# strace -f w
execve("/usr/bin/w", ["w"], [/* 14 vars */]) = 0
mmap2(NULL, 20, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7ff5000
stat("/etc/ld.so.cache", 0xbfbe0e94)    = -1 ENOENT (No such file or directory)
open("/lib/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/libproc-3.2.7.so", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/libproc-3.2.7.so", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0755, st_size=39760, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7ff4000
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\f&\0\000"..., 4096) = 4096
mmap2(NULL, 122880, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7fd6000
mmap2(0xb7fd6000, 38048, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0) = 0xb7fd6000
mmap2(0xb7fe0000, 2896, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x9) = 0xb7fe0000
mmap2(0xb7fe1000, 76888, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7fe1000
close(3)                                = 0
munmap(0xb7ff4000, 4096)                = 0
open("/lib/libgcc_s.so.1", O_RDONLY)    = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=33150, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7ff4000
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0H\25\0\000"..., 4096) = 4096
mmap2(NULL, 36864, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7fcd000
mmap2(0xb7fcd000, 32476, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0) = 0xb7fcd000
mmap2(0xb7fd5000, 382, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x8) = 0xb7fd5000
close(3)                                = 0
munmap(0xb7ff4000, 4096)                = 0
open("/lib/libc.so.0", O_RDONLY)        = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=299325, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7ff4000
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\240\355"..., 4096) = 4096
mmap2(NULL, 319488, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f7f000
mmap2(0xb7f7f000, 293860, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0) = 0xb7f7f000
mmap2(0xb7fc7000, 4413, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x48) = 0xb7fc7000
mmap2(0xb7fc9000, 15832, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7fc9000
close(3)                                = 0
munmap(0xb7ff4000, 4096)                = 0
open("/lib/libc.so.0", O_RDONLY)        = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=299325, ...}) = 0
close(3)                                = 0
open("/lib/libgcc_s.so.1", O_RDONLY)    = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=33150, ...}) = 0
close(3)                                = 0
open("/lib/libc.so.0", O_RDONLY)        = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=299325, ...}) = 0
close(3)                                = 0
ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
Process 22845 detached