텔넷 쓰려고 iptime 펌웨어 건들고 있는데.....

schoi0@sel-schoi0-d2 IPTIME]$ sed "s@hsqs@\nsquash\n@g" < a5004ns_kr_9_986.bin > x
 
[schoi0@sel-schoi0-d2 IPTIME]$ grep -abo squash x
2082537:squash
 
[schoi0@sel-schoi0-d2 IPTIME]$ dd if=a5004ns_kr_9_986.bin of=x bs=2082536 skip=1 
10+1 records in
10+1 records out
22210896 bytes (22 MB) copied, 0.0132369 s, 1.7 GB/s
 
[schoi0@sel-schoi0-d2 IPTIME]$ file x
x: Squashfs filesystem, little endian, version 4.0, 22207634 bytes, 1637 inodes, blocksize: 131072 bytes, created: Mon Dec 26 09:42:17 2016
[schoi0@sel-schoi0-d2 IPTIME]$ 
[schoi0@sel-schoi0-d2 IPTIME]$ mkdir t
[schoi0@sel-schoi0-d2 IPTIME]$ sudo mount x t -oloop
[schoi0@sel-schoi0-d2 IPTIME]$ find t/ -executable -name "*telnet*"
t/usr/sbin/telnetd
 
[schoi0@sel-schoi0-d2 IPTIME]$ t/usr/sbin/telnetd 
/lib/ld-uClibc.so.0: No such file or directory
[schoi0@sel-schoi0-d2 IPTIME]$ 
[schoi0@sel-schoi0-d2 IPTIME]$ QEMU_LD_PREFIX=`pwd`/t t/usr/sbin/telnetd 
telnetd: applet not found
[schoi0@sel-schoi0-d2 IPTIME]$ 
[schoi0@sel-schoi0-d2 IPTIME]$ ls -l t/usr/sbin/telnetd 
lrwxrwxrwx. 1 root root 17 10월 15  2015 t/usr/sbin/telnetd -> ../../bin/busybox
[schoi0@sel-schoi0-d2 IPTIME]$ 
[schoi0@sel-schoi0-d2 IPTIME]$ QEMU_LD_PREFIX=`pwd`/t t/bin/busybox
BusyBox v1.7.2 (2016-01-06 09:59:42 KST) multi-call binary
Copyright (C) 1998-2006  Erik Andersen, Rob Landley, 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, arp, ash, basename, bunzip2,
	bzcat, cat, chgrp, chmod, chown, clear, cp, cut, date,
	dd, delgroup, deluser, df, dirname, dmesg, du, echo, egrep,
	env, expr, false, fgrep, find, free, grep, gunzip, gzip,
	halt, head, hostid, hostname, hwclock, id, ifconfig, insmod,
	kill, killall, klogd, less, ln, logread, losetup, ls,
	lsmod, lzmacat, mkdir, mkfifo, mknod, mkswap, more, mount,
	mv, netstat, passwd, pidof, ping, ping6, pivot_root, poweroff,
	printf, ps, pwd, rdate, reboot, reset, rm, rmdir, rmmod,
	route, sed, sh, sleep, swapoff, swapon, sync, sysctl,
	syslogd, tail, tar, test, time, top, touch, true, umount,
	uname, uncompress, unlzma, unzip, uptime, usleep, vi,
	wget, xargs, yes, zcat, flash_eraseall
 
[schoi0@sel-schoi0-d2 IPTIME]$ 
[schoi0@sel-schoi0-d2 IPTIME]$ QEMU_LD_PREFIX=`pwd`/t t/bin/busybox | grep telnet
[schoi0@sel-schoi0-d2 IPTIME]$ 
[schoi0@sel-schoi0-d2 IPTIME]$ file t/bin/busybox
t/bin/busybox: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked (uses shared libs), stripped
[schoi0@sel-schoi0-d2 IPTIME]$
 
[schoi0@sel-schoi0-d2 IPTIME]$ curl -s <a href="https://busybox.net/downloads/binaries/latest/busybox-armv7l" rel="nofollow">https://busybox.net/downloads/binaries/latest/busybox-armv7l</a> > busybox
[schoi0@sel-schoi0-d2 IPTIME]$ 
[schoi0@sel-schoi0-d2 IPTIME]$ file busybox
busybox: ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
[schoi0@sel-schoi0-d2 IPTIME]$ 
[schoi0@sel-schoi0-d2 IPTIME]$ chmod u+x busybox 
[schoi0@sel-schoi0-d2 IPTIME]$ ls -l busybox 
-rwxrw-r--. 1 schoi0 schoi0 1109128 12월 29 22:37 busybox
 
[schoi0@sel-schoi0-d2 IPTIME]$ for cmd in `env QEMU_LD_PREFIX=$PWD/t t/bin/busybox | sed -n "/\[\[/,/flash_eraseall/p"|tr -d " \t\n"|tr "," " "`; do [ ${cmd:0:1} = "[" ] && cmd="\\["; ./busybox | grep $cmd >/dev/null || echo "command \"$cmd\" is not in your new busybox."; done
command "lzmacat" is not in your new busybox.
command "uncompress" is not in your new busybox.
command "flash_eraseall" is not in your new busybox.
 
[schoi0@sel-schoi0-d2 IPTIME]$ sudo umount t