strace

pbx02:/etc/asterisk# strace -eopen asterisk -U asterisk
open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
open("/lib/tls/libdl.so.2", O_RDONLY)   = 3
open("/lib/tls/libpthread.so.0", O_RDONLY) = 3
open("/lib/libncurses.so.5", O_RDONLY)  = 3
open("/lib/tls/libm.so.6", O_RDONLY)    = 3
open("/lib/tls/libresolv.so.2", O_RDONLY) = 3
open("/usr/lib/i686/cmov/libssl.so.0.9.7", O_RDONLY) = 3
open("/lib/tls/libc.so.6", O_RDONLY)    = 3
open("/usr/lib/i686/cmov/libcrypto.so.0.9.7", O_RDONLY) = 3
open("/etc/asterisk/asterisk.conf", O_RDONLY) = 3
open("/etc/nsswitch.conf", O_RDONLY)    = 3
open("/etc/ld.so.cache", O_RDONLY)      = 3
open("/lib/tls/libnss_compat.so.2", O_RDONLY) = 3
open("/lib/tls/libnsl.so.1", O_RDONLY)  = 3
open("/etc/ld.so.cache", O_RDONLY)      = 3
open("/lib/tls/libnss_nis.so.2", O_RDONLY) = 3
open("/lib/tls/libnss_files.so.2", O_RDONLY) = 3
open("/etc/passwd", O_RDONLY)           = 3
open("/etc/asterisk/extconfig.conf", O_RDONLY) = 3
open("/var/run/asterisk/asterisk.pid", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 3