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Enable environment variable expansion #67

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Enable environment variable expansion #67

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7 changes: 7 additions & 0 deletions iptables/iptables.go
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@ import (
"strconv"
"strings"
"syscall"
"os"
)

// Adds the output of stderr to exec.ExitError
Expand Down Expand Up @@ -432,6 +433,12 @@ func (ipt *IPTables) runWithOutput(args []string, stdout io.Writer) error {
}

var stderr bytes.Buffer

//expand environment variables
for index, element := range args {
args[index] = os.ExpandEnv(element)
}

cmd := exec.Cmd{
Path: ipt.path,
Args: args,
Expand Down