rmd
An improved rm implementation able to remove duplicate files
Description
rmd is an rm reimplementation made in pure Rust. It is able to remove files and directories as usual but it also able to remove duplicate file in given directories recursively.
Duplicate file are found by comparing SHA256 hashes. When a file has an hash that has already been found it is removed immediately.
Installation
This tool can be easly installed from sources:
Usage
It works in an almost compatible way with the standard rm. To get a full help run:
But the most common scenarios includes:
- remove files, for example:
- remove a directory, for example:
Additional Features
Remove Duplicates
- remove duplicates files in the current directory, and all sub directoris:
or remove duplicates files in a specified directory:
Remove by Last Access
This functionality allows to remove file older or newer then a given time-specification.
Remove File older then time-spec
Remove File newer then time-spec
rmd checks if the last access is before (so the file is older) or after (so the file is newer) then the time described by the time-specification. time-specification describes a relative amount of time (in seconds) in the past from the moment when the program is run.
time-specification format
[N+T]+
Where:
- N is a number (1-9)
- T is a time descriptor
- + means one or more
Time Descriptor Table
| Short Format | Long Format | Meaning | Value |
|---|---|---|---|
| s | second | second | 1 second |
| m | minute | minute | 60 seconds |
| h | hour | hour | 60 minutes |
| d | day | day | 24 hours |
| w | week | week | 7 days |
| M | month | month | 30 days |
| y | year | year | 365 days |
Examples
will remove in the current directory, and recursivelly in all sub directories, file with a last access time equal or before 2 year, 4 month and 5 days in the past from the time when the program is run.
will remove in the current directory, and recursivelly in all sub directories, file with a last access time equal or after 4 hour and 30 minutes in the past from the time when the program is run.
will remove in /home/user/temp-store and recursivelly in all sub directories, file with a last access time equal or before 1 mounth and 15 days in the past from the time when the program is run.
will remove in /home/user/wrong-downloads and recursivelly in all sub directories, file with a last access time equal or after 30 seconds in the past from the time when the program is run.
Remove by Size
This functionality allows to remove file smaller or larger then a given size-specification.
Remove File smaller then size-spec
Remove File larger then size-spec
rmd checks if the file size, in bytes. If larger mode is used rmd checks, for each file in the specified directory, and recursivelly in all sub directories, if the size is larger or equal to the size decribed in size-spec and if so rmd remove the file. Of course if smaller mode is used rmd checks for file smaller or equal to the size in size-spec.
size-specification format
[N+S]+
Where:
- N is a number (1-9)
- T is a size descriptor
- + means one or more
Deciamal Size Descriptor Table
| Short Format | Long Format | Meaning | Value |
|---|---|---|---|
| b | byte | 1 byte | |
| kb | kilo | kilobyte | 1000 byte |
| mb | mega | megabyte | 1000 kilobyte |
| gb | giga | gigabyte | 1000 megabyte |
| tb | tera | terabyte | 1000 gigabyte |
| pb | peta | petabyte | 1000 terabyte |
Binary Size Descriptor Table
| Short Format | Long Format | Meaning | Value |
|---|---|---|---|
| b | byte | 1 byte | |
| kib | kibi | kibibyte | 1024 byte |
| mib | mebi | mebibyte | 1024 kibibyte |
| gib | gibi | gibibyte | 1024 mebibyte |
| tib | tebi | tebibyte | 1024 gibibyte |
| pib | pebi | pebibyte | 1024 tebibyte |
Decimal and Binary size descriptor can be use together
Examples
will remove in the current directory, and recursivelly in all sub directories, file with a size smaller or equal to 56 Mebibytes and 2 Kilobytes.
will remove in the current directory, and recursivelly in all sub directories, file with a size larger or equal to 4 Gibabytes and 30 Megabytes.
will remove in /home/user/temp-store and recursivelly in all sub directories, file with a size larger or equal to 1 Mebibytes and 15 Kibibytes.
will remove in /home/user/useless-files and recursivelly in all sub directories, file with a size smaller or equal to 30 Kilobytes.
Note
- When working in interactive mode and a remove file is a directory rmd prompts only once for the root directory
- newer, older, recursive, smaller, larger are mutually exclusive.
- Specification String, in both time and size remove, can contain any number of non alphanumeric characters between a number and a descriptor or between a descriptor and a number, those characters are simply treated as separators. The important thing are to NOT put sperators into numbers or into descriptors and to properly quote the specification string so it will be treated as a unique argument.