The command ldd can be used to find out which libraries would load the dynamic executable specified as argument:
$ ldd /bin/ls linux-gate.so.1 => (0xffffe000) librt.so.1 => /lib/tls/librt.so.1 (0x4002b000) libacl.so.1 => /lib/libacl.so.1 (0x40033000) libselinux.so.1 => /lib/libselinux.so.1 (0x40039000) libc.so.6 => /lib/tls/libc.so.6 (0x40048000) libpthread.so.0 => /lib/tls/libpthread.so.0 (0x4015d000) /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000) libattr.so.1 => /lib/libattr.so.1 (0x4016d000)
Static binaries do not need any dynamic libraries:
$ ldd /bin/sash not a dynamic executable $ file /bin/sash /bin/sash: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), \ for GNU/Linux 2.2.5, statically linked, stripped