Interview Questions on Linux Filesystems with Answers

2. What is the difference between ext3 and ext4 filesystem?
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3. What is the command used to check any hardware changes made on the system in Linux?
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4. Is it possible to increase swap partition? If yes then how?
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5. What is a swap partition ? What is the recommended swap partition for 8 GB RAM?
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6. What is the procedure you follow to extend a LVM partition?
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7. What is the command to view all the available partitions on the system?
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8. What is the command to view all the mounted partitions on the system?
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9. What is the use of mtab directory?
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10. How do you make permanent changes to any file inside /proc directory?
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11. What is the default mode when you enter single user mode?
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12. Explain the procedure to fix a case when a system is unable to boot due to improper entry in fstab
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13. What does the last two sections define in fstab file?
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14. What is the command to display all the logical volume available in the system?
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15. How do you mount a windows share on Linux? Is it possible?
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16. What is the difference between NFS share and a Samba share?
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17. What is the default permission applied on the user when you mount a NFS permission on any local directory in your system?
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18. What is the command to view all the kernel parameters?
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19. What is . and .. in very directory of Linux system?
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20. What is the command to view all the variables in your system?
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21. How can you make a custom environment variable permanent so that it works even after reboot?
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