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Add basic input validation to select example #130

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6 changes: 6 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -780,6 +780,12 @@ A working example might look like this:
PS3="Choose the package manager: "
select ITEM in bower npm gem pip
do
# exit early if selection is invalid
if [[ -z "$ITEM" ]]; then
>&2 echo "Invalid selection"
exit 1
fi

echo -n "Enter the package name: " && read PACKAGE
case $ITEM in
bower) bower install $PACKAGE ;;
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