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Top Forums Shell Programming and Scripting Change the i-th character of the j-th line Post 302955895 by disedorgue on Wednesday 23rd of September 2015 09:06:15 AM
Old 09-23-2015
Hi, in bash:
Code:
$ ROW=3 && COL=15 && sed -e "$((ROW+1))s/./X/${COL}" file
#-----------------------------------
3                ! number of parameters of the polynome
0.00000e+00   0  ! fix=0) free=1
1.03916e-03   X  ! fix=0) free=1
0.00000e+00   0  ! fix=0) free=1
3                ! number of parameters
2.16595e-05   0  ! fix=0) free=1
0.00000e+00   0  ! fix=0) free=1
0.00000e+00   0  ! fix=0) free=1

Regards
This User Gave Thanks to disedorgue For This Post:
 

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EPUB-FIX(1)							      calibre							       EPUB-FIX(1)

NAME
epub-fix - part of calibre SYNOPSIS
epub-fix [options] file.epub DESCRIPTION
Fix common problems in EPUB files that can cause them to be rejected by poorly designed publishing services. By default, no fixing is done and messages are printed out for each error detected. Use the options to control which errors are automati- cally fixed. Whenever you pass arguments to epub-fix that have spaces in them, enclose the arguments in quotation marks. OPTIONS
--version show program's version number and exit -h, --help show this help message and exit --unmanifested Fix unmanifested files. epub-fix can either add them to the manifest or delete them as specified by the delete unmanifested option. --delete-unmanifested Delete unmanifested files instead of adding them to the manifest --epubcheck Workarounds for bugs in the latest release of epubcheck. epubcheck reports many things as errors that are not actually errors. epub- fix will try to detect these and replace them with constructs that epubcheck likes. This may cause significant changes to your epub, complain to the epubcheck project. SEE ALSO
The User Manual is available at http://manual.calibre-ebook.com Created by Kovid Goyal <kovid@kovidgoyal.net> epub-fix (calibre 0.8.51) January 2013 EPUB-FIX(1)
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