fixed slight bug in docs/install.md

docs/install.md

@@ -269,7 +269,7 @@ make build_nexus-exam
 Running nexus-exam requires `SERVER_IP` and `CERT` environment variables. The former defines the nexus-server ip address; it must match the address defined in `config/certs/nexus-server.info` (typically 127.0.0.1 for a development server). The latter specifies the directory where the public certificate `ca-cert.pem` resides (typically in `nexus-server/certs/`):
 
 ```sh
-CERT=$HOME SERVER_IP=10.0.2.15 make run_nexus-exam
+make run_nexus-exam SERVER_IP=10.0.2.15 CERT=$HOME
 ```
 
 ## Deleting all nexus clients

src/client/nexus-exam/nexus-exam.go

@@ -32,7 +32,7 @@ func run() int {
         return 1
     }
 
-    pubCert, found := os.LookupEnv(g.ENV_NEXUS_CERT)
+    certPath, found := os.LookupEnv(g.ENV_NEXUS_CERT)
     if !found {
         u.PrintlnErr("Environment variable \""+g.ENV_NEXUS_CERT+"\" must be set!")
         u.PrintlnErr("It specifies the path to the public certificate required for encrypted communications (TLS) with the nexus server.")
@@ -40,8 +40,8 @@ func run() int {
         return 1
     }
 
-    if !utils.FileExists(pubCert) {
-        u.PrintlnErr("Failed reading certificate \""+pubCert+"\"!")
+    if !utils.FileExists(certPath) {
+        u.PrintlnErr("Failed reading certificate \""+certPath+"\"!")
         return 1
     }
 
@@ -74,7 +74,7 @@ func run() int {
         },
         OnSubmit: func() {
             port, _ := strconv.Atoi(portEntry.Text)
-            exec.RunRemoteViewer(server, pubCert, windowTitle, port, pwdEntry.Text, true)
+            exec.RunRemoteViewer(server, certPath, windowTitle, port, pwdEntry.Text, true)
         },
         SubmitText: "Connect",
     }