Lint on pkg/* packages

- pkg/useragent
- pkg/units
- pkg/ulimit
- pkg/truncindex
- pkg/timeoutconn
- pkg/term
- pkg/tarsum
- pkg/tailfile
- pkg/systemd
- pkg/stringutils
- pkg/stringid
- pkg/streamformatter
- pkg/sockets
- pkg/signal
- pkg/proxy
- pkg/progressreader
- pkg/pools
- pkg/plugins
- pkg/pidfile
- pkg/parsers
- pkg/parsers/filters
- pkg/parsers/kernel
- pkg/parsers/operatingsystem

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

stringid/stringid.go

@@ -1,3 +1,4 @@
+// Package stringid provides helper functions for dealing with string identifiers
 package stringid
 
 import (
@@ -12,7 +13,7 @@ const shortLen = 12
 
 var validShortID = regexp.MustCompile("^[a-z0-9]{12}$")
 
-// Determine if an arbitrary string *looks like* a short ID.
+// IsShortID determines if an arbitrary string *looks like* a short ID.
 func IsShortID(id string) bool {
 	return validShortID.MatchString(id)
 }
@@ -29,7 +30,7 @@ func TruncateID(id string) string {
 	return id[:trimTo]
 }
 
-// GenerateRandomID returns an unique id
+// GenerateRandomID returns an unique id.
 func GenerateRandomID() string {
 	for {
 		id := make([]byte, 32)