This topic describes commands that can be used to manage objects.

Important osscmd is unavailable since July 31, 2019. Alibaba Cloud no longer updates or maintains osscmd. The osscmd operation commands are integrated into ossutil.

ls(list)

Command:

ls(list) oss://bucket/[prefix] [marker] [delimiter] [maxkeys]

List objects in a bucket. You can specify a prefix to list all objects whose names start with the specified prefix. For example, you can specify abc as the prefix to list all objects whose names start with abc.

Example:

  • python osscmd ls oss://mybucket/folder1/folder2
  • python osscmd ls oss://mybucket/folder1/folder2 marker1
  • python osscmd ls oss://mybucket/folder1/folder2 marker1 /
  • python osscmd ls oss://mybucket/
  • python osscmd list oss://mybucket/ "" "" 100

Command:

ls(list) oss://bucket/[prefix] --marker=xxx --delimiter=xxx --maxkeys=xxx
        --encoding_type=url

List objects in a bucket. You can set encoding_type to specify the encoding method that is used during transmission. If you set encoding_type to url, objects whose names contain control characters are encoded.

Example:

  • python osscmd ls oss://mybucket/folder1/folder2 --delimiter=/
  • python osscmd ls oss://mybucket/folder1/folder2 --marker=a
  • python osscmd ls oss://mybucket/folder1/folder2 --maxkeys=10

mkdir

Command:

mkdir oss://bucket/dirname

Create a folder.

Example:

python osscmd mkdir oss://mybucket/folder

listallobject

Command:

listallobject oss://bucket/[prefix]

List all objects in a bucket. You can specify a prefix to list objects whose names start with the prefix.

Example:

  • python osscmd listallobject oss://mybucket
  • python osscmd listallobject oss://mybucket/testfolder/

deleteallobject

Command:

deleteallobject oss://bucket/[prefix]

Delete all objects in a bucket. You can also specify a prefix to delete objects whose names start with the prefix.

Example:

  • python osscmd deleteallobject oss://mybucket
  • python osscmd deleteallobject oss://mybucket/testfolder/

downloadallobject

Command:

downloadallobject oss://bucket/[prefix] localdir --replace=false
      --thread_num=5

Download objects from a bucket to a local directory. This operation ensures that the original directory structure remains the same. You can specify a prefix to download objects whose names start with the specified prefix. --replace=false indicates that local files with the same name of the object will not be overwritten during the download. --replace=true indicates that local files with the same name of the object will be overwritten. You can also use thread_num to configure the download thread.

Example:

  • python osscmd downloadallobject oss://mybucket /tmp/folder
  • python osscmd downloadallobject oss://mybucket /tmp/folder
        –-replace=false
  • python osscmd downloadallobject oss://mybucket /tmp/folder –-replace=true
          --thread_num=5

downloadtodir

Command:

downloadtodir oss://bucket/[prefix] localdir --replace=false

Download objects from a bucket to a local directory. This operation ensures that the original directory structure remains the same. You can specify a prefix to download objects whose names start with the specified prefix. --replace=false indicates that local files with the same name of the object will not be overwritten during the download. --replace=true indicates that local files with the same name of the object will be overwritten. downloadtodir follows the same logic as that of downloadallobject.

Example:

  • python osscmd downloadtodir oss://mybucket /tmp/folder
  • python osscmd downloadtodir oss://mybucket /tmp/folder –-replace=false
  • python osscmd downloadtodir oss://mybucket /tmp/folder
      –-replace=true

uploadfromdir

Command:

uploadfromdir localdir oss://bucket/[prefix] --check_point=check_point_file --replace=false
        --check_md5=false --thread_num=5

Upload local files to a bucket.

If local directory /tmp/ contains the a/b, a/c, and a files, the paths of these files in OSS are oss://bucket/a/b, oss://bucket/a/c, and oss://bucket/a. If a prefix is set to mytest, the paths of these files in OSS are oss://bucket/mytest/a/b, oss://bucket/mytest/a/c, and oss://bucket/mytest/a.

--check_point=check_point_file is used to specify a checkpoint file. After the checkpoint file is specified, the osscmd tool will be used to store the timestamps that are recorded when the local files are uploaded. The uploadfromdir command is used to compare the timestamps of the files that are being uploaded and the timestamps that are recorded in the checkpoint file. If the timestamps are different, the files are reuploaded. check_point_file is not specified by default. --replace=false indicates that local files with the same name of the object will not be overwritten during the upload. --replace=true indicates that local files with the same name of the object will be overwritten. --check_md5=false indicates that Content-MD5 is not included in the request header and MD5 verification will not be performed. --check_md5=true indicates that MD5 verification will be performed.

Note: The checkpoint file stores upload records of all objects.

Example:

  • python osscmd uploadfromdir /mytemp/folder oss://mybucket
  • python osscmd uploadfromdir /mytemp/folder oss://mybucket
          --check_point_file=/tmp/mytemp_record.txt
  • python osscmd uploadfromdir C:\Documents and Settings\User\My Documents\Downloads
          oss://mybucket --check_point_file=C:\cp.txt

put

Command:

put localfile oss://bucket/object --content-type=[content_type]
        --headers="key1:value1#key2:value2" --check_md5=false

When uploading a local file to a bucket, you can set HTTP header fields such as content-type. --check_md5=false indicates that Content-MD5 is not included in the request header and MD5 verification will not be performed. --check_md5=true indicates that MD5 verification will be performed.

Example:

  • python osscmd put myfile.txt oss://mybucket
  • python osscmd put myfile.txt oss://mybucket/myobject.txt
  • python osscmd put myfile.txt oss://mybucket/test.txt --content-type=plain/text
          --headers=“x-oss-meta-des:test#x-oss-meta-location:CN”
  • python osscmd put myfile.txt oss://mybucket/test.txt
        --content-type=plain/text

upload

Command:

upload localfile oss://bucket/object --content-type=[content_type]
      --check_md5=false

Upload local files to a bucket. --check_md5=false indicates that Content-MD5 is not included in the request header and MD5 verification will not be performed. --check_md5=true indicates that MD5 verification will be performed.

Example:

python osscmd upload myfile.txt oss://mybucket/test.txt
        --content-type=plain/text

get

Command:

get oss://bucket/object localfile

Download an object to a local file.

Example:

python osscmd get oss://mybucket/myobject /tmp/localfile

multiget(multi_get)

Command:

multiget(multi_get) oss://bucket/object localfile --thread_num=5

Use multithreading to download an object to a local file. You can configure the number of threads that are used to download the object.

Example:

  • python osscmd multiget oss://mybucket/myobject /tmp/localfile
  • python osscmd multi_get oss://mybucket/myobject /tmp/localfile

cat

Command:

cat oss://bucket/object

Read and display object content. Do not run this command if the object is large.

Example:

python osscmd cat oss://mybucket/myobject

meta

Command:

meta oss://bucket/object

Read and display the meta information of the object. Meta information contains the content-type, file length, and user metadata.

Example:

python osscmd meta oss://mybucket/myobject

copy

Command:

copy oss://source_bucket/source_object oss://target_bucket/target_object
        --headers="key1:value1#key2:value2"

Replicate an object from a source bucket to a destination bucket.

Example:

python osscmd copy oss://bucket1/object1 oss://bucket2/object2

rm(delete,del)

Command:

rm(delete,del) oss://bucket/object --encoding_type=url

Delete an object. When encoding-type is set to url, control characters to be deleted also need to be URL-encoded.

Example:

  • python osscmd rm oss://mybucket/myobject
  • python osscmd delete oss://mybucket/myobject
  • python osscmd del oss://mybucket/myobject
  • python osscmd del oss://mybucket/my%01object --encoding_type=url

signurl(sign)

Command:

signurl(sign) oss://bucket/object --timeout=[timeout_seconds]

Generate a signed URL containing the timeout value. A signed URL is used to provide access to a specific object when the bucket ACL is private.

Example:

  • python osscmd sign oss://mybucket/myobject
  • python osscmd signurl oss://mybucket/myobject