$1\mathrm{.}1.$ Write a program which displays the parent's process Id and its process Id$.$

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$1\mathrm{.}2.$ Create a child process by using fork$()$ system call in which the parent displays a message that it has created a child process and also displays its child$$s process id$.$

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$1\mathrm{.}3.$ Child should display a message that I will execute cat command after $4$ seconds and go to sleep$()$ for $4$sec$,$ Next it should display message that $$I am executing cat command$$

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$1\mathrm{.}4.$ Use execl$()$ system call to execute cat commands.

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$1\mathrm{.}5.$ Finally, control should return to parent and Parent should display $$My Child is dead$$

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