Bash: /bin/ls: No such file or directory

  File: `/bin/ls'
  Size: 36692         Blocks: 72         IO Block: 4096   regular file
Device: 902h/2306d    Inode: 52168445    Links: 1
Access: (0755/-rwxr-xr-x)  Uid: (    0/    root)   Gid: (    0/    root)
Access: 2011-12-13 14:51:02.000000000 +0100
Modify: 2003-07-15 09:44:05.000000000 +0200
Change: 2011-12-13 15:01:46.000000000 +0100

bash: strace: command not found

aptitude install strace

execve("/bin/ls", ["/bin/ls"], [/* 18 vars */]) = -1 ENOENT (No such file or directory)
dup(2)                                  = 3
fcntl(3, F_GETFL)                       = 0x8002 (flags O_RDWR|O_LARGEFILE)
fstat(3, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f100240e000
lseek(3, 0, SEEK_CUR)                   = -1 ESPIPE (Illegal seek)
write(3, "strace: exec: No such file or di"..., 40strace: exec: No such file or directory
) = 40
close(3)                                = 0
munmap(0x7f100240e000, 4096)            = 0
exit_group(1)                           = ?

apt-get install ffmpeg
apt-get install imagemagick
deb ftp://ftp.debian-multimedia.org/ squeeze main
aptitude update
aptitude install debian-multimedia-keyring

not a dynamic executable

ELF Header:
  Magic:   7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00 
  Class:                             ELF32
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            UNIX - System V
  ABI Version:                       0
  Type:                              EXEC (Executable file)
  Machine:                           Intel 80386
  Version:                           0x1
  Entry point address:               0x8049158
  Start of program headers:          52 (bytes into file)
  Start of section headers:          35692 (bytes into file)
  Flags:                             0x0
  Size of this header:               52 (bytes)
  Size of program headers:           32 (bytes)
  Number of program headers:         6
  Size of section headers:           40 (bytes)
  Number of section headers:         25
  Section header string table index: 24

Package: coreutils                       
Essential: yes
State: installed
Automatically installed: no
Version: 8.5-1
Priority: required
Section: utils
Maintainer: Michael Stone <mstone@debian.org>
Uncompressed Size: 14.2 M
Architecture: amd64
Compressed Size: 5,102 k
Filename: pool/main/c/coreutils/coreutils_8.5-1_amd64.deb
MD5sum: 77aff0d952e7e7a29405932f8f805f15
Archive: stable, stable, now
PreDepends: libacl1 (>= 2.2.11-1), libattr1 (>= 2.4.41-1), libc6 (>= 2.6), libselinux1 (>= 1.32)
Conflicts: timeout
Replaces: mktemp, timeout
Description: GNU core utilities
 This package contains the basic file, shell and text manipulation utilities which are expected to exist on every operating system. 
 
 Specifically, this package includes: arch base64 basename cat chcon chgrp chmod chown chroot cksum comm cp csplit cut date dd df dir dircolors dirname du
 echo env expand expr factor false flock fmt fold groups head hostid id install join link ln logname ls md5sum mkdir mkfifo mknod mktemp mv nice nl nohup
 nproc od paste pathchk pinky pr printenv printf ptx pwd readlink rm rmdir runcon sha*sum seq shred sleep sort split stat stty sum sync tac tail tee test
 timeout touch tr true truncate tsort tty uname unexpand uniq unlink users vdir wc who whoami yes
Homepage: http://gnu.org/software/coreutils

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
 apache2 : Depends: apache2-mpm-worker (= 2.2.16-6+squeeze4) but it is not going to be installed or
                    apache2-mpm-prefork (= 2.2.16-6+squeeze4) but it is not going to be installed or
                    apache2-mpm-event (= 2.2.16-6+squeeze4) but it is not going to be installed or
                    apache2-mpm-itk (= 2.2.16-6+squeeze4) but it is not going to be installed
           Depends: apache2.2-common (= 2.2.16-6+squeeze4) but it is not going to be installed
 debconf : PreDepends: perl-base (>= 5.6.1-4) but it is not going to be installed
 php5 : Depends: libapache2-mod-php5 (>= 5.3.3-7+squeeze3) but it is not going to be installed or
                 libapache2-mod-php5filter (>= 5.3.3-7+squeeze3) but it is not going to be installed or
                 php5-cgi (>= 5.3.3-7+squeeze3) but it is not going to be installed
 php5-sqlite : Depends: phpapi-20090626
 php5-xsl : Depends: phpapi-20090626
E: Broken packages

The following packages will be REINSTALLED:
  coreutils 
0 packages upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 5,102 kB of archives. After unpacking 0 B will be used.
Get:1 http://mirror.hetzner.de/debian/packages/ squeeze/main coreutils amd64 8.5-1 [5,102 kB]
Fetched 5,102 kB in 0s (31.9 MB/s)
(Reading database ... 88532 files and directories currently installed.)
Preparing to replace coreutils 8.5-1 (using .../coreutils_8.5-1_amd64.deb) ...
Unpacking replacement coreutils ...
dpkg: error processing /var/cache/apt/archives/coreutils_8.5-1_amd64.deb (--unpack):
 unable to create `/bin/mktemp.dpkg-new' (while processing `./bin/mktemp'): Permission denied
configured to not write apport reports
                                      dpkg-deb: subprocess paste killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/coreutils_8.5-1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install.  Trying to recover: