C:\Users\admin\Desktop>adb shell
# su
su
# -lR /system/etc/dhcpcd
-lR /system/etc/dhcpcd
-lR: not found
# ls -lR /system/etc/dhcpcd
ls -lR /system/etc/dhcpcd
BusyBox v1.15.2 (2009-10-25 02:53:01 CET) multi-call binary
Copyright (C) 1998-2008 Erik Andersen, Rob Landley, Denys Vlasenko
and others. Licensed under GPLv2.
See source distribution for full notice.

Usage: busybox [function] [arguments]...
   or: function [arguments]...

        BusyBox is a multi-call binary that combines many common Unix
        utilities into a single executable.  Most people will create a
        link to busybox for each function they wish to use and BusyBox
        will act like whatever it was invoked as!

Currently defined functions:
        [, [[, addgroup, adduser, adjtimex, ar, arp, arping, ash, awk,
        basename, bbconfig, beep, brctl, bunzip2, bzcat, bzip2, cal, cat, catv,
        chattr, chgrp, chmod, chown, chpasswd, chpst, chroot, chrt, chvt,
        cksum, clear, cmp, comm, cp, cpio, crond, crontab, cryptpw, cut, date,
        dc, dd, deallocvt, delgroup, deluser, depmod, devmem, df, dhcprelay,
        diff, dirname, dmesg, dnsd, dnsdomainname, dos2unix, du, dumpkmap,
        dumpleases, echo, ed, egrep, eject, env, envdir, envuidgid, ether-wake,
        expand, expr, fakeidentd, false, fbset, fbsplash, fdflush, fdformat,
        fdisk, fgrep, find, findfs, flash_lock, flash_unlock, fold, free,
        freeramdisk, fsck, fsck.minix, fsync, ftpd, ftpget, ftpput, fuser,
        getopt, getty, grep, gunzip, gzip, halt, hd, hdparm, head, hexdump,
        hostid, hostname, httpd, hush, hwclock, id, ifconfig, ifdown,
        ifenslave, ifplugd, ifup, inetd, init, inotifyd, insmod, install,
        ionice, ip, ipaddr, ipcalc, ipcrm, ipcs, iplink, iproute, iprule,
        iptunnel, kbd_mode, kill, killall, killall5, klogd, last, length, less,
        linuxrc, ln, loadfont, loadkmap, logger, login, logname, logread,
        losetup, ls, lsattr, lsmod, lzmacat, lzop, lzopcat, makedevs, md5sum,
        mdev, mesg, microcom, mkdir, mkdosfs, mkfifo, mkfs.minix, mkfs.vfat,
        mknod, mkpasswd, mkswap, mktemp, modprobe, more, mount, mountpoint, mv,
        nameif, nc, netstat, nice, nmeter, nohup, nslookup, od, openvt, passwd,
        patch, pgrep, pidof, ping, pipe_progress, pivot_root, pkill, poweroff,
        printenv, printf, ps, pscan, pwd, rdate, rdev, readahead, readlink,
        readprofile, realpath, reboot, renice, reset, resize, rm, rmdir, rmmod,
        route, rtcwake, run-parts, runlevel, runsv, runsvdir, rx, sed, seq,
        setconsole, setkeycodes, setlogcons, setsid, setuidgid, sh, sha1sum,
        showkey, slattach, sleep, softlimit, sort, split, start-stop-daemon,
        stat, strings, stty, sulogin, sum, sv, svlogd, swapoff, swapon,
        switch_root, sync, sysctl, syslogd, tac, tail, tar, tcpsvd, tee,
        telnet, telnetd, test, tftp, tftpd, time, timeout, top, touch, tr,
        traceroute, true, tty, ttysize, udhcpc, udhcpd, udpsvd, umount, uname,
        uncompress, uniq, unix2dos, unlzma, unlzop, unzip, uptime, usleep,
        uudecode, uuencode, vconfig, vi, vlock, watch, watchdog, wc, wget,
        which, who, whoami, xargs, yes, zcat, zcip

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