Filtres¶
sort¶
Sorts standard input then outputs the sorted result on standard output.
uniq¶
Given a sorted stream of data from standard input, it removes duplicate lines of data (i.e., it makes sure that every line is unique).
grep¶
Examines each line of data it receives from standard input and outputs every line that contains a specified pattern of characters.
fmt¶
Reads text from standard input, then outputs formatted text on standard output.
pr¶
Takes text input from standard input and splits the data into pages with page breaks, headers and footers in preparation for printing.
head¶
Outputs the first few lines of its input. Useful for getting the header of a file.
tail¶
Outputs the last few lines of its input. Useful for things like getting the most recent entries from a log file.
tr¶
Translates characters. Can be used to perform tasks such as upper/lowercase conversions or changing line termination characters from one type to another (for example, converting DOS text files into Unix style text files).
sed¶
Stream editor. Can perform more sophisticated text translations than tr.
awk¶
An entire programming language designed for constructing filters. Extremely powerful.
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