head(1) [sunos man page]
head(1) User Commands head(1) NAME
head - display first few lines of files SYNOPSIS
head [-number | -n number] [filename...] DESCRIPTION
The head utility copies the first number of lines of each filename to the standard output. If no filename is given, head copies lines from the standard input. The default value of number is 10 lines. When more than one file is specified, the start of each file will look like: ==> filename <== Thus, a common way to display a set of short files, identifying each one, is: example% head -9999 filename1 filename2 ... OPTIONS
The following options are supported: -n number The first number lines of each input file will be copied to standard output. The number option-argument must be a positive decimal integer. -number The number argument is a positive decimal integer with the same effect as the -n number option. If no options are specified, head will act as if -n 10had been specified. OPERANDS
The following operand is supported: file A path name of an input file. If no file operands are specified, the standard input will be used. USAGE
See largefile(5) for the description of the behavior of head when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). EXAMPLES
Example 1: Writing the first ten lines of all files To write the first ten lines of all files (except those with a leading period) in the directory: example% head * ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of head: LANG, LC_ALL, LC_CTYPE, LC_MES- SAGES, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 Successful completion. >0 An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
cat(1), more(1), pg(1), tail(1), attributes(5), environ(5), largefile(5), standards(5) SunOS 5.10 1 Feb 1995 head(1)
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cmp(1) User Commands cmp(1) NAME
cmp - compare two files SYNOPSIS
cmp [-l] [-s] file1 file2 [skip1] [skip2] DESCRIPTION
The cmp utility compares two files. cmp will write no output if the files are the same. Under default options, if they differ, it writes to standard output the byte and line numbers at which the first difference occurred. Bytes and lines are numbered beginning with 1. If one file is an initial subsequence of the other, that fact is noted. skip1 and skip2 are initial byte offsets into file1 and file2 respec- tively, and may be either octal or decimal; a leading 0 denotes octal. OPTIONS
The following options are supported: -l Write the byte number (decimal) and the differing bytes (octal) for each difference. -s Write nothing for differing files; return exit statuses only. OPERANDS
The following operands are supported: file1 A path name of the first file to be compared. If file1 is -, the standard input will be used. file2 A path name of the second file to be compared. If file2 is -, the standard input will be used. If both file1 and file2 refer to standard input or refer to the same FIFO special, block special or character special file, an error results. USAGE
See largefile(5) for the description of the behavior of cmp when encountering files greater than or equal to 2 Gbyte (2**31 bytes). EXAMPLES
Example 1: Comparing files byte for byte The following example: example% cmp file1 file2 0 1024 does a byte for byte comparison of file1 and file2. It skips the first 1024 bytes in file2 before starting the comparison. ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of cmp: LANG, LC_ALL, LC_CTYPE, LC_MES- SAGES, and NLSPATH. EXIT STATUS
The following error values are returned: 0 The files are identical. 1 The files are different; this includes the case where one file is identical to the first part of the other. >1 An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
comm(1), diff(1), attributes(5), environ(5), largefile(5), standards(5) SunOS 5.10 1 Feb 1995 cmp(1)