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Comment by esafak | Hacker News Reader

Yes, using shell functions:

  git_log() {
    git log --pretty=tformat:'%at %ae'
  }

Separating function definitions allows you to run, test, and re-use them.

And, more importantly, assign a name to a process, so that it can appear multiple times in the graph.

You might want to try looking at the Neo4j query language Cypher for some possible inspiration for the syntax.