How to switch directories efficiently in Linux

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The difference between -p and -v options is that the -v option will display the index of each record in the stack, and other than that, they are exactly the same. Suppose there is a directory stack now, let's take a look at what's in it:

[alvin@VM_0_16_centos dir2]$ pwd
/home/alvin/test/dir2
[alvin@VM_0_16_centos dir2]$ dirs -v
 0 ~/test/dir2
 1 ~/test/dir1
 2 ~/test/dir3
 3 ~/test

Please note that the topmost element is always the same as the current directory. If you view the directory stack in another directory, the first element will change accordingly. Similarly, if you use pushd and popd introduced later to operate the directory stack, the current directory will be switched to the address corresponding to the first element of the directory stack.

If we want to clear the directory stack, just use the -c option.

[alvin@VM_0_16_centos diff]$ dirs -c
[alvin@VM_0_16_centos diff]$ dirs -v
 0 ~/projects/blogdemos/diff

Pushing onto the directory stack: pushd

Each time the pushd command is executed, a dirs command is executed by default to display the contents of the directory stack. There are several main uses for pushd:

1. pushd + directory

If pushd is used directly with a directory, it will switch to that directory and put it on the top of the directory stack. example:

[alvin@VM_0_16_centos test]$ pushd dir1
~/test/dir1 ~/test
[alvin@VM_0_16_centos dir1]$ pushd ../dir2
~/test/dir2 ~/test/dir1 ~/test
[alvin@VM_0_16_centos dir2]$ pushd ../dir3
~/test/dir3 ~/test/dir2 ~/test/dir1 ~/test
[alvin@VM_0_16_centos dir3]$ dirs -v
 0 ~/test/dir3
 1 ~/test/dir2
 2 ~/test/dir1
 3 ~/test

2. pushd (without any parameters)

The effect of executing pushd without any parameters is to swap the two top directories on the directory stack. We have emphasized before that the first element of the directory stack is related to the current directory, so when the first element changes, the current directory will switch accordingly, and vice versa.

[alvin@VM_0_16_centos dir3]$ dirs -v
 0 ~/test/dir3
 1 ~/test/dir2
 2 ~/test/dir1
 3 ~/test
[alvin@VM_0_16_centos dir3]$ pwd
/home/alvin/test/dir3
[alvin@VM_0_16_centos dir3]$ pushd
~/test/dir2 ~/test/dir3 ~/test/dir1 ~/test
[alvin@VM_0_16_centos dir2]$ pwd
/home/alvin/test/dir2 #The corresponding directory changes [alvin@VM_0_16_centos dir2]$ dirs -v
 0 ~/test/dir2
 1 ~/test/dir3 #Swap the contents of index 0 and 1 2 ~/test/dir1
 3 ~/test

**3. pushd +/-n **

pushd +/-n means directly switching to the directory of the corresponding index value. Note that you can use either a plus sign or a minus sign. If it is a plus sign, it will count from the top of the directory stack to the bottom, and if it is a minus sign, it will count from the bottom of the directory stack to the top.

Next, we return to the question at the beginning of this article. What should we do if we need to frequently switch between two or more directories with long paths?

First, we use pushd + directory to add these paths to the directory stack;

Then, use pushd +/-n to quickly switch between different directories. The specific demonstration is as follows:

[alvin@VM_0_16_centos dir2]$ pwd
/home/alvin/test/dir2
[alvin@VM_0_16_centos dir2]$ dirs -v
 0 ~/test/dir2
 1 ~/test/dir3
 2 ~/test/dir1
 3 ~/test
[alvin@VM_0_16_centos dir2]$ pushd +2
~/test/dir1 ~/test ~/test/dir2 ~/test/dir3
[alvin@VM_0_16_centos dir1]$ pwd
/home/alvin/test/dir1
[alvin@VM_0_16_centos dir1]$ dirs -v
 0 ~/test/dir1
 1 ~/test
 2 ~/test/dir2
 3 ~/test/dir3

Pop the directory stack: popd

Each time the popd command is executed, a dirs command is executed by default to display the contents of the directory stack. The usage of popd is mainly as follows:

1. popd (without any parameters)

The effect of executing popd without any parameters is to pop the top element in the directory stack. At this time, the top element of the stack changes, and naturally the current directory will also switch accordingly.

[alvin@VM_0_16_centos dir3]$ dirs -v
 0 ~/test/dir3
 1 ~/test/dir1
 2 ~/test
 3 ~/test/dir2
[alvin@VM_0_16_centos dir3]$ popd
~/test/dir1 ~/test ~/test/dir2
[alvin@VM_0_16_centos dir1]$ dirs -v
 0 ~/test/dir1
 1 ~/test
 2 ~/test/dir2

2. popd +/-n

Delete the nth element in the directory stack. Similarly, the plus and minus signs indicate whether to count from top to bottom or from bottom to top.

[alvin@VM_0_16_centos dir1]$ dirs -v
 0 ~/test/dir1
 1 ~/test
 2 ~/test/dir2
[alvin@VM_0_16_centos dir1]$ popd +1
~/test/dir1 ~/test/dir2
[alvin@VM_0_16_centos dir1]$ dirs -v
 0 ~/test/dir1
 1 ~/test/dir2

This concludes this article on how to efficiently switch directories under Linux. For more information on efficient directory switching in Linux, please search for previous articles on 123WORDPRESS.COM or continue to browse the following related articles. I hope you will support 123WORDPRESS.COM in the future!