Update readme

jclehner · Nov 19, 2016 · 8507eca · 8507eca
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Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -108,7 +108,10 @@ network interface.
 This error message could also indicate a bug in the TFTP code; try using an external tftp
 client (busybox in this example), by specifying the `-c` flag instead of the `-f` flag:
 
-`# nmrpflash -i eth0 -c "busybox tftp -p -l EX2700-V1.0.1.8.img \$IP"`
+`# nmrpflash -i eth0 -c 'busybox tftp -p -l EX2700-V1.0.1.8.img $IP'`
+
+The environment variable `IP` is set by `nmrpflash` (other environment variables
+are: `MAC`, `PORT`, `NETMASK`).
 
 ###### "Timeout while waiting for CLOSE_REQ."