CAT(1) - General Commands Manual # CAT(1) - General Commands Manual
NAME # cat - concatenate and print files
SYNOPSIS # cat [-benstuv] [file …]
DESCRIPTION # The cat utility reads files sequentially, writing them to the standard output. The file operands are processed in command-line order. If file is a single dash (’-’) or absent, cat reads from the standard input.
The options are as follows:
-b
Number the lines, but don’t count blank lines.
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HEAD(1) - General Commands Manual # HEAD(1) - General Commands Manual
NAME # head - display first few lines of files
SYNOPSIS # head [-‌count | -n count] [file …]
DESCRIPTION # The head utility copies the first count lines of each specified file to the standard output. If no files are named, head copies lines from the standard input. If count is omitted, it defaults to 10.
The options are as follows:
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NC(1) - General Commands Manual # NC(1) - General Commands Manual
NAME # nc - arbitrary TCP and UDP connections and listens
SYNOPSIS # nc [-46cDdFhklNnrStUuvz] [-C certfile] [-e name] [-H hash] [-I length] [-i interval] [-K keyfile] [-M ttl] [-m minttl] [-O length] [-o staplefile] [-P proxy_username] [-p source_port] [-R CAfile] [-s sourceaddr] [-T keyword] [-V rtable] [-W recvlimit] [-w timeout] [-X proxy_protocol] [-x proxy_address[:port]] [-Z peercertfile] [destination] [port]
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PR(1) - General Commands Manual # PR(1) - General Commands Manual
NAME # pr - print files
SYNOPSIS # pr [+‌page] [-‌column] [-adFfmrt] [-e[char][gap]] [-h header] [-i[char][gap]] [-l lines] [-n[char][width]] [-o offset] [-s[char]] [-w width] [file …]
DESCRIPTION # The pr utility is a printing and pagination filter for text files. When multiple input files are specified, each is read, formatted, and written to standard output. By default, the input is separated into 66-line pages, each with
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REV(1) - General Commands Manual # REV(1) - General Commands Manual
NAME # rev - reverse lines of a file
SYNOPSIS # rev [file …]
DESCRIPTION # The rev utility copies the specified files to the standard output, reversing the order of characters in every line. If no files are specified, the standard input is read.
ENVIRONMENT # LC_CTYPE
The character encoding locale(1). It decides which byte sequences form characters.
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TAIL(1) - General Commands Manual # TAIL(1) - General Commands Manual
NAME # tail - display the last part of a file
SYNOPSIS # tail [-f | -r] [-b number | -c number | -n number | -‌number] [file …]
DESCRIPTION # The tail utility displays the contents of file or, by default, its standard input, to the standard output.
The display begins at a byte, line, or 512-byte block location in the input.
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