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Find unused SCSS variables. Usage: `./find-unused-sass-variables.sh sassDir/`
#!/usr/bin/env bash
#
# Approach:
# 1. Find variable declaration in the form of "$my-var: anyvalue"
# 2. Loop through found variables and find occurrences of each variable in all sass files
# 3. Filter out vars that occurred only once
if [ -z "$1" ]; then
echo "Please specify a directory as the first argument."
exit 1
fi
if [ ! -d "$1" ]; then
echo "Not a valid directory."
exit 1
fi
echo "Finding unused variables. This might take some time..."
vars=$(find "$1" -type f -name "*.scss" -exec grep --color=never -h '^$[a-zA-Z0-9_-][^:]*' {} \; | sed 's/$\([a-zA-Z0-9_-][^:]*\).*/\1/')
for var in $vars; do
echo -n "Occurrences of \"\$$var\":"
find "$1" -type f -name "*.scss" -exec grep --color=never -h "$var" "{}" \; | wc -l
done | grep ' 1$'
@DanielApt
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Maybe I don't understand the usage, but I just ran this on a directory of .scss files and simply got the following output:

       1
       1

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ghost commented Aug 23, 2016

can someone elaborate how to use it :-) thanks

@w3debugger
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Usage

  1. Create a file (e.g. find-unused-variables.sh) having the code mention above (outside your less/sass folder).
  2. Run chmod +x ./find-unused-variables.sh to give execute permission to your script.
  3. Run ./find-unused-variables.sh less/sass

FYI @jensgeffken

@dertuerke
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can anyone update the script with a option to add a "variables.less/scss"-file an then search in another directory for the variables?

@RichardOtvos
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Usage

  1. Create a file (e.g. find-unused-variables.sh) having the code mention above (outside your less/sass folder).
  2. Run chmod +x ./find-unused-variables.sh to give execute permission to your script.
  3. Run ./find-unused-variables.sh less/sass

FYI @jensgeffken

You can also just run bash ./find-unused-variables.sh instead of step 2, no need to chmod.

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