built in command line pager/viewer like less? Without busybox or root access

Sometimes i investigate foreign phones, where i can't root or install any Apps. But i want to examine the filesystem via adb shell, and view some text-files. Like i usually do with a *nix-shell: with the less or the more command. Both are absent in the shell, that i can access with adb shell. My workaround until now is using the linux tool screen in conjunction with the adb-shell-command cat. (C-a Esc to scroll, '/' to search, Esc Esc to quit Copy-mode)