ossutil - Getting Started| Alibaba Cloud Documentation Center

This topic describes how to use ossutil to create a bucket, upload a local file to the bucket, download an object to the local computer, and generate a signed URL to share an object with third parties for downloads or previews.

Prerequisites

ossutil is installed. For more information, see Download and installation.

Usage notes

Each sample command line in this topic is based on the 64-bit Linux system. For other systems, replace ./ossutil64 of the command with the corresponding binary name. For example, for the 64-bit Windows system, replace ./ossutil64 with ossutil64.exe. The following table lists the binary names corresponding to each system.


System	Binary name
64-bit Linux	./ossutil64
32-bit Linux	./ossutil32
64-bit Windows	ossutil64.exe
32-bit Windows	ossutil32.exe
64-bit macOS	./ossutilmac64
32-bit macOS	./ossutilmac32
64-bit ARM	./ossutilarm64
32-bit ARM	./ossutilarm32

Create a bucket

Command syntax
```
./ossutil64 mb oss://bucket
```
Examples
You can run the following command to create a bucket named examplebucket:
```
./ossutil64 mb oss://examplebucket
```
If a similar result is displayed, the bucket named examplebucket is created.
```
0.668238(s) elapsed
```

For more information about how to create buckets, see mb (create buckets).

Upload objects

Command syntax
```
./ossutil64 cp local_file oss://bucket
```
Examples
- You can run the following command to upload an object named examplefile.txt to examplebucket:
```
./ossutil64 cp examplefile.txt oss://examplebucket
```
- You can upload an object named examplefile.txt to examplebucket and rename the object exampleobject.txt.
```
./ossutil64 cp examplefile.txt oss://examplebucket/exampleobject.txt
```
If a similar result is displayed, the object is uploaded to the bucket.
```
0.720812(s) elapsed
```

For more information about how to upload objects, see Upload objects.

Download objects

Command syntax
```
./ossutil64 cp cloud_url local_file
```
Examples
You can run the following command to download an object named examplefile.txt from examplebucket to a local directory named localfolder:
```
./ossutil64 cp oss://examplebucket/examplefile.txt localfolder/
```
You can run the following command to download an object named examplefile.txt from examplebucket to a local directory named localfolder and rename the object exampleobject.txt:
```
./ossutil64 cp oss://examplebucket/examplefile.txt localfolder/exampleobject.txt
```
If a similar result is displayed, the object is downloaded to the specified local directory.
```
0.720812(s) elapsed
```

For more information about how to download objects, see Download objects.

Generate a signed URL for an object

Command syntax

./ossutil64 sign cloud_url [--timeout <value>]

Examples

You can run the following command to generate a signed URL for the object oss://examplebucket/exampleobject.txt and set the validity period of the URL to 3,600 seconds:

./ossutil64 sign oss://examplebucket/exampleobject.txt --timeout 3600

If the following results are displayed, the signed URL is generated.

https://examplebucket.ss-cn-hangzhou.aliyuncs.com/exampleobject.txt?Expires=1608282224&OSSAccessKeyId=LTAI4G33piUmgRN1DXx9****&Signature=jo4%2FGykfuc1A4fvyvKRpRyymYH****
0.368676(s) elapsed

For more information about how to generate signed URLs, see sign (generate signed object URLs).