What is “chmod” command?

622

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Which command is used to find whether the system is 32 bit or 64 bit?

693

---

Which unix command lists files/folders in alphabetical order?

665

---

Name the various commands that are used for the user information in unix.

612

---

Can you explain a little bit about command substitution?

680

---

Describe the zip/unzip command using gzip.

678

---

Explain the terms ‘system calls’ and ‘library functions’ with respect to unix commands?

729

---

Explain ‘library functions’ with respect to unix commands?

669

---

What is the command to find hidden files in the current directory?

659

---

What is the unix command to confirm a remote host is alive or not?

642

---

What do chmod, chown, chgrp commands do?

706

---

What is the command to find maximum memory taking process on the server?

750

---

Explain mount and unmount command.

684

---

What is the fork() system call?

593

---

What are the possible return values of kill() system call?

539

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