getpid()  = 11389
rt_sigprocmask(SIG_SETMASK, [RTMIN], NULL, 8) = 0
rt_sigaction(SIGTSTP, {SIG_DFL}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGTTIN, {SIG_DFL}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGTTOU, {SIG_DFL}, {SIG_DFL}, 8) = 0
dup2(4, 0) = 0
close(4) = 0
stat(".", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat("/bin/grep", {st_mode=S_IFREG|0755, st_size=86560, ...}) = 0
stat("/bin/grep", {st_mode=S_IFREG|0755, st_size=86560, ...}) = 0
rt_sigaction(SIGINT, {SIG_DFL}, {0x43fad0, [], 0x4000000}, 8) = 0
rt_sigaction(SIGQUIT, {SIG_DFL}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGCHLD, {SIG_DFL}, {0x431320, [], 0x4000000}, 8) = 0
execve("/bin/grep", ["grep", "-v", "grep"], [/* 54 vars */]) = 0
uname({sys="Linux", node="xilix64", ...}) = 0
brk(0) = 0x515000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2a9556b000
open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=106745, ...}) = 0
mmap(NULL, 106745, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2a9556c000
close(3) = 0
open("/lib/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\240\310"..., 640) = 640
lseek(3, 624, SEEK_SET) = 624
read(3, "\4\0\0\0\20\0\0\0\1\0\0\0GNU\0\0\0\0\0\2\0\0\0\4\0\0\0"..., 32) = 32
fstat(3, {st_mode=S_IFREG|0755, st_size=2199624, ...}) = 0
mmap(NULL, 2139272, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2a95658000
mprotect(0x2a9576e000, 1000584, PROT_NONE) = 0
mmap(0x2a95858000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x200000) = 0x2a95858000
mmap(0x2a9585e000, 17544, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2a9585e000
close(3) = 0
mprotect(0x2a95858000, 12288, PROT_READ) = 0
munmap(0x2a9556c000, 106745) = 0
open("/dev/urandom", O_RDONLY) = 3
read(3, "\277<\373\240\365<\235\253", 8) = 8
close(3) = 0
brk(0) = 0x515000
brk(0x536000) = 0x536000
fstat(0, {st_mode=S_IFIFO|0600, st_size=0, ...}) = 0
read(0, "11388 pts/0    S+     0:00 grep "..., 32768) = 38
read(0, "", 32768)                       = 0
close(1)                                = 0
exit_group(1)                           = ?