# Attr [![Flattr this][flatter_png]][flatter]
Display and set attributes on files and directories.
## Usage
Usage: attr [options] filespec [filespec]
Options:
````
-a | --archive + | - Set/reset archive bit
-r | --readonly + | - Set/reset read only bit
-h | --hidden + | - Set/reset hidden bit
-s | --system + | - Set/reset system bit
-n | --not-indexed + | - Set/reset content not indexed bit
-o | --offline + | - Set/reset offline bit
-t | --temporary + | - Set/reset temporary bit
-d | --directories Set/reset bits on directories
-y | --dry-run Change nothing, just report what would change
-i | --hide-attributes Do not show attributes
-e | --abort-on-error Abort if an error occurs
-R | --recursive Scan directories recursively
-q | --quiet Display less information
-v | --verbose Display more information
-V | --version Show version and copyright information and quit
-? | --help Show this help message and quit
````
Works on hidden and system files.
Doesn't abort on error (unless you use the -e option).
When displaying attributes, the following characters are used:
````
Character Meaning
--------- -------
- The attribute is not set, and will not be changed
_ The attribute was set, and will be reset (turned off)
a Archive attribute is set, and will not be changed
r Read-only attribute is set, and will not be changed
h Hidden attribute is set, and will not be changed
s System attribute is set, and will not be changed
n Not-indexed attribute is set, and will not be changed
o Offline attribute is set, and will not be changed
t Temporary attribute is set, and will not be changed
A Archive attribute is not set, and will be set
R Read-only attribute is not set, and will be set
H Hidden attribute is not set, and will be set
S System attribute is not set, and will be set
N Not-indexed attribute is not set, and will be set
O Offline attribute is not set, and will be set
T Temporary attribute is not set, and will be set
````
## Examples
````batch
C:\>rem turn off archive bit on files in c:\
C:\>attr -a-
C:\>rem turn off archive bit on files on drive c:
C:\>attr -a- -R
C:\>rem display what files have their archive bit set on drive c: (but don't change the bit):
C:\>attr -a- -R --dry-run *.*
C:\>rem display what files don't have their archive bit set on drive c: (but don't change the bit):
C:\>attr -a+ -R --dry-run *.*
````
## Verify a Release
To verify a release, download the .zip, .sha256, and .asc files for the release
(replacing attr-1.6-win32.zip with the release you are verifying):
````
$ wget https://github.com/rasa/attr/releases/download/v1.6/attr-1.6-win32.zip
$ wget https://github.com/rasa/attr/releases/download/v1.6/attr-1.6-win32.zip.sha256
$ wget https://github.com/rasa/attr/releases/download/v1.6/attr-1.6-win32.zip.asc
````
Next, check that sha256sum reports "OK":
````
$ sha256sum -c attr-1.6-win32.zip.sha256
attr-1.6-win32.zip: OK
````
Lastly, check that GPG reports "Good signature":
````
$ gpg --keyserver hkps.pool.sks-keyservers.net --recv-key 0x105a5225b6ab4b22
$ gpg --verify attr-1.5-win32.zip.asc attr-1.5-win32.zip
gpg: using RSA key 0xFF914F74B4BB6EF3
gpg: Good signature from "Ross Smith II