-i to list only ids (used in scripts)

commands.go

@@ -110,6 +110,10 @@ func cmdLs(db *sql.DB, w *tabwriter.Writer, opts options) bool {
 	for _, attr := range attrs {
 		if opts.ListFilepaths {
 			fmt.Println(attr.filepath())
+		} else if opts.ListIDs {
+			val, err := attr.ID.Value()
+			check(err)
+			fmt.Printf("%d\n", val)
 		} else {
 			attr.print(w, opts.Recursive, opts.Indent, opts.Filters, opts.AfterLinesCount)
 		}

main.go

@@ -21,7 +21,7 @@ const dbfilename string = ".etondb"
 
 const usage string = `Usage:
     eton new [-|<note>] [-v]
-    eton (ls|grep) [<filters>...] [-asl] [-o OFFSET] [-L LIMIT] [--after AFTER] [--removed]
+    eton (ls|grep) [<filters>...] [-asli] [-o OFFSET] [-L LIMIT] [--after AFTER] [--removed]
     eton edit [<ids>...] [-v]
     eton alias <id1> <id2>
     eton unalias <alias>
@@ -40,6 +40,7 @@ Options:
     -L, --limit LIMIT    maximum number of rows returned, pass -Lall to list everything [default: 10]
     -r, --recursive      recursive mode
     -l, --list-files     list items as filenames
+	-i, --list-ids       list items as ids
     -s, --short          short mode lists rows with aliases only
     -v, --verbose        talk a lot
     -a, --all            list all items, alias for --limit -1

options.go

@@ -29,6 +29,7 @@ type options struct {
 	ShortMode       bool
 	Verbose         bool
 	ListFilepaths   bool
+	ListIDs         bool
 	MountPoint      string
 	Note            string
 	AfterLinesCount int
@@ -43,6 +44,7 @@ func optionsFromArgs(args map[string]interface{}) (opts options) {
 	opts.RootID = -1
 	opts.Indent = 0
 	opts.ListFilepaths = args["--list-files"].(bool)
+	opts.ListIDs = args["--list-ids"].(bool)
 
 	if args["<note>"] != nil {
 		opts.Note = args["<note>"].(string)