strace ls /

execve("/usr/bin/ls", ["ls", "/"], [/* 19 vars */]) = 0
brk(NULL)                               = 0x2523000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=48210, ...}) = 0
mmap(NULL, 48210, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fe45544e000
close(3)                                = 0
open("/usr/lib/libcap.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\25\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=17256, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe45544c000
mmap(NULL, 2112504, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fe455034000
mprotect(0x7fe455038000, 2093056, PROT_NONE) = 0
mmap(0x7fe455237000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7fe455237000
close(3)                                = 0
open("/usr/lib/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260\3\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1951744, ...}) = 0
mmap(NULL, 3791152, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fe454c96000
mprotect(0x7fe454e2b000, 2093056, PROT_NONE) = 0
mmap(0x7fe45502a000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x194000) = 0x7fe45502a000
mmap(0x7fe455030000, 14640, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fe455030000
close(3)                                = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe45544a000
arch_prctl(ARCH_SET_FS, 0x7fe45544a700) = 0
mprotect(0x7fe45502a000, 16384, PROT_READ) = 0
mprotect(0x61d000, 4096, PROT_READ)     = 0
mprotect(0x7fe45545a000, 4096, PROT_READ) = 0
munmap(0x7fe45544e000, 48210)           = 0
brk(NULL)                               = 0x2523000
brk(0x2544000)                          = 0x2544000
open("/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2922272, ...}) = 0
mmap(NULL, 2922272, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fe4549cc000
close(3)                                = 0
ioctl(1, TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(1, TIOCGWINSZ, {ws_row=42, ws_col=136, ws_xpixel=0, ws_ypixel=0}) = 0
stat("/", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
open("/", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
getdents(3, /* 21 entries */, 32768)    = 520
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
fstat(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(4, 1), ...}) = 0
ioctl(1, TCGETS, {B38400 opost isig icanon echo ...}) = 0
write(1, "bin  boot  dev\tetc  home  lib\tli"..., 104) = 104
close(1)                                = 0
close(2)                                = 0
exit_group(0)                           = ?
+++ exited with 0 +++