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This article introduces the relevant knowledge of "how to get the directory name of the file in the Linux system". In the operation of the actual case, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Method 1: use "dirname" to get (extract) the directory name

The syntax is as follows:

The code is as follows:

[root@dabu.info] # dirname / File / path / path

Or

The code is as follows:

[root@dabu.info] # VAR= "$(dirname / text / piece / path / file name)"

Or

The code is as follows:

[root@dabu.info] # FOO= "/ path/to/my/folder/filename.avi"

[root@dabu.info] # OUT= "$(dirname ${FOO})"

An example is as follows: for example, the path to the dabu.txt file is / root/aaa/bbb/dabu.txt

. The method to get the directory name is as follows, enter:

The code is as follows:

[root@dabu.info] # dirname / root/aaa/bbb/dabu.txt

The output is:

The code is as follows:

/ root/aaa/bbb

The following example assigns the directory name of dabu.txt to the SRC variable and displays the value of the SRC variable through the echo command:

The code is as follows:

[root@dabu.info] # SRC= "$(dirname / root/aaa/bbb/dabu.txt)"

[root@dabu.info] # echo "Dirpath-$SRC"

The output is as follows:

The code is as follows:

Dirpath-/ root/aaa/bbb

Method 2: extract the directory name from the absolute path of the file using bash/ksh shell

The $character is used as a character extension and replacement. We can use it to manipulate and extend variables without using external commands, such as sed or awk. The usage mode of "parameter expansion, and command substitution" is as follows:

Suppose you assign the absolute path / root/aaa/bbb/dabu.txt of the dabu.txt file to the variable FILE, enter:

The code is as follows:

[root@dabu.info] # FILE= "/ root/aaa/bbb/dabu.txt"

[root@dabu.info] # echo "\ $FILE = $FILE"

Or replace echo "\ $FILE = $FILE" with echo $FILE. However, the previous sentence is suitable for use in scripts, because it is printed out for easy reading. Just test it yourself.

Then enter: echo ${FILE%/*}

Final output:

The code is as follows:

/ root/aaa/bbb

Of course, you can also output to a variable, as follows, the input is assigned to the VAL variable:

The code is as follows:

[root@dabu.info] # VAL= "${FILE%/*}"

[root@dabu.info] # echo "Dirpath-$VAL"

Output:

The code is as follows:

Dirpath-/ root/aaa/bbb

This is the end of the content of "how to get the directory name of the file in the Linux system". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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