uniq.1
来自「Unix操作系统minix 2.0源码」· 1 代码 · 共 60 行
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60 行
UNIQ(1) Minix Programmer's Manual UNIQ(1)
NAME
uniq - delete consecutive identical lines in a file
SYNOPSIS
uniq [-cdu] [-n] [+n] [input [output]]
OPTIONS
-c Give count of identical lines in the input
-d Only duplicate lines are written to output
-u Only unique lines are written to output
-n Skip the first n columns when matching
+n Skip the first n fields when matching
EXAMPLES
uniq +2 file # Ignore first 2 fields when comparing
uniq -d inf outf # Write duplicate lines to outf
DESCRIPTION
Uniq examines a file for consecutive lines that are identical. All but
duplicate entries are deleted, and the file is written to output. The +n
option skips the first n fields, where a field is defined as a run of
characters separated by white space. The -n option skips the first n
spaces. Fields are skipped first.
SEE ALSO
sort(1).
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