Add ability to manipulate files

[iilyak]

I am using task to write package installers. Specifically to install gitea on macos. I know I am using task outside of its design scope. But it is easier to use than ansible or chief. Specifically the tasks at hand which I am dealing with and missing support from "task". I know I can do it via shell commands but it wouldn't be portable.

• render go template to a file (and set permission and ownership)
  • template either from literal in Taskfile or from a given location on disk
  • bonus point if I can render into memory and compare the existing file content. Multiple merging strategies:
    • fail if different
    • skip if the same
    • merge if there are no merge conflicts
• remove literal line (rendered template) from the file if it is present
• add line to a file if it is not already present

[thetanil]

I use this kind of feature pretty often in ansible. I think all of them support template string literals or files in some way. In Ansible they are broken into three related modules, the third being blocks in a file, not just a line.

• ansible template
• ansible lineinfile
• ansible blockinfile