because of an error opening or reading an input file.
Messages
Message: indecipherable seek address "string"
Cause: You specified an invalid seek address.
Action: Specify a valid seek address.
Message: filename: system error
Cause: See syserror(3).
Action: See syserror(3).
Commands and Utilities 1-107