1. Where is that value controlled? 2. What value does spawn return? 3. What is

1. Where is that value controlled?
2. What value does spawn return?
3. What is DNS?
4. How do you take a single line of input from the user in a
shell script?
5. How do you create a swapfile?
6. what do you mean by server

Question Posted / venu

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1. Where is that value controlled? 2. What value does spawn return? 3. What is DNS? 4. How do you..

Answer / vinod

dns defines domain naming system

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1. Where is that value controlled? 2. What value does spawn return? 3. What is DNS? 4. How do you..

Answer / imnoor

To add a swap file:

Determine the size of the new swap file in megabytes and multiply by 1024 to determine the number of blocks. For example, the block size of a 64 MB swap file is 65536.

At a shell prompt as root, type the following command with count being equal to the desired block size:
dd if=/dev/zero of=/swapfile bs=1024 count=65536
Setup the swap file with the command:
mkswap /swapfile
To enable the swap file immediately but not automatically at boot time:
swapon /swapfile
To enable it at boot time, edit /etc/fstab to include the following entry:
/swapfile swap swap defaults 0 0
The next time the system boots, it enables the new swap file.

After adding the new swap file and enabling it, verify it is enabled by viewing the output of the command cat /proc/swaps or free.

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