# strace ifconfig eth0 192.168.20.108 netmask 255.255.255.0 up

execve("/sbin/ifconfig", ["ifconfig", "eth0", "192.168.20.108", "netmask", "255.255.255.0", "up"], [/* 23 vars */]) = 0
uname({sys="Linux", node="arrgh", ...}) = 0
brk(0)                                  = 0x1001e000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x30018000
open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=13130, ...}) = 0
mmap(NULL, 13130, PROT_READ, MAP_PRIVATE, 3, 0) = 0x30019000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\1\312"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1256436, ...}) = 0
mmap(0xfeb5000, 1288532, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xfeb5000
mprotect(0, 117076, PROT_NONE)          = -1 ENOMEM (Cannot allocate memory)
mmap(0xffd5000, 102400, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0x110000) = 0xffd5000
mmap(0xffee000, 6484, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffee000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x3001d000
munmap(0x30019000, 13130)               = 0
uname({sys="Linux", node="arrgh", ...}) = 0
access("/proc/net", R_OK)               = 0
access("/proc/net/unix", R_OK)          = 0
socket(PF_UNIX, SOCK_DGRAM, 0)          = 3
socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 4
access("/proc/net/if_inet6", R_OK)      = 0
socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP) = 5
access("/proc/net/ax25", R_OK)          = -1 ENOENT (No such file or directory)
access("/proc/net/nr", R_OK)            = -1 ENOENT (No such file or directory)
access("/proc/net/ipx", R_OK)           = -1 ENOENT (No such file or directory)
access("/proc/net/appletalk", R_OK)     = -1 ENOENT (No such file or directory)
access("/proc/net/x25", R_OK)           = -1 ENOENT (No such file or directory)
ioctl(4, 0x8916, 0x7ffff5d0)            = 0
ioctl(4, 0x8913, 0x7ffff4f0)            = 0
ioctl(4, 0x8914, 0x7ffff4f0)            = 0
ioctl(4, 0x891c, 0x7ffff5d0)            = 0
ioctl(4, 0x8913, 0x7ffff4f0)            = 0
ioctl(4, 0x8914, 0x7ffff4f0)            = 0
exit_group(0)                           = ?