cmd: start linting fixes.

cmd/pembody/pembody.go

@@ -3,8 +3,7 @@ package main
 import (
 	"encoding/pem"
 	"flag"
-	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 
 	"git.wntrmute.dev/kyle/goutils/lib"
@@ -19,19 +18,21 @@ func main() {
 	var in []byte
 	var err error
 
-	path := flag.Arg(0)
-	if path == "-" {
-		in, err = ioutil.ReadAll(os.Stdin)
-	} else {
-		in, err = ioutil.ReadFile(flag.Arg(0))
-	}
+ path := flag.Arg(0)
+ if path == "-" {
+     in, err = io.ReadAll(os.Stdin)
+ } else {
+     in, err = os.ReadFile(flag.Arg(0))
+ }
 	if err != nil {
 		lib.Err(lib.ExitFailure, err, "couldn't read file")
 	}
 
 	p, _ := pem.Decode(in)
-	if p == nil {
-		lib.Errx(lib.ExitFailure, "%s isn't a PEM-encoded file", flag.Arg(0))
-	}
-	fmt.Printf("%s", p.Bytes)
+ if p == nil {
+        lib.Errx(lib.ExitFailure, "%s isn't a PEM-encoded file", flag.Arg(0))
+    }
+    if _, err := os.Stdout.Write(p.Bytes); err != nil {
+        lib.Err(lib.ExitFailure, err, "writing body")
+    }
 }