01-03-2012
Quote:
Originally Posted by
pandeesh
This is an awesome one liner!
Thanks pandeesh
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Sorry for the duplicate thread this one is similar to the one in
https://www.unix.com/shell-programming-scripting/88132-awk-sed-script-read-values-parameter-files.html#post302255121
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Hello,
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i have a file, let's call it file.
march 2008 january 2008
march 1920 march 2002
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hello hello
hello hello
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donkey
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drink
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The input file:
>cat module1
200611051053 95
200523457498 35
200617890187 57
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Hi,
I came to know that using awk '!x++' removes the duplicate lines. Can anyone please explain the above syntax. I want to understand how the above awk syntax removes the duplicates.
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Hi All,
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So I've got problem which continues on my previous one (from few months ago:
unix.com/shell-programming-scripting/171764-delete-duplicate-lines-twist.html ).
Good, proven, working solutions for that old problem are those:
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Hi,
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...or
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******************
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awk -F',|;' -v test="$test" '
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LEARN ABOUT DEBIAN
plan9-read
CAT(1) General Commands Manual CAT(1)
NAME
cat, read, nobs - catenate files
SYNOPSIS
cat [ file ... ]
read [ -m ] [ -n nline ] [ file ... ]
nobs [ file ... ]
DESCRIPTION
Cat reads each file in sequence and writes it on the standard output. Thus
cat file
prints a file and
cat file1 file2 >file3
concatenates the first two files and places the result on the third.
If no file is given, cat reads from the standard input. Output is buffered in blocks matching the input.
Read copies to standard output exactly one line from the named file, default standard input. It is useful in interactive rc(1) scripts.
The -m flag causes it to continue reading and writing multiple lines until end of file; -n causes it to read no more than nline lines.
Read always executes a single write for each line of input, which can be helpful when preparing input to programs that expect line-at-a-
time data. It never reads any more data from the input than it prints to the output.
Nobs copies the named files to standard output except that it removes all backspace characters and the characters that precede them. It is
useful to use as $PAGER with the Unix version of man(1) when run inside a win (see acme(1)) window.
SOURCE
/src/cmd/cat.c
/src/cmd/read.c
/bin/nobs
SEE ALSO
cp(1)
DIAGNOSTICS
Read exits with status eof on end of file or, in the -n case, if it doesn't read nlines lines.
BUGS
Beware of and which destroy input files before reading them.
CAT(1)