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33 lines
1.1 KiB
Markdown
Vendored
33 lines
1.1 KiB
Markdown
Vendored
# Append text on install
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Sometimes it might be useful to be able to append some text to a
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file. Dotdrop is able to do that with the help of
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[actions](../config/config-actions.md) and a temporary file.
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Below is a config example to append to a file:
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```yaml
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dynvariables:
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tmpfile: mktemp
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variables:
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somefile_final: ~/.somefile
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dotfiles:
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f_somefile:
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dst: "{{@@ tmpfile @@}}"
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src: somefile
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actions:
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- strip "{{@@ somefile_final @@}}"
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- append "{{@@ tmpfile @@}}" "{{@@ somefile_final @@}}"
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actions:
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pre:
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strip: "sed -i '/^# my pattern$/,$d' {0}"
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post:
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append: "cat {0} >> {1}; rm -f {0}"
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```
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During installation, the `strip` action is executed before the installation, and it strips everything from the pattern `# my pattern` to the end of the file. Then the dotfile `somefile` is installed in a temporary location (here `tmpfile`) and finally the post action `append` will append the contents of the `tmpfile` to the final dotfile pointed to by `somefile_final`.
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Obviously, the dotfile in the dotpath should start with a unique pattern (here `# my pattern`):
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```
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# my pattern
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this is the end
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```
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