Programming in C

c[10] is initialized as all elements having a value of 0. - Make pointer p point to array a; - Use pointer p to update the value of a[4] to be 5.

Commands - Create a symbolic link called a.txt to file b.txt in a given directory. - Create a compressed tar archive for the contents of a given directory path. - Print all lines in a file or a set of files starting with string user. - Add execute permission to a given file. - Use ls command with some of its options to achieve specific listing.