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Old 02-02-2010, 10:08 AM   #1
linuxwang
LQ Newbie
 
Registered: Sep 2009
Posts: 7

Rep: Reputation: 0
Busybox and dropbear related problem


I am running busybox. After adding dropbear, it gives me an error that dropbear not found, but it is under /sbin. Here is the shell commands:

# pwd
/sbin
# ls -l drop*
-rwxr-xr-x 1 root root 256709 Feb 1 03:44 dropbear
# ./dropbear
/bin/sh: ./dropbear: not found
#

Do I have to put dropbear as a part of busybox? Thanks.

Allan
 
Old 02-02-2010, 12:07 PM   #2
AwesomeMachine
Senior Member
 
Registered: Jan 2005
Location: USA and Italy
Distribution: Debian testing/sid; OpenSuSE; Fedora
Posts: 1,923

Rep: Reputation: 278Reputation: 278Reputation: 278
Try using the canonical path: # /sbin/dropbear. If that doesn't work, try it as root. If it works as root, but you want it to run under a lower privilege level, change the permissions on the file: dropbear to o+rw: chmod o+rw /sbin/dropbear. See if that works. And busy box is not a shell. It's a program that has many of the same functions as the programs in gnu coreutils. Your shell is /bin/sh.
 
Old 02-03-2010, 12:19 AM   #3
linuxwang
LQ Newbie
 
Registered: Sep 2009
Posts: 7

Original Poster
Rep: Reputation: 0
I tried both canonical form /sbin/dropbear and chown o+w, but it still complain file not found. From the ls -l list, /bin/sh is the soft link to busybox. dropbear's owner is root and I try to execute it under root. For some reason, dropbear can not be executed:

# ls -l
lrwxrwxrwx 1 root root 12 Feb 3 01:54 addgroup -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 adduser -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ash -> /bin/busybox
-rwxr-xr-x 1 root root 1963264 Feb 2 01:36 busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 cat -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 catv -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 chattr -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 chgrp -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 chmod -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 chown -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 cp -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 cpio -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 cttyhack -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 date -> /bin/busybox
-rwxr-xr-x 1 root root 252076 Feb 1 03:44 dbclient
lrwxrwxrwx 1 root root 12 Feb 3 01:54 dd -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 delgroup -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 deluser -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 df -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 dmesg -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 dnsdomainname -> /bin/busybox
-rwxr-xr-x 1 root root 83005 Feb 1 03:44 dropbearconvert
-rwxr-xr-x 1 root root 85083 Feb 1 03:44 dropbearkey
lrwxrwxrwx 1 root root 12 Feb 3 01:54 dumpkmap -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 echo -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ed -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 egrep -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 false -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 fdflush -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 fgrep -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 fsync -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 getopt -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 grep -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 gunzip -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 gzip -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 hostname -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 hush -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ionice -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ip -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ipaddr -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ipcalc -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 iplink -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 iproute -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 iprule -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 iptunnel -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 kill -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 linux32 -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 linux64 -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ln -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 login -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ls -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 lsattr -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 lzop -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 makemime -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 mkdir -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 mknod -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 mktemp -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 more -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 mount -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 mountpoint -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 msh -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 mt -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 mv -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 netstat -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 nice -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 pidof -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ping -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ping6 -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 pipe_progress -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 printenv -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ps -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 pwd -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 reformime -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 rm -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 rmdir -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 run-parts -> /bin/busybox
-rwxr-xr-x 1 root root 49513 Feb 1 03:44 scp
lrwxrwxrwx 1 root root 12 Feb 3 01:54 scriptreplay -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 sed -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 setarch -> /bin/busybox
lrwxrwxrwx 1 root root 7 Feb 3 00:12 sh -> busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 sleep -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 stat -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 stty -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 su -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 sync -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 tar -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 touch -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 true -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 umount -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 uname -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 uncompress -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 usleep -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 vi -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 watch -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 zcat -> /bin/busybox
 
Old 02-03-2010, 12:20 AM   #4
linuxwang
LQ Newbie
 
Registered: Sep 2009
Posts: 7

Original Poster
Rep: Reputation: 0
# cd /sbin
# ls -l
lrwxrwxrwx 1 root root 12 Feb 3 01:54 adjtimex -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 arp -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 blkid -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 depmod -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 devmem -> /bin/busybox
-rwxr-xrwx 1 root root 256709 Feb 1 03:44 dropbear
lrwxrwxrwx 1 root root 12 Feb 3 01:54 fbsplash -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 fdisk -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 findfs -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 freeramdisk -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 fsck -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 fsck.minix -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 getty -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 halt -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 hdparm -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 hwclock -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ifconfig -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ifdown -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ifenslave -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 ifup -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 init -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 insmod -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 klogd -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 loadkmap -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 logread -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 losetup -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 lsmod -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 makedevs -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 man -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 mdev -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 mkdosfs -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 mkfs.minix -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 mkfs.vfat -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 mkswap -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 modprobe -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 nameif -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 pivot_root -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 poweroff -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 raidautorun -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 reboot -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 rmmod -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 route -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 runlevel -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 setconsole -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 slattach -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 start-stop-daemon -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 sulogin -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 swapoff -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 swapon -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 switch_root -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 sysctl -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 syslogd -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 tunctl -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 udhcpc -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 vconfig -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 watchdog -> /bin/busybox
lrwxrwxrwx 1 root root 12 Feb 3 01:54 zcip -> /bin/busybox
 
  


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