Delete the test directory: # rm -Rf test/ Because this example uses the –f option, there is no confirmation and th…

# cp /var/log/messages . the dot (.) represents the current location.

Check the file type of test1: # file test1 test1: empty Step 2. Check the type of the password file on the system…

# mkdir –p another/quick/test

Change the owner of file1 from user01 to user02: # chown user02 file1 Change the group of file2 from user01…

Operation     Digit        Mnemonic            Description Read               r                 4                 …

Unravel the mystery of sed and awk http://www.techrepublic.com/article/unravel-the-mystery-of-sed-and-awk/1050917�…

HowTo: Use grep Command In Linux / UNIX [ Examples ] http://www.cyberciti.biz/faq/howto-use-grep-command-in-linux-…

Redhat Study notes: To identify the architecture of a system, run the following command: # uname -p -----…