What is the use of strace command?

[bountysite]

As above already mentions what strace is, here is how you may use strace.

You have a process running and you are not sure why the process seems to be stuck for a long time. To investigate what is going, you would run below:-
strace -p <_process_pid> -f -t

-f would trace child processed spawned
-t would print timestamp

[tuxandrew]

Hello,



What is the use of strace command?



Thanks

Strace command is used to captures and records all system calls made by a process and the signals received by the process. In case a program crashes or behaves in a way not expected, you can go through its systems calls to get a clue of what exactly happened during its execution. Strace is more advanced way of troubelshooting.

Simply run a command with strace in shell, for tracing of all system calls made by the df command.

root@localhost:~#strace df -h # This command will generate the system call made by the process during its execution.

[Wellbet]

I am not so sure about this but I think it is a command line tool for debugging specific fo Unix OS.

[kylojoe]

Strace is a better tool for the Linux system. It keeps capturing an underlying system calls and their activity. If a program in your system gets damaged or is not working properly, then you can go to the system call to find out the reason and you can see it there.