I am running a automatic incremental backup in network, at that time if thunderbird is running on client computer then backup is not completed that's why i need to know if there is any command to block a process for certain time for example thunderbird etc.
You can send the SIGSTOP signal to any process and that process will stop execution, this signal can't be ignored by the process. To send the signal by PID of the process run:
To send the signal to every process running a specified command, e.g. thunderbird, use this :
To allow the process to continue execution just send the process the SIGCONT signal:
Adding to falconer's answer, you can have a command-line way and a graphical way to achieve what you want to achieve:
Open a terminal(Ctrl+Alt+t) and type:
To continue execution of the process: