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Simple Email Validator in Bash
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| #!/usr/bin/env bash | |
| valid_inputs=( | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "valid@e-x_ample.com" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| ) | |
| invalid_inputs=( | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "inv [email protected]" | |
| "invalid@exa mple.com" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "invalid@_" | |
| "invalid@com" | |
| "[email protected]" | |
| "invalid@example._com" | |
| "invalid@e-x._ample.com" | |
| "[email protected]_ample.com" | |
| "[email protected]_ample.com" | |
| "[email protected]" | |
| "invalid@example._" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "invalid@example." | |
| "[email protected]." | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "[email protected]" | |
| "invalid@com" | |
| "@" | |
| ".@." | |
| "-@-" | |
| "_@_" | |
| "+@+" | |
| "a.@.." | |
| "@com" | |
| "@example.com" | |
| "[email protected]" | |
| "[email protected]" | |
| "invalid@_123.com" | |
| "[email protected]" | |
| "[email protected]" | |
| ) | |
| regex="^([A-Za-z]+((\.|\-|\_)?[A-Za-z0-9])*\+?((\.|\-|\_)?[A-Za-z]+[A-Za-z0-9]*)*)@(([A-Za-z0-9]+)+((\.|\-|\_)?([A-Za-z0-9]+)+)*)+\.([A-Za-z]{2,})+$" | |
| function validator { | |
| if [[ $1 =~ ${regex} ]]; then | |
| printf "* %-48s \e[1;32m[pass]\e[m\n" "${1}" | |
| else | |
| printf "* %-48s \e[1;31m[fail]\e[m\n" "${1}" | |
| fi | |
| } | |
| cat <<-EOF | |
| a simple email validator in shell | |
| online validator: http://emailregex.com/ | |
| RFC: http://emailregex.com/email-validation-summary/ | |
| EOF | |
| echo | |
| echo "### expected result: valid" | |
| echo | |
| for input in "${valid_inputs[@]}"; do | |
| validator "${input}" | |
| done | |
| echo | |
| echo "### expected result: invalid" | |
| echo | |
| for input in "${invalid_inputs[@]}"; do | |
| validator "${input}" | |
| done |
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