Unix Assignment

3. Is a C library function used to parse command-line options of the Unix/POSIX style. It is a part of the POSIX specification.
7. Used for file compression and decompression.
9. Used on Unix and Unix-like operating systems to change the owner of file system files, directories.
10. Used to add a loadable kernel module to the Linux kernel or to remove a loadable kernel module from the kernel.
11. Command can be used to track the files and directories which are consuming excessive amount of space on hard disk drive.
13. Is used to modify kernel parameters at runtime. The parameters available are those listed under /proc/sys/.
15. is a built-in command which is used to terminate processes manually.
16. It is used to either print a list of environment variables or run another utility in an altered environment without having to modify the currently existing environment.

1. Is a command on Unix and most Unix-like operating systems used to build and execute commands from standard input.
2. Displays user, group and privileges information for the user who is currently logged on to the local system. If used without parameters
4. Is a command in Unix and Unix-like operating systems to print the file name of the terminal connected to standard input.
5. This command attaches the filesystem of an external device to the filesystem of a system.
6. This command changes the apparent root directory for the current running process and its children.
8. Writes the full pathname of the current working directory to the standard output.
12. is a tool to convert line breaks in a text file from Unix format to DOS format and vice versa.
13. Command is used to create a dummy job. A dummy job helps in delaying the execution.
14. Used by a computer user to execute commands with the privileges of another user account.