strace Use Example - The Networked Client (Cont.)

We now get connected to the FTP server itself:

socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 3
connect(3, {sin_family=AF_INET, sin_port=htons(21), sin_addr=inet_addr("192.114.47.1")}}, 16) = 0
getsockname(3, {sin_family=AF_INET, sin_port=htons(32875), sin_addr=inet_addr("192.117.103.230")}}, [16]) = 0
setsockopt(3, SOL_IP, IP_TOS, [16], 4)  = 0
fcntl64(3, F_GETFL)                     = 0x2 (flags O_RDWR)
fstat64(3, {st_mode=S_IFSOCK|0777, st_size=0, ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40013000
_llseek(3, 0, 0xbfffe540, SEEK_CUR)     = -1 ESPIPE (Illegal seek)
fcntl64(3, F_GETFL)                     = 0x2 (flags O_RDWR)
brk(0x8069000)                          = 0x8069000
fstat64(3, {st_mode=S_IFSOCK|0777, st_size=0, ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40014000
_llseek(3, 0, 0xbfffe540, SEEK_CUR)     = -1 ESPIPE (Illegal seek)
fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 6), ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40015000
write(1, "Connected to actcom.co.il (192.1"..., 42) = 42

The last 'write' is to STDOUT (normally file descriptor 1).