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13507 some man pages need update following 13405
6308 some man pages are obsolete after moving to ksh builtins
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COMM(1) User Commands COMM(1)
-
-
NAME
comm - select or reject lines common to two files
SYNOPSIS
comm [-123] file1 file2
-
DESCRIPTION
The comm utility reads file1 and file2, which must be ordered in the
current collating sequence, and produces three text columns as output:
- lines only in file1; lines only in file2; and lines in both files.
+ o lines only in file1;
+ o lines only in file2;
+
+ o lines in both files.
+
If the input files were ordered according to the collating sequence of
the current locale, the lines written will be in the collating sequence
of the original lines. If not, the results are unspecified.
+ If either file1 or file2 is -, comm uses standard input starting at the
+ current location.
+
OPTIONS
The following options are supported:
- -1
- Suppresses the output column of lines unique to file1.
+ -1 Suppresses the output column of lines unique to file1.
+ -2 Suppresses the output column of lines unique to file2.
- -2
- Suppresses the output column of lines unique to file2.
+ -3 Suppresses the output column of lines common to both file1
+ and file2.
-
- -3
- Suppresses the output column of lines duplicated in file1 and
- file2.
-
-
OPERANDS
The following operands are supported:
- file1
- A path name of the first file to be compared. If file1 is -,
- the standard input is used.
+ file1 A path name of the first file to be compared. If file1 is
+ -, the standard input is used.
+ file2 A path name of the second file to be compared. If file1 is
+ -, the standard input is used.
- file2
- A path name of the second file to be compared. If file2 is -,
- the standard input is used.
+EXIT STATUS
+ The following exit values are returned:
+ 0 All input files were successfully output as specified.
-USAGE
- See largefile(5) for the description of the behavior of comm when
- encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
+ >0 An error occurred.
EXAMPLES
Example 1 Printing a list of utilities specified by files
+ If file1, file2, and file3 each contain a sorted list of utilities,
+ the command
- If file1, file2, and file3 each contain a sorted list of utilities, the
- command
+ $ comm -23 file1 file2 | comm -23 - file3
-
- example% comm -23 file1 file2 | comm -23 - file3
-
-
-
-
prints a list of utilities in file1 not specified by either of the
- other files. The entry:
+ other files.
+ The command:
- example% comm -12 file1 file2 | comm -12 - file3
+ $ comm -12 file1 file2 | comm -12 - file3
+ prints a list of utilities specified by all three files; and the
+ command:
+ $ comm -12 file2 file3 | comm -23 -file1
-
- prints a list of utilities specified by all three files. And the entry:
-
-
- example% comm -12 file2 file3 | comm -23 -file1
-
-
-
-
prints a list of utilities specified by both file2 and file3, but not
specified in file1.
-
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables
that affect the execution of comm: LANG, LC_ALL, LC_COLLATE, LC_CTYPE,
- LC_MESSAGES, and NLSPATH.
+ LC_MESSAGES, LC_NUMERIC, and NLSPATH.
-EXIT STATUS
- The following exit values are returned:
+INTERFACE STABILITY
+ The command line interface of comm is Committed. The output of comm is
+ Committed.
- 0
- All input files were successfully output as specified.
-
-
- >0
- An error occurred.
-
-
-ATTRIBUTES
- See attributes(5) for descriptions of the following attributes:
-
-
-
-
- +--------------------+-----------------+
- | ATTRIBUTE TYPE | ATTRIBUTE VALUE |
- +--------------------+-----------------+
- |CSI | enabled |
- +--------------------+-----------------+
- |Interface Stability | Standard |
- +--------------------+-----------------+
-
SEE ALSO
cmp(1), diff(1), sort(1), uniq(1), attributes(5), environ(5),
largefile(5), standards(5)
-
-
- March 3, 2004 COMM(1)
+illumos February 9, 2021 illumos