head - Displays the beginning of files
head [-c bytes] [-n lines] [file...]
head [-lines] [file...]
Interfaces documented on this reference page conform to industry standards
Refer to the standards(5) reference page for more information about indus-
try standards and associated tags.
The default count is 10.
[Tru64 UNIX] Specifies the number of bytes to display. If the last
byte written is not a newline character, a newline character is
appended to the output.
Specifies the number of lines to display
Works exactly as -n lines. Obsolescent.
Path name of the input file. If you do not specify a file, head reads
The head command copies the standard input to standard output, ending out-
put of each file at the specified point.
The obsolescent form is subject to withdrawal at any time.
The following exit values are returned:
0 Successful completion.
>>0 An error occurred.
1. To display the first 5 lines of a file called test, enter:
head -n 5 test
2. To display the first ten lines of all files (except those with a name
beginning with a period), enter:
The following environment variables affect the execution of head:
Provides a default value for the internationalization variables that
are unset or null. If LANG is unset or null, the corresponding value
from the default locale is used. If any of the internationalization
variables contain an invalid setting, the utility behaves as if none of
the variables had been defined.
If set to a non-empty string value, overrides the values of all the
other internationalization variables.
Determines the locale for the interpretation of sequences of bytes of
text data as characters (for example, single-byte as opposed to multi-
byte characters in arguments and input files).
Determines the locale for the format and contents of diagnostic mes-
sages written to standard error.
Determines the location of message catalogues for the processing of
Commands: cat(1), more(1), pg(1), sed(1), tail(1)