screen

1. To start a new session in attached mode with session name
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screen -U -S qasim

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screen -D qasim
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2. List current screen session
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screen -ls

3. Connection with screen session
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Eg. I want connect with session no 1
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screen -r 1

4. Detach with screen session
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press ctrl+a   release both hands and then press ---> d


5. Kill screen sessions
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screen -S [session # you want to kill] -X  quit


6. To join a screen that is already attached  ---> Connect to specific session in "watching/spy mode"
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screen -x screenid

screen -x qasim

7. Screen run a bash command, which in turn runs your script.
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screen -d -m bash -c 'ping google.com'

8. Screen run a bash Interative shell, which in turn runs your script.
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screen -dm -U -S taha bash -c '/root/asim.sh'

screen -dm -U -S google bash -c 'echo taha;echo hadi;/root/asim.sh;ping google.com'