Description #

In this task, you will write a program that helps you scan a directory by scanning the files in it. Your program should receive a list of directories as its arguments and those directories will be scanned. As a result we want to get the list of all the files with its size which are in scanned directories.

Flag -p is used to provide each directory path. Flag -d means depth of scanning as the scanning process is limited to some depth of subdirectory search. Depth equal to 1 will only scan the current directory, depth equal 2 will scan the current directory and its immediate children and so on. During the scanning you should skip symlinks. Flag -e is optional and when provided, the program should skip during scanning all the files with the extension other than given with this flag. If the -o option is provided and the environment variable L1_OUTPUTFILE exists and is not empty, your program should output the information about scanned files to the file named in this environment variable; otherwise, your program should output this information to the standard output. If the file already exists it should be overwritten.

Example: #

$ ./prog -p ./dir1 -p ./dir2 -d 2 -e txt -o
path: ./dir1
file1.txt 15
file2.txt 3315
path: ./dir2
file3.txt 23
path: ./dir2/dir3
file4.txt 44
file5.txt 12342

Stages #

• The program lists the names of the files of each provided directory on stdout, not skipping anything yet and ignoring other arguments. Run with -d 1 flag
• Program lists files with their sizes and option -e works
• Option -d works
• Option -o works