adds GetEnvWithDefault (#1)

jritsema · Oct 16, 2020 · a90bf6b · a90bf6b
1 parent 333e26a
commit a90bf6b
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diff --git a/README.md b/README.md
@@ -6,9 +6,10 @@ A kitchen sink of Go tools that I've found useful. Uses only the standard librar
 
 - [super lightweight http server framework](web)
 - [exponential backoff retry](retry.go)
-- [working with json](json.go)
+- [working with JSON](json.go)
 - [working with the file system](fs.go)
 - [working with slices](slice.go)
+- [working with CLIs](cli.go)
 
 ### example usage
 

diff --git a/app b/app
diff --git a/cli.go b/cli.go
@@ -2,9 +2,20 @@ package gotoolbox
 
 import (
 	"bytes"
+	"os"
 	"os/exec"
 )
 
+//GetEnvWithDefault returns the value of an enviornment variable
+//or a default value if the environment variables is not set
+func GetEnvWithDefault(key, defaultValue string) string {
+	result := os.Getenv(key)
+	if result == "" {
+		return defaultValue
+	}
+	return result
+}
+
 //ExecCmd executes a command and waits
 func ExecCmd(cmd *exec.Cmd) error {