strace 命令查看跟踪任务执行
2015-08-24 23:00
302 查看
strace
可以跟踪命令的运行过程
在性能调优方面很有用处
strace ls
execve("/bin/ls", ["ls"], [/* 69 vars */]) = 0
brk(0) = 0xd92000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c90000
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=97579, ...}) = 0
mmap(NULL, 97579, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f1ef2c78000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libselinux.so.1", 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\300[\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=138400, ...}) = 0
mmap(NULL, 2242448, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef284b000
mprotect(0x7f1ef286c000, 2093056, PROT_NONE) = 0
mmap(0x7f1ef2a6b000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x20000) = 0x7f1ef2a6b000
mmap(0x7f1ef2a6d000, 6032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2a6d000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libacl.so.1", 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`\34\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=35264, ...}) = 0
mmap(NULL, 2130432, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef2642000
mprotect(0x7f1ef2649000, 2097152, PROT_NONE) = 0
mmap(0x7f1ef2849000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7000) = 0x7f1ef2849000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/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`\v\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1869392, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c77000
mmap(NULL, 3972864, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef2278000
mprotect(0x7f1ef2438000, 2097152, PROT_NONE) = 0
mmap(0x7f1ef2638000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1c0000) = 0x7f1ef2638000
mmap(0x7f1ef263e000, 16128, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f1ef263e000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libpcre.so.3", 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\0\26\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=444344, ...}) = 0
mmap(NULL, 2539880, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef200b000
mprotect(0x7f1ef2077000, 2093056, PROT_NONE) = 0
mmap(0x7f1ef2276000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6b000) = 0x7f1ef2276000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libdl.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`\16\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=14592, ...}) = 0
mmap(NULL, 2109712, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef1e07000
mprotect(0x7f1ef1e0a000, 2093056, PROT_NONE) = 0
mmap(0x7f1ef2009000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f1ef2009000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libattr.so.1", 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\300\20\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=18624, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c76000
mmap(NULL, 2113760, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef1c02000
mprotect(0x7f1ef1c06000, 2093056, PROT_NONE) = 0
mmap(0x7f1ef1e05000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7f1ef1e05000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libpthread.so.0", 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\340`\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=142080, ...}) = 0
mmap(NULL, 2217232, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef19e4000
mprotect(0x7f1ef19fc000, 2097152, PROT_NONE) = 0
mmap(0x7f1ef1bfc000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18000) = 0x7f1ef1bfc000
mmap(0x7f1ef1bfe000, 13584, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f1ef1bfe000
close(3) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c75000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c73000
arch_prctl(ARCH_SET_FS, 0x7f1ef2c73800) = 0
mprotect(0x7f1ef2638000, 16384, PROT_READ) = 0
mprotect(0x7f1ef1bfc000, 4096, PROT_READ) = 0
mprotect(0x7f1ef1e05000, 4096, PROT_READ) = 0
mprotect(0x7f1ef2009000, 4096, PROT_READ) = 0
mprotect(0x7f1ef2276000, 4096, PROT_READ) = 0
mprotect(0x7f1ef2849000, 4096, PROT_READ) = 0
mprotect(0x7f1ef2a6b000, 4096, PROT_READ) = 0
mprotect(0x61b000, 4096, PROT_READ) = 0
mprotect(0x7f1ef2c92000, 4096, PROT_READ) = 0
munmap(0x7f1ef2c78000, 97579) = 0
set_tid_address(0x7f1ef2c73ad0) = 13886
set_robust_list(0x7f1ef2c73ae0, 24) = 0
rt_sigaction(SIGRTMIN, {0x7f1ef19e9bb0, [], SA_RESTORER|SA_SIGINFO, 0x7f1ef19f4d10}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0x7f1ef19e9c40, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7f1ef19f4d10}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
statfs("/sys/fs/selinux", 0x7ffef18a7ad0) = -1 ENOENT (No such file or directory)
statfs("/selinux", 0x7ffef18a7ad0) = -1 ENOENT (No such file or directory)
brk(0) = 0xd92000
brk(0xdb3000) = 0xdb3000
open("/proc/filesystems", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c8f000
read(3, "nodev\tsysfs\nnodev\trootfs\nnodev\tr"..., 1024) = 310
read(3, "", 1024) = 0
close(3) = 0
munmap(0x7f1ef2c8f000, 4096) = 0
open("/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=7216688, ...}) = 0
mmap(NULL, 7216688, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f1ef1302000
close(3) = 0
ioctl(1, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(1, TIOCGWINSZ, {ws_row=24, ws_col=80, ws_xpixel=0, ws_ypixel=0}) = 0
openat(AT_FDCWD, ".", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 3
getdents(3, /* 38 entries */, 32768) = 1248
getdents(3, /* 0 entries */, 32768) = 0
close(3) = 0
fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 5), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c8f000
write(1, "Desktop Downloads\t Music "..., 52Desktop Downloads
Music Public Videos
) = 52
write(1, "Documents examples.desktop Pic"..., 58Documents examples.desktop Pictures Templates Virtual
) = 58
close(1) = 0
munmap(0x7f1ef2c8f000, 4096) = 0
close(2) = 0
exit_group(0) = ?
+++ exited with 0 +++
可以跟踪命令的运行过程
在性能调优方面很有用处
strace ls
execve("/bin/ls", ["ls"], [/* 69 vars */]) = 0
brk(0) = 0xd92000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c90000
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=97579, ...}) = 0
mmap(NULL, 97579, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f1ef2c78000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libselinux.so.1", 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\300[\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=138400, ...}) = 0
mmap(NULL, 2242448, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef284b000
mprotect(0x7f1ef286c000, 2093056, PROT_NONE) = 0
mmap(0x7f1ef2a6b000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x20000) = 0x7f1ef2a6b000
mmap(0x7f1ef2a6d000, 6032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2a6d000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libacl.so.1", 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`\34\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=35264, ...}) = 0
mmap(NULL, 2130432, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef2642000
mprotect(0x7f1ef2649000, 2097152, PROT_NONE) = 0
mmap(0x7f1ef2849000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7000) = 0x7f1ef2849000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/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`\v\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1869392, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c77000
mmap(NULL, 3972864, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef2278000
mprotect(0x7f1ef2438000, 2097152, PROT_NONE) = 0
mmap(0x7f1ef2638000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1c0000) = 0x7f1ef2638000
mmap(0x7f1ef263e000, 16128, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f1ef263e000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libpcre.so.3", 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\0\26\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=444344, ...}) = 0
mmap(NULL, 2539880, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef200b000
mprotect(0x7f1ef2077000, 2093056, PROT_NONE) = 0
mmap(0x7f1ef2276000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6b000) = 0x7f1ef2276000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libdl.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`\16\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=14592, ...}) = 0
mmap(NULL, 2109712, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef1e07000
mprotect(0x7f1ef1e0a000, 2093056, PROT_NONE) = 0
mmap(0x7f1ef2009000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f1ef2009000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libattr.so.1", 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\300\20\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=18624, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c76000
mmap(NULL, 2113760, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef1c02000
mprotect(0x7f1ef1c06000, 2093056, PROT_NONE) = 0
mmap(0x7f1ef1e05000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7f1ef1e05000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libpthread.so.0", 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\340`\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=142080, ...}) = 0
mmap(NULL, 2217232, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1ef19e4000
mprotect(0x7f1ef19fc000, 2097152, PROT_NONE) = 0
mmap(0x7f1ef1bfc000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18000) = 0x7f1ef1bfc000
mmap(0x7f1ef1bfe000, 13584, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f1ef1bfe000
close(3) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c75000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c73000
arch_prctl(ARCH_SET_FS, 0x7f1ef2c73800) = 0
mprotect(0x7f1ef2638000, 16384, PROT_READ) = 0
mprotect(0x7f1ef1bfc000, 4096, PROT_READ) = 0
mprotect(0x7f1ef1e05000, 4096, PROT_READ) = 0
mprotect(0x7f1ef2009000, 4096, PROT_READ) = 0
mprotect(0x7f1ef2276000, 4096, PROT_READ) = 0
mprotect(0x7f1ef2849000, 4096, PROT_READ) = 0
mprotect(0x7f1ef2a6b000, 4096, PROT_READ) = 0
mprotect(0x61b000, 4096, PROT_READ) = 0
mprotect(0x7f1ef2c92000, 4096, PROT_READ) = 0
munmap(0x7f1ef2c78000, 97579) = 0
set_tid_address(0x7f1ef2c73ad0) = 13886
set_robust_list(0x7f1ef2c73ae0, 24) = 0
rt_sigaction(SIGRTMIN, {0x7f1ef19e9bb0, [], SA_RESTORER|SA_SIGINFO, 0x7f1ef19f4d10}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0x7f1ef19e9c40, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7f1ef19f4d10}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
statfs("/sys/fs/selinux", 0x7ffef18a7ad0) = -1 ENOENT (No such file or directory)
statfs("/selinux", 0x7ffef18a7ad0) = -1 ENOENT (No such file or directory)
brk(0) = 0xd92000
brk(0xdb3000) = 0xdb3000
open("/proc/filesystems", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c8f000
read(3, "nodev\tsysfs\nnodev\trootfs\nnodev\tr"..., 1024) = 310
read(3, "", 1024) = 0
close(3) = 0
munmap(0x7f1ef2c8f000, 4096) = 0
open("/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=7216688, ...}) = 0
mmap(NULL, 7216688, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f1ef1302000
close(3) = 0
ioctl(1, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(1, TIOCGWINSZ, {ws_row=24, ws_col=80, ws_xpixel=0, ws_ypixel=0}) = 0
openat(AT_FDCWD, ".", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 3
getdents(3, /* 38 entries */, 32768) = 1248
getdents(3, /* 0 entries */, 32768) = 0
close(3) = 0
fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 5), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1ef2c8f000
write(1, "Desktop Downloads\t Music "..., 52Desktop Downloads
Music Public Videos
) = 52
write(1, "Documents examples.desktop Pic"..., 58Documents examples.desktop Pictures Templates Virtual
) = 58
close(1) = 0
munmap(0x7f1ef2c8f000, 4096) = 0
close(2) = 0
exit_group(0) = ?
+++ exited with 0 +++
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