working with files

Slide 5 of 91

Notes:

Naming a file

- can contain up to 256 characters, except when the file is under an MPE group

or account, then 16 characters is the limit

- can be any combination of:

- alphanumeric character

- special character + - _ .

- case matters - file1, FILE1, File1, fILE1 are different files

Creating and listing files

> cat >file1 Enter/Return to end each line, CTRL-Y to finish

> vi file1

> ls Files starting with . (dot) are hidden and not normally listed, use ls -a

Viewing and printing a file:

> more file1

> cat file1

> lp file1

Copying, renaming, and removing files

> cp file1 file2 If file2 exists, it is overwritten.

> mv file1 file2 If file2 exists, it is overwritten.

> rm file2

Displaying and Changing a File’s Permissions and Ownership

Display a file’s permissions:

> ll

-rw-r--r-- 1 CGI.APACHE APACHE 57 Feb 2 19:26 file1

-rw-r--r-- 1 CGI.APACHE APACHE 57 Feb 2 19:26 file2

Change a file’s permissions:

> chmod u+x file1

Change a file’s ownership:

> chown MGR.APACHE file1