This filter displays the first
count lines of each of the specified files, or of the standard input if no files are specified. If
count is omitted it defaults to 10. If
-c byte_count is specified,
head counts bytes instead of lines.
If more than a single file is specified, or the
-v option is used, each file is preceded by a header consisting of the string “==> XXX ≤=” where “XXX” is the name of the file. The
-q flag disables the printing of the header in all cases.
The
head utility exits 0 on success, and >0 if an error occurs.