3 ways to delete specific files in a directory using bash shell _linux Shell

Source: Internet
Author: User

I am a new Linux user. Now I need to clean up a download directory of files, in fact, I just want to delete from the ~/download/folder in addition to the following format files so other files:

1.*.iso-All documents in ISO format.
2.*.zip-All files in zip format.

How do I delete a particular file in a bash shell based on a linux,os X or unix-like system?

The Bash shell supports rich file pattern matching characters such as:

1.*-matches all the files.
2.? -Matches a single letter in the filename.
3.[...]-matches any one of the letters in the enclosing parentheses.

Strategy #1: See the extended pattern-matching character

Here you need to use the system's built-in SHOPT command to open the EXTGLOB option in the shell, and then you can use the extended mode character, which matches the following:

1.? (Pattern list)-matches a given pattern 0 or more times.
2.* (Pattern list)-matches a given pattern 0 or more times.
3.+ (schema list)-matches a given pattern at least once.
4.@ (schema list)-matches the given pattern once.
5.! (schema list)-does not match the given pattern.

A list of patterns is one or more uses | A separate pattern (filename).

First, you open the EXTGOLB option:

Copy Code code as follows:
Shopt-s Extglob

Delete all files except the. zip and. iso files in bash
The syntax format for the RM command is:

Copy Code code as follows:

# # Keep only file1 files # #
Rm! (File1)

# # Keep only file1 and file2 files # #
Rm! (File1|file2)

# # Keep Zip files only # #
Rm! (*.zip)

# # Keep zip and ISO files only # #
Rm! (*.zip|*.iso)

# # You can also use the full directory # #
rm/users/vivek/! (*.zip|*.iso|*.mp3)

# # can also pass parameters # #
RM [Options]! (*.zip|*.iso)
Rm-v! (*.zip|*.iso)
Rm-f! (*.zip|*.iso)
RM-V-I! (*.php)

Policy #2: Use bash's globignore variable to delete all files except the specified file

Excerpt from bash (1) man page:

Copy Code code as follows:

This is a list of patterns separated by colons that define the collection of files to ignore by path expansion. If a file matching to the path expansion pattern also matches the pattern in Globignore, it is removed from the matching list.

To delete all files only the zip and ISO files are retained, set Globignore as follows:

Copy Code code as follows:

# # only works in BASH #
CD ~/downloads/
RM-V *
Unset Globignore

Policy #3: Delete all other files with find command only zip and ISO files

If you are using a tcsh/csh/sh/ksh or other shell, you can try to delete the file on the Unix-like system using the syntax format of the Find command below:

Copy Code code as follows:

find/dir/-type f-not-name ' matching mode '-delete

Copy Code code as follows:

# # for weird filenames can use Xargs # #
find/dir/-type f-not-name ' matching mode '-print0 | Xargs-0-I {} RM {}
find/dir/-type f-not-name ' matching mode '-print0 | Xargs-0-I {} RM [options] {}

To delete files in the ~/source directory other than PHP, type:

Copy Code code as follows:

Find ~/sources/-type f-not-name ' *.php '-delete

Copy Code code as follows:

Find ~/sources/-type f-not-name ' *.php '-print0 | Xargs-0-I {} rm-v {}

The syntax for retaining only the *.zip and *.iso files is as follows:
Copy Code code as follows:

Find. -type f-not \ (-name ' *zip '-or-name ' *iso ')-delete

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.