Linux file Management class command detailed

File command and its usage

File: View the type of content

Du command and its usage

-S:

-H:

Read command and its usage

Describe the general linkages and differences between Gpl,bsd,apache three open source agreements

Free software

Open source Agreement, copyright description

List Linux distributions and describe their relationship to the Linux kernel

Linux,gnu:gnu/linux,

Release: Fedora,redhat (Centos,mandrake,), Suse,debian (Ubuntu,mint), Gentoo,lfs (Linux from Scratch)

Compile: The source code is converted into a binary format program that can be executed on the corresponding platform, which is closely related to hardware

RedHat: Universal format

To view text:

Cat, TAC, more, less, head, tail

Cat: Connect and print

Cat/etc/issue

Cat/etc/fstab

Cat/etc/issue/etc/fstab

-N: Display line number, Cat-n/etc/issue

-E: Display line terminator, $

Text files per line terminator: $

-T: Show tab, tab

-a:all

Tac/etc/issue: The tail line is displayed to the first row, the header line is displayed to the last row

Ctrl +c:interrupt, interrupt

Split screen Display

More, less

MORE: Turn backwards

More/etc/rc.d/rc.sysinit

Space: Flip Backwards

B: Flip Forward

Less

B: Flip Forward

Head: View the top n rows of a file

Head/etc/inittab-n 2 shows the first 2 rows

Tail: Viewing the following n rows of a file

Tail/etc/inittab-n 5 shows the following 5 rows

Default n=10 line,

-N: Specify n rows

-f:follow, look at the end of the file, do not exit, wait to display the subsequent append to this file new content;

Text Processing:

Cut, join, SED, awk

　　

Detailed instructions for the Linux file management class