How to find an unclosed quote in your .zshrc file in macOS

Sunday, August 25, 2024 at 8:14 PM | 2 min read

Last modified on Wednesday, May 27, 2026 at 9:57 AM

#macOS, #ai, #warp terminal, #agent mode, #grep, #regex

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Table of Contents

Using the grep command to find where an unclosed quote is located in your .zshrc file

I was fixing my pyenv installation in macOS Sonoma v14.6.1, and I added some pyenv related configurations to my .zshrc file. As a result, I inadvertently removed a closing double quote somewhere. When I ran the exec $SHELL command to restart my shell, I got back the following in Terminal:

/Users/mariacam/.zshrc:132: unmatched "

I tried to manually skim through the file to find the mismatch, but it was impossible. I searched for a solution, and found it on Unix & Linux stack exchange:

# ran the command from ~ (/Users/mariacam)
grep -E -n  '^[^"]*"[^"]*$' .zshrc

The following was returned in Terminal:

125:export PATH="$PATH:/Users/mariacam/.local/bin

All I had to do was go to line 125 in my .zshrc file and add a closing " double quote.

Breaking down the grep command

The grep command is for searching text using patterns. In the grep command,

The -E option enables extended regular expressions, allowing you to use more complex patterns in your search.

The -n option includes the line numbers in the output, so you can see which lines the pattern matched.

I got the answer quickly from the Warp Terminal when I turned on Agent Mode.

Basically, grep -E -n '^[^"]*"[^"]*$' .zshrc means that I am looking for a double quote mismatch (a missing double quote) in my .zshrc file.

The regex meaning

But what does the '^[^"]*"[^"]*$' regex exactly mean?

  • ^: Indicates the position is at the start of the line.
  • [^"]*: Matches zero or more characters that are not double quotes (").
  • ": Matches a single double quote.
  • [^"]*: Matches zero or more characters that are not double quotes (").
  • $: Indicates the position is at the end of the line.

We have export PATH= containing characters which are not double quotes, followed by a single double quote, then $PATH:/Users/mariacam/.local/bin containing characters which are also not double quotes, and then no closing double quote!

This grep command can be used in any file that depends on matching double quotes, not just a .zshrc file.