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Top Forums Shell Programming and Scripting Detect continuous number as range Post 302974024 by before4 on Wednesday 25th of May 2016 03:23:14 AM
Old 05-25-2016
Quote:
Originally Posted by pravin27
RavinderSingh13,
One doubt here , why 179 183 is in your o/p
o/p in the post of before4 does not include it.
Little modification if you want to exclude 179 183
Code:
awk 'NR==1{first=$0;prev=$0;next }
$0 - prev == 1 { prev=$0; next } { if (first != prev) { print first,prev;} prev=$0;first=$0 } END { print  first,prev;}' infile

Thanks
Pravin
many thanks Pravin,

Is it possible to print 179 as single line,
Code:
171 176
179
182 183
187 189
1900 1901
1903 1907

 

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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)
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