strace Use Example - The Networked Client (Cont.)

Trying to connect to 'nscd' (possibly name server daemon?) via a unix-domain socket:

socket(PF_UNIX, SOCK_STREAM, 0)         = 3
connect(3, {sin_family=AF_UNIX, path="/var/run/.nscd_socket"}, 110) = -1 ENOENT (No such file or directory)
close(3)                                = 0

And then reading the user list file - /etc/passwd:

open("/etc/passwd", O_RDONLY)           = 3
fcntl64(3, F_GETFD)                     = 0
fcntl64(3, F_SETFD, FD_CLOEXEC)         = 0
fstat64(3, {st_mode=S_IFREG|0644, st_size=1296, ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40013000
read(3, "root:x:0:0:root:/root:/bin/tcsh\n"..., 4096) = 1296
close(3)                                = 0
munmap(0x40013000, 4096)                = 0