bash$ ltrace -i -o hands-on.lt hands-on Ready> 1+2 Result: 3 Ready> q bash$ cat hands_on.lt [08048939] __libc_start_main(0x080489c8, 1, 0xbffff774, 0x080487e0, 0x08048f90 [08048b0f] _ZNSt8ios_base4InitC1Ev(0x0804a47c, 0xbffff6d4, 0x4006114a, 1, 65535) = 3 [08048b23] __cxa_atexit(0x08048b28, 0, 0x0804a054, 1, 65535) = 0 [080489e4] __xstat(3, "hands-on", 0xbffff6a0) = 0 [08048be0] time(NULL) = 1062082695 [08048c02] _ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(0x0804a348, 0x08048fc9, 0x40014020, 0xbffff774, 0xbffff718) = 0x0804a348 [08048c11] _ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RSbIS4_S5_T1_E(0x0804a3d8, 0xbffff6a4, 0x40014020, 0xbffff774, 0xbffff718) = 0x0804a3d8 [08048d40] _ZNSs12_M_leak_hardEv(0xbffff6a4, 3, 10, 0x01048447, 0x400d31e0) = 0x0804a51c [08048cf6] isdigit(49, 3, 10, 0x01048447, 0x400d31e0) = 2048 [08048d65] isdigit(49, 3, 10, 0x01048447, 0x400d31e0) = 2048 [08048d65] isdigit(43, 3, 10, 0x01048447, 0x400d31e0) = 0 [08048e34] time(NULL) = 1062082700 [08048ec5] isdigit(50, 3, 10, 0x01048447, 0x400d31e0) = 2048 [08048f0a] isdigit(50, 3, 10, 0x01048447, 0x400d31e0) = 2048 [08048c34] _ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(0x0804a348, 0x08048fc0, 0x40014020, 0xbffff774, 0xbffff718) = 0x0804a348 [08048c82] _ZNSolsEl(0x0804a348, 3, 0x40014020, 0xbffff774, 0xbffff718) = 0x0804a348 [08048c70] _ZNSolsEPFRSoS_E(0x0804a348, 0x080488e8, 0x40014020, 0xbffff774, 0xbffff718 [40094e0a] _ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(0x0804a348, 0x0804a348, 3, 0x08048421, 0x4002e201) = 0x0804a348 [08048c70] <... _ZNSolsEPFRSoS_E resumed> ) = 0x0804a348 [08048be0] time(NULL) = 1062082700 [08048c02] _ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(0x0804a348, 0x08048fc9, 0x40014020, 0xbffff774, 0xbffff718) = 0x0804a348 [08048c11] _ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RSbIS4_S5_T1_E(0x0804a3d8, 0xbffff6a4, 0x40014020, 0xbffff774, 0xbffff718) = 0x0804a3d8 [08048d40] _ZNSs12_M_leak_hardEv(0xbffff6a4, 1, 10, 0x01048447, 0x400d31e0) = 0x0804a51c [08048cf6] isdigit(113, 1, 10, 0x01048447, 0x400d31e0) = 0 [08048aaf] _ZNSs4_Rep10_M_destroyERKSaIcE(0x0804a510, 0xbffff6f0, 0xbffff6a0, 1, 0xbffff700) = 0x0804a500 [401312c1] _ZNSt8ios_base4InitD1Ev(0x0804a47c, 0, 172800, 0x40233234, 0x40014020) = 0x400bfd50 [ffffffff] +++ exited (status 0) +++