idank / idank/explainshell

the parser doesn't support 'arithmetic expansion' constructs in the command you tried

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Dominant language
Python
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Description

while entering:

tar cf - /folder-with-big-files -P | pv -s $(($(du -sk /folder-with-big-files | awk '{print $1}') * 1024)) | gzip > big-files.tar.gz

it outputs:

the parser doesn't support 'arithmetic expansion' constructs in the command you tried. you may report a bug to have this added, if one doesn't already exist

So, as the output says, i report it.

thank you

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the command shown in the issue and inspect the parser's handling of arithmetic expansion, since no source file or test is named. The work is done when the parser accepts the $((...)) construct in this command without reporting it as unsupported, with coverage for the reported example.

Written by the indexing model from the issue text.

Assessment

Tech stack
bash, python
Domain
cli
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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