# Selecting section and removing match **URL:** \ **Category:** Shell Programming and Scripting\ **Created:** [February 7, 2020, 4:33pm UTC](https://community.unix.com/t/selecting-section-and-removing-match/377194 "2020-02-07T16:33:57Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Danette](https://community.unix.com/letter_avatar/danette/32/6_22734026db12803ebb3e059622ac3534.png) [@Danette](https://community.unix.com/u/Danette)\ **Post date:** [February 7, 2020, 4:33pm UTC](https://community.unix.com/t/selecting-section-and-removing-match/377194/1 "2020-02-07T16:33:57Z")
I have a file with contents as shown in file.texi Would like to keep only the sections that have inlineifset till the empty line is reached. Finally replace the following string with a space ```nohighlight @inlineifset{mrg, @opar{@bullet{} ``` I had written the following command but it messed my file ```nohighlight sed 's/inlineifset/,/^ *$/p' $flnm |\ sed 's/@inlineifset\{mrg\, @opar\{@bullet\{\} //g' > ch--outline.texi ``` The result should be ```nohighlight @subsubsection ObsPy LibmSeed License Problem,,,,}} @inlineifset{mrg, @opar{@point{} ObsPy [LibmSeed];, Problems Merging Codes;, Hard to package and release software;, Practices in Seismology require careful thought,}} @inlineifset{mrg, @opar{@point{} ObsPy [LibmSeed];, Problems Merging Codes;, Hard to package and release software;, Practices in Seismology require careful thought,}} @inlineifset{mrg, @opar{+ ObsPy LibmSeed Routines;, libmseed-2.6.2: obspy-readbuffer.c packdata.c unpackdata.c;, Pack Routines taken from qlib2;, Incompatible Licenses.,}} ``` ```nohighlight cat file.texi @node ObsPy--ObsPy--LibmSeed--LicProblem @subsubsection ObsPy LibmSeed License Problem @inlineifset{mrg, @opar{@bullet{} @subsubsection ObsPy LibmSeed License Problem,,,,}} @inlineifset{mrg, @opar{@point{} ObsPy [LibmSeed];, Problems Merging Codes;, Hard to package and release software;, Practices in Seismology require careful thought,}} The developers of ObsPy had taken a step in the right direction by promoting principled, community minded seismological computations. However, the @emph{LibmSeed} story exposes the problems that can be encountered when merging code from a large number of other packages into ObsPy. This situation shows how hard it is to package and release software. As a result, practices in seismology require careful thought. If such thought is not done, the problems will get much worse, especially for future seismological work and for succeeding generations. A relevant illustrative example is ObsPy, a framework for processing seismology data that has become popular with students. However, its philosophy of rapid development is today progressing without forethought and good practice, as evidenced by the @emph{LibmSeed} license problem. In fact, Till 2016, obspy was not legally suitable for source release as it was, unless libmseed was stripped from it. @c @section ObsPy Framework for Processing Seismological Data. @inlineifset{mrg, @opar{@point{} ObsPy [LibmSeed];, Problems Merging Codes;, Hard to package and release software;, Practices in Seismology require careful thought,}} @inlineifset{mrg, @opar{+ ObsPy LibmSeed Routines;, libmseed-2.6.2: obspy-readbuffer.c packdata.c unpackdata.c;, Pack Routines taken from qlib2;, Incompatible Licenses.,}} Developers of the Python Framework for Processing Seismological Data (ObsPy) have taken a step in the right direction by promoting principled, community-minded seismological computations. Particularly important was the replacement of the pack routines in the ObsPy Mini-Seed Library called LibmSeed. The library is a framework for manipulating the @emph{Standard for the Exchange of Earthquake Data} [Seed] Data Records. There were two source files involved, namely, @file{packdata.c} and @file{unpackdata.c}; both taken from the @code{qlib2} library developed by Berkeley Seismological Laboratory Information Systems Manager Douglas Neuhauser @uref{http://www.ncedc.org/qug/software/ucb/}. The two routines were called from @code{obspy/io/mseed/src/libmseed/obspy-readbuffer.c}, The modifications were done and released by Chad Trabant @minus @ Deputy Director for Projects at Iris @minus @ in Version 2.6.2 of LibmSeed tagged on GitHub as @code{libmseed-2.6.2} on Sep 23, 2016. The problem originated from the incompatible terms of the GNU Lesser General Public License (LGPL) and the University of California Berkeley License. The explicit restriction from commercial use made the software source code proprietary, contradicting the usage terms of the LGPL. Till then, ObsPy was not legally suitable for source release as it was, unless LibmSeed was stripped from it. ``` ---
**Author:** ![RudiC](https://community.unix.com/letter_avatar/rudic/32/6_22734026db12803ebb3e059622ac3534.png) [@RudiC](https://community.unix.com/u/RudiC)\ **Post date:** [February 7, 2020, 7:30pm UTC](https://community.unix.com/t/selecting-section-and-removing-match/377194/2 "2020-02-07T19:30:03Z")
Try - remember you wanted a space! - ```nohighlight $ awk '/inlineifset/ {sub (/@inlineifset{mrg, @opar{@bullet{}/, " "); print}' RS= ORS="\n\n" file @subsubsection ObsPy LibmSeed License Problem,,,,}} @inlineifset{mrg, @opar{@point{} ObsPy [LibmSeed];, Problems Merging Codes;, Hard to package and release software;, Practices in Seismology require careful thought,}} @inlineifset{mrg, @opar{@point{} ObsPy [LibmSeed];, Problems Merging Codes;, Hard to package and release software;, Practices in Seismology require careful thought,}} @inlineifset{mrg, @opar{+ ObsPy LibmSeed Routines;, libmseed-2.6.2: obspy-readbuffer.c packdata.c unpackdata.c;, Pack Routines taken from qlib2;, Incompatible Licenses.,}} ``` ---
**Author:** ![Danette](https://community.unix.com/letter_avatar/danette/32/6_22734026db12803ebb3e059622ac3534.png) [@Danette](https://community.unix.com/u/Danette)\ **Post date:** [February 8, 2020, 5:09am UTC](https://community.unix.com/t/selecting-section-and-removing-match/377194/3 "2020-02-08T05:09:26Z")
It would be good to also remove the `,,,,}}` of the sections commands. A command that has also worked is ```nohighlight sed -n '/inlineifset/,/^ *$/p' $flnm |\ sed 's/@inlineifset{mrg, @opar{@bullet{} @//g' >> $ofln ``` ---
**Author:** ![nezabudka](https://community.unix.com/letter_avatar/nezabudka/32/6_22734026db12803ebb3e059622ac3534.png) [@nezabudka](https://community.unix.com/u/nezabudka)\ **Post date:** [February 8, 2020, 5:42am UTC](https://community.unix.com/t/selecting-section-and-removing-match/377194/4 "2020-02-08T05:42:54Z")
Hi no pipe needed ```nohighlight sed '/inlineifset/,/^ *$/!d; s/@inlineifset{mrg, @opar{@bullet{} @//' $flnm ``` ---
**Author:** ![Danette](https://community.unix.com/letter_avatar/danette/32/6_22734026db12803ebb3e059622ac3534.png) [@Danette](https://community.unix.com/u/Danette)\ **Post date:** [February 8, 2020, 12:08pm UTC](https://community.unix.com/t/selecting-section-and-removing-match/377194/5 "2020-02-08T12:08:08Z")
Ok, I found I can also write the commands on multiple lines ```nohighlight sed '/inlineifset/,/^ *$/!d; s/@inlineifset{mrg, @opar{@bullet{} @//' $flnm ``` is then rewritten as ```nohighlight sed '/inlineifset/,/^ *$/!d; s/@inlineifset{mrg, @opar{@bullet{} @//' $flnm ``` When I find ```nohighlight @inlineifset{mrg, @opar{@bullet{} @@subsection Complications of External Dependencies,,,,}} ``` I want to put things in one line and also remove the `,,,,}}` at the end ```nohighlight @subsection Complications of External Dependencies ``` ---
**Author:** ![RudiC](https://community.unix.com/letter_avatar/rudic/32/6_22734026db12803ebb3e059622ac3534.png) [@RudiC](https://community.unix.com/u/RudiC)\ **Post date:** [February 8, 2020, 12:58pm UTC](https://community.unix.com/t/selecting-section-and-removing-match/377194/6 "2020-02-08T12:58:50Z")
How about ```nohighlight awk '/inlineifset/ {gsub (/@inlineifset{mrg, @opar{@bullet{} |,,,,}}/, ""); print}' RS= ORS="\n\n" file ``` or, if you insist on `sed` , ```nohighlight sed '/inlineifset/,/^ *$/!d; s/@inlineifset{mrg, @opar{@bullet{} \(.*\),,,,}}/\1/' file ``` ---
**Author:** ![Danette](https://community.unix.com/letter_avatar/danette/32/6_22734026db12803ebb3e059622ac3534.png) [@Danette](https://community.unix.com/u/Danette)\ **Post date:** [February 8, 2020, 3:07pm UTC](https://community.unix.com/t/selecting-section-and-removing-match/377194/7 "2020-02-08T15:07:03Z")
I am going to stop this here as it actually answers the original task. ---
**Author:** ![system](https://community.unix.com/uploads/default/original/2X/c/c7e9e16a595259edafe88615719d5c5dcda035c2.png) [@system](https://community.unix.com/u/system)\ **Post date:** [August 9, 2020, 7:22pm UTC](https://community.unix.com/t/selecting-section-and-removing-match/377194/8 "2020-08-09T19:22:56Z")
Automatically bumped on August 9, 2020, 7:22pm UTC ---
**Author:** ![Neo](https://community.unix.com/user_avatar/community.unix.com/neo/32/22838_2.png) [@Neo](https://community.unix.com/u/Neo)\ **Post date:** [August 10, 2020, 5:42am UTC](https://community.unix.com/t/selecting-section-and-removing-match/377194/9 "2020-08-10T05:42:22Z")
Hey @RudiC ![](https://media.tenor.com/videos/2110865ec367ca7a2329ca5830626ec7/mp4)