Create a file touch
touch [filename]
cat displays the contents of the file
cat【】
-n line number
例 cat -n /etc/services
tac display file contents
tac file is displayed in reverse order
tac [file name]
more paging file contents
more [filename]
usage:
Blank page or f
Enter Wrap
q or Q to exit
例：more /etc/services
less page display file contents
less [filename]
例less /etc/services
/ Plus Keywords
n represents paging
The first few lines of the file display head
-n Specifies the number of lines
head -n 20 /etc/services
By default the first ten lines
Tail end of a few lines display file
-n Specifies the number of lines
-f dynamic display file contents end
tail -20 /etc/services
ln connection file generation
ln -s source file [file] [target]
-s Create a soft link
ln -s /etc/issue /tmp/issue.soft
Create a soft link files issue of
ln /etc/issue /tmp/issue.soft
The issue of creating a file hard-wired
Characteristics: Similar to the shortcut window