So by any other command the executable file exists, yet when I try to execute it, it claims it is not there.It is not a special character in the name because I renamed it though a cat. And it seems to be a binary for the correct architecture... seems, I guess the question is, what else throws tat error message BESIDES... the file not being there, because it obviously IS!ldd xls    linux-gate.so.1 =>  (0xb77bc000)    libQtGui.so.4 => /usr/lib/i386-linux-gnu/libQtGui.so.4 (0xb6cc2000)    libpng12.so.0 => /lib/i386-linux-gnu/libpng12.so.0 (0xb6c98000)    libSM.so.6 => /usr/lib/i386-linux-gnu/libSM.so.6 (0xb6c8f000)    libICE.so.6 => /usr/lib/i386-linux-gnu/libICE.so.6 (0xb6c76000)    libXrender.so.1 => /usr/lib/i386-linux-gnu/libXrender.so.1 (0xb6c6d000)    libfreetype.so.6 => /usr/lib/i386-linux-gnu/libfreetype.so.6 (0xb6bd1000)    libfontconfig.so.1 => /usr/lib/i386-linux-gnu/libfontconfig.so.1 (0xb6b9b000)    libXext.so.6 => /usr/lib/i386-linux-gnu/libXext.so.6 (0xb6b88000)    libX11.so.6 => /usr/lib/i386-linux-gnu/libX11.so.6 (0xb6a50000)    libm.so.6 => /lib/i386-linux-gnu/i686/cmov/libm.so.6 (0xb6a2a000)    libQtSql.so.4 => /usr/lib/i386-linux-gnu/libQtSql.so.4 (0xb69ea000)    libQtCore.so.4 => /usr/lib/i386-linux-gnu/libQtCore.so.4 (0xb6704000)    libz.so.1 => /lib/i386-linux-gnu/libz.so.1 (0xb66ea000)    libgthread-2.0.so.0 => /usr/lib/i386-linux-gnu/libgthread-2.0.so.0 (0xb66e7000)    libglib-2.0.so.0 => /lib/i386-linux-gnu/libglib-2.0.so.0 (0xb65ea000)    libgobject-2.0.so.0 => /usr/lib/i386-linux-gnu/libgobject-2.0.so.0 (0xb6598000)    librt.so.1 => /lib/i386-linux-gnu/i686/cmov/librt.so.1 (0xb658f000)    libpthread.so.0 => /lib/i386-linux-gnu/i686/cmov/libpthread.so.0 (0xb6575000)    libdl.so.2 => /lib/i386-linux-gnu/i686/cmov/libdl.so.2 (0xb6571000)    libstdc++.so.6 => /usr/lib/i386-linux-gnu/libstdc++.so.6 (0xb6485000)    libgcc_s.so.1 => /lib/i386-linux-gnu/libgcc_s.so.1 (0xb6468000)    libc.so.6 => /lib/i386-linux-gnu/i686/cmov/libc.so.6 (0xb6305000)    libaudio.so.2 => /usr/lib/i386-linux-gnu/libaudio.so.2 (0xb62ea000)    libuuid.so.1 => /lib/i386-linux-gnu/libuuid.so.1 (0xb62e4000)    libexpat.so.1 => /lib/i386-linux-gnu/libexpat.so.1 (0xb62ba000)    libxcb.so.1 => /usr/lib/i386-linux-gnu/libxcb.so.1 (0xb6297000)    /lib/ld-lsb.so.3 => /lib/ld-linux.so.2 (0xb77bd000)    libpcre.so.3 => /lib/i386-linux-gnu/libpcre.so.3 (0xb6258000)    libffi.so.5 => /usr/lib/i386-linux-gnu/libffi.so.5 (0xb624f000)    libXt.so.6 => /usr/lib/i386-linux-gnu/libXt.so.6 (0xb61f1000)    libXau.so.6 => /usr/lib/i386-linux-gnu/libXau.so.6 (0xb61ee000)    libXdmcp.so.6 => /usr/lib/i386-linux-gnu/libXdmcp.so.6 (0xb61e8000)uname -m (Also, my distribution is Debian wheezy.)i686file xlsxls: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV),      dynamically linked (uses shared libs), for GNU/Linux 2.6.15,     BuildID[sha1]=0xa9786f61b371a683ae4306792f95e0636c288883, not strippedls -ld xls-rwxr-xr-x 1 root root 4634064 May 20 14:35 xlscatroot@pc170:# cat xls > zlsroot@pc170:# ./zls-su: ./zls: Permission deniedroot@pc170:# chmod +x zlsroot@pc170:# ./zls-su: ./zls: No such file or directorytimeroot@pc170:# time ./zls-su: ./zls: No such file or directoryreal    0m0.002suser    0m0.000ssys     0m0.000s
No such file or directory on an executable, yet file exists and ldd reports all libraries present
linux;executable