Question

1. Give the command (single command or pipelined series of commands) that performs each of the following tasks.  Assume bash, and the commands we have been discussing.  Do not use things like perl, awk, python, etc.  Unless specifically stated otherwise, assume that the command should work no matter what your current working directory is or where a user's home directory is located. Use only flags that are required by the question as stated. Assume you are logged in as a "normal" (non-administrator) user, but that you have "administrative" permissions set up in the sudoers file in case you would be required to take advantage of that in order to carry out any of these tasks. Use only single spaces between parts of a command/options/arguments, and do not put extra spaces before or after the answers.

e) Copies user turk’s NetworkingClass directory, all its files, all its subdirectories, and all files in all its subdirectories, preserving all file permissions, to the ~/MyNetworkingClass directory. Assume permissions are set on turk's NetworkingClass directory to allow you to do this

f) Sets it so that, of permissions that would normally be given for files and/or directories that are created in the future, all permissions will be denied to “other”, write and execute permissions will be denied to “group”, and no permissions will be denied to the “user” (owner).

g) Using “absolute” (numeric) notation, changes the permissions on all the existing files in the ~/NetworkingClass/scripts directory so that the “user” (owner) has all permissions, all users in the same group have read and execute permissions, and all other users have only read permissions.

h) Renames the file "hello.c" which is in the current working directory to be called "hello.cpp".

Answer 1

e) Copies user turk’s NetworkingClass directory, all its files, all its subdirectories, and all files in all its subdirectories, preserving all file permissions, to the ~/MyNetworkingClass directory. Assume permissions are set on turk's NetworkingClass directory to allow you to do this

cp -ar /home/turk/NetworkingClass ~/MyNetworkingClass

f) Sets it so that, of permissions that would normally be given for files and/or directories that are created in the future, all permissions will be denied to “other”, write and execute permissions will be denied to “group”, and no permissions will be denied to the “user” (owner).

vi ~/.bashrc
Append/modify following line to setup a new umask:

umask u=rwx,g=r,o=

or

type above line in terminal until that terminal session is not terminated , once terminal is closed it will revert to the original permission but if you want to keep it permanent then have to write in ~/.bashrc file .

g) Using “absolute” (numeric) notation, changes the permissions on all the existing files in the ~/NetworkingClass/scripts directory so that the “user” (owner) has all permissions, all users in the same group have read and execute permissions, and all other users have only read permissions.

chmod 754 /home/turk/NetworkingClass/scripts

h) Renames the file "hello.c" which is in the current working directory to be called "hello.cpp".

mv hello.c hello.cpp

Thanks