🖥️uniq

➡️This is a command-line reference manual for commands and command combinations that you don’t use often enough to remember it. This cheatsheet explains the uniq command with important options and switches using examples.

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# show all lines without duplication
# `sort -u` and `uniq` is the same effect.
sort file | uniq

# show not duplicated lines
sort file | uniq -u

# show duplicated lines only
sort file | uniq -d

# count all lines
sort file | uniq -c

# count not duplicated lines
sort file | uniq -uc

# count only duplicated lines
sort file | uniq -dc

#==============================#
# CMD UNIQ 
#==============================##==============================#
uniq -d
# Show which lines are repeated in a sorted file

uniq -cd popular.txt
# This will show a count of all lines that have more than 1 copy. So only show the duplicates. (-d)
# Right. You will want to sort the input to uniq first, so: sort popular.txt | uniq -cd

uniq -c
# Show how many times each line in a sorted file is repeated: uniq -c

#==============================##==============================#
# CMD UNIQ 
#==============================##==============================#

Cheatsheets are an excellent complement to other information sources like Linux man-pages, Linux help, or How-To’s and tutorials, as they provide compact and easily accessible information. While man-pages and detailed tutorials often contain comprehensive explanations and extensive guides, cheatsheets summarize the most important options forthe command uniq in a clear format. This allows users to quickly access the needed information for uniq without having to sift through lengthy texts. Especially in stressful situations or for recurring tasks, cheatsheets for uniq are a valuable resource to work efficiently and purposefully.

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