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Q&A How to open a file and edit its content in groovy script

I have a Makefile in my Jenkins job's workspace, that I want to edit out certain parts from and then save it, before running next part of the script that uses this Makefile. The part that I want t...

2 answers  ·  posted 2y ago by Megan‭  ·  last activity 2y ago by Alexei‭

Question jenkins shell groovy
#3: Nominated for promotion by user avatar Alexei‭ · 2022-05-22T17:10:14Z (over 2 years ago)
#2: Post edited by user avatar hkotsubo‭ · 2022-05-17T17:44:34Z (over 2 years ago)
formatting improved / removed non-related tags
How to open a file and edit its content in groovy script
  • I have a Makefile in my Jenkins job's workspace, that I want to edit out certain parts from and then save it, before running next part of the script that uses this Makefile.
  • the part that I want to cut out is this-
  • `PUMP_MARKER:=,cpp
  • ifneq (,$(findstring $(PUMP_MARKER), $(DISTCC_HOSTS)))
  • PUMP:=pump
  • else
  • PUMP:=
  • endif`
  • I am looking for some shell command that I could put in my groovy script, that will open up this file and remove this above mentioned part, save it and then move on.
  • I'm not good with shell so I cant possible figure this out on my own.
  • Here is how my groovy script looks like-
  • `stage('Build'){`
  • `dir ("$WORKSPACE/$SVN_TAG") {`
  • Here- I want to insert some shell command to edit that file out
  • `}`
  • `}`
  • Could any please suggest some ideas to implement this.
  • Note- I know I could just vi that file and manually do this but I want to do this for multiple jobs and I'm genuinely looking for something that I can just paste in my every groovy script and automatically do this.
  • I have a Makefile in my Jenkins job's workspace, that I want to edit out certain parts from and then save it, before running next part of the script that uses this Makefile.
  • The part that I want to cut out is this:
  • ```
  • PUMP_MARKER:=,cpp
  • ifneq (,$(findstring $(PUMP_MARKER), $(DISTCC_HOSTS)))
  • PUMP:=pump
  • else
  • PUMP:=
  • endif
  • ```
  • I am looking for some shell command that I could put in my Groovy script, that will open up this file and remove this above mentioned part, save it and then move on.
  • Here is how my Groovy script looks like:
  • ```groovy
  • stage('Build'){
  • dir ("$WORKSPACE/$SVN_TAG") {
  • Here- I want to insert some shell command to edit that file out
  • }
  • }
  • ```
  • Note: I know I could just `vi` that file and manually do this but I want to do this for multiple jobs and I'm genuinely looking for something that I can just paste in my every Groovy script and automatically do this.
#1: Initial revision by user avatar Megan‭ · 2022-05-17T17:37:25Z (over 2 years ago)
How to open a file and edit its content in groovy script
I have a Makefile in my Jenkins job's workspace, that I want to edit out certain parts from and then save it, before running next part of the script that uses this Makefile.

the part that I want to cut out is this-

`PUMP_MARKER:=,cpp
ifneq (,$(findstring $(PUMP_MARKER), $(DISTCC_HOSTS)))
PUMP:=pump
else
PUMP:=
endif`


I am looking for some shell command that I could put in my groovy script, that will open up this file and remove this above mentioned part, save it and then move on.

I'm not good with shell so I cant possible figure this out on my own.

Here is how my groovy script looks like-

`stage('Build'){`

  `dir ("$WORKSPACE/$SVN_TAG") {`

    Here- I want to insert some shell command to edit that file out
  `}`

`}`

Could any please suggest some ideas to implement this.


Note- I know I could just vi that file and manually do this but I want to do this for multiple jobs and I'm genuinely looking for something that I can just paste in my every groovy script and automatically do this.