Invocation strace |aa0000|{{options}}| |0000ff|{{program}}| |00aa00|{{arguments}}| Example strace |aa0000|-o /tmp/strace.log| |0000ff|php| |00aa00|-v| Output execve("/usr/local/php/7.0dev/bin/php", ["php", "-v"], [/* 49 vars */]) = 0 brk(NULL) = 0x1536000 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) mmap(NULL, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb019780000 access("/etc/ld.so.preload", R_OK) = 0 open("/etc/ld.so.preload", O_RDONLY|O_CLOEXEC) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0 close(3) = 0 open("/usr/lib/x86_64-linux-gnu/tls/x86_64/libcrypt.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) …