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Shell Programming and Scripting
Uniq Command?
Post 302475774 by Chubler_XL on Tuesday 30th of November 2010 12:07:26 AM
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HI,
Please tell the usage of uniq command in UNIX with example
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It's not entirely clear to me from manpage the difference between them.
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I call....
cat 1.txt | uniq -c
Sample of whats in 1.txt
vmstat
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w
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at which situation uniq command fails.
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Dear Friends,
I want to know if it is possible to perform addition as part of uniq command.
Input:
213.64.56.208 1
213.64.56.208 2
213.64.56.208 3
213.46.27.204 10
213.46.27.204 20
213.46.27.204 30
The above input should be converted as follows
213.64.56.208 6
213.46.27.204 60
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Hello
i have tried to retrieve a distinct list of data from a file with a command combination but the uniq command line is not filtering the fields repeated.
Can someone help me ?
here is the file input
3837734|LAUNCH TEST01
3837735|LAUNCH TEST01
3837736|LAUNCH TEST01
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Platform :Oracle Linux 6.4
Shell : bash
The below file has 7 lines , some of them are duplicates. There are only 3 distinct lines. But why is the uniq command still showing 7 ?
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LEARN ABOUT SUNOS
prev
PREV(1) [nmh-1.5] PREV(1) NAME
prev - show the previous message SYNOPSIS
prev [+folder] [-showproc program] [-showmimeproc program] [-header | -noheader] [-checkmime | -nocheckmime] [switches for showproc or showmimeproc] [-version] [-help] DESCRIPTION
Prev performs a show on the previous message in the specified (or current) folder. Like show, it passes any switches on to the program named by showproc or showmimeproc, which is called to list the message. This command is almost exactly equivalent to "show prev". Consult the manual entry for show(1) for all the details. FILES
$HOME/.mh_profile The user profile PROFILE COMPONENTS
Path: To determine the user's nmh directory Current-Folder: To find the default current folder showproc: Program to show non-MIME messages showmimeproc: Program to show MIME messages SEE ALSO
show(1), next(1) DEFAULTS
`+folder' defaults to the current folder `-checkmime' `-header' CONTEXT
If a folder is specified, it will become the current folder. The message that is shown (i.e., the previous message in sequence) will become the current message. BUGS
prev is really a link to the show program. As a result, if you make a link to prev and that link is not called prev, your link will act like show instead. To circumvent this, add a profile-entry for the link to your nmh profile and add the argument prev to the entry. MH.6.8 11 June 2012 PREV(1)