uniq - uniq
NAME SYNOPSIS DESCRIPTION OPTIONSNAME
uniq − uniq
SYNOPSIS
uniq [OPTION]... [INPUT [OUTPUT]]
DESCRIPTION
Report or omit repeated lines.
OPTIONS
|
−D, −−all−repeated[=<delimit−method>] |
print all duplicate lines. Delimiting is done with blank lines. [default: none] [possible values: none, prepend, separate]
|
−−group[=<group−method>] |
show all items, separating groups with an empty line. [default: separate] [possible values: separate, prepend, append, both]
|
−w, −−check−chars <N> |
compare no more than N characters in lines
|
−c, −−count |
prefix lines by the number of occurrences
|
−i, −−ignore−case |
ignore differences in case when comparing
|
−d, −−repeated |
only print duplicate lines
|
−s, −−skip−chars <N> |
avoid comparing the first N characters
|
−f, −−skip−fields <N> |
avoid comparing the first N fields
|
−u, −−unique |
only print unique lines
|
−z, −−zero−terminated |
end lines with 0 byte, not newline
|
−h, −−help |
Print help
|
−V, −−version |
Print version
Filter adjacent matching lines from INPUT (or standard input), writing to OUTPUT (or standard output).
Note: uniq does not detect repeated lines unless they are adjacent. You may want to sort the input first, or use sort −u without uniq.