knoppix@Knoppix:/mnt$ strace fdisk /dev/hdb
execve("/sbin/fdisk", ["fdisk", "/dev/hdb"], [/* 28 vars */]) = 0
uname({sys="Linux", node="Knoppix", ...}) = 0
brk(0)                                  = 0x805d000
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f85000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f84000
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=55905, ...}) = 0
mmap2(NULL, 55905, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f76000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/tls/libc.so.6", O_RDONLY)    = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\240O\1"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=1241580, ...}) = 0
mmap2(NULL, 1251484, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7e44000
mmap2(0xb7f6c000, 28672, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x127) = 0xb7f6c000
mmap2(0xb7f73000, 10396, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f73000
close(3)                                = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7e43000
mprotect(0xb7f6c000, 20480, PROT_READ)  = 0
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7e436c0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0
munmap(0xb7f76000, 55905)               = 0
brk(0)                                  = 0x805d000
brk(0x807e000)                          = 0x807e000
open("/dev/hdb", O_RDWR|O_LARGEFILE)    = -1 EACCES (Permission denied)
open("/dev/hdb", O_RDONLY|O_LARGEFILE)  = -1 EACCES (Permission denied)
write(2, "\n", 1
)                       = 1
write(2, "Unable to open /dev/hdb\n", 24Unable to open /dev/hdb
) = 24
exit_group(1)                           = ?
Process 3827 detached
knoppix@Knoppix:/mnt$