= Tools to work with Fortran Namelists and Jobcards =

== sed ==

If you want to change GiBUU input jobcards via a (bash) script, one way is to store the skeleton as a template, where the variables you want to change are given by placeholders like XXX. YYY etc. 
Then you may use `sed` to replace the placeholder by the actual value, e.g. "sed s/XXX/myValue/"

== f90nml, nmltab ==

Recently (april 2022) I became aware of two projects at !GitHub, which are capable of reading in, changing, fine printing, comparing etc. of Fortran jobcards/namelists, written in Python:
 * f90nml [https://github.com/marshallward/f90nml]
 * nmltab [https://github.com/aekiss/nmltab]