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38 lines
555 B
Plaintext
38 lines
555 B
Plaintext
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///////////
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# get-env #
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///////////
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## outputs value of existing env variable ##
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//set-env var test-val
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~> get-env var
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▶ test-val
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~> put $E:var
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▶ test-val
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## throws if env variable doesn't exist ##
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//unset-env var
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~> get-env var
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Exception: non-existent environment variable
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[tty]:1:1-11: get-env var
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///////////
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# has-env #
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///////////
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## exists ##
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//set-env var test-val
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~> has-env var
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▶ $true
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## doesn't exist ##
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//unset-env var
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~> has-env var
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▶ $false
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///////////
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# set-env #
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///////////
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~> set-env var test-val
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~> echo $E:var
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test-val
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