update readme about examples

README.md

@@ -87,6 +87,22 @@ in
   }
 ```
 
+## Examples
+
+```bash
+stern --context kind-kind etcd |& sig
+# or
+sig --cmd "stern --context kind-kind etcd" # this is able to retry command by ctrl+r.
+```
+
+### Archived mode
+
+```bash
+cat README.md |& sig -a
+# or
+sig -a --cmd "cat README.md"
+```
+
 ## Keymap
 
 | Key                  | Action
@@ -120,6 +136,17 @@ Interactive grep (for streaming)
 
 Usage: sig [OPTIONS]
 
+Examples:
+
+$ stern --context kind-kind etcd |& sig
+Or the method to retry command by pressing ctrl+r:
+$ sig --cmd "stern --context kind-kind etcd"
+
+Archived mode:
+$ cat README.md |& sig -a
+Or
+$ sig -a --cmd "cat README.md"
+
 Options:
       --retrieval-timeout <RETRIEVAL_TIMEOUT_MILLIS>
           Timeout to read a next line from the stream in milliseconds. [default: 10]

src/main.rs

@@ -34,6 +34,29 @@ pub enum Signal {
 /// Interactive grep (for streaming)
 #[derive(Parser)]
 #[command(name = "sig", version)]
+#[command(
+    name = "sig",
+    version,
+    help_template = "
+{about}
+
+Usage: {usage}
+
+Examples:
+
+$ stern --context kind-kind etcd |& sig
+Or the method to retry command by pressing ctrl+r:
+$ sig --cmd \"stern --context kind-kind etcd\"
+
+Archived mode:
+$ cat README.md |& sig -a
+Or
+$ sig -a --cmd \"cat README.md\"
+
+Options:
+{options}
+"
+)]
 pub struct Args {
     #[arg(
         long = "retrieval-timeout",