Raghu, please ensure that these commands produce the same kinds of
warnings/errors as there Linux counterparts for non-existent and non-
modifiable path inputs.
On Dec 11, 2007, at 2:17 PM, Raghu Angadi (JIRA) wrote:
[ https://issues.apache.org/jira/browse/HADOOP-2336?
page=com.atlassian.jira.plugin.system.issuetabpanels:comment-
tabpanel#action_12550731 ]
Raghu Angadi commented on HADOOP-2336:
--------------------------------------
Proposed help for these commands (pretty much serves as
specification) :
*chmod* {noformat}
$ bin/hadoop fs -help chmod
-chmod [-R] <MODE[,MODE]... | OCTALMODE> PATH...
Changes permissions of a file.
This works similar to shell's chmod with a few
exceptions.
-R modifies the files recursively. This is the only
option
currently supported.
MODE Mode is same as mode used for chmod shell command.
Only letters recognized are 'rwx'. E.g.: a+r,g-w,
+rwx,o=r
OCTALMODE Mode specifed in 3 digits. Unlike shell command,
this requires all three digits.
E.g.: 754 is same as u=rwx,g=rw,o=r
{noformat}
*chown* {noformat}
$ bin/hadoop fs -help chown
-chown [-R] [OWNER][:[GROUP]] PATH...
Changes owner and group of a file.
This is similar to shell's chown with a few
exceptions.
-R modifies the files recursively. This is the only
option
currently supported.
If only owner or group is specified then only owner or
group is modified. The owner and group names can only
contain digits and alphabet. These names are case
sensitive.
{noformat}
*chgrp* {noformat}
bin/hadoop fs -help chgrp
-chown [-R] GROUP PATH...
This is equivalent to -chown ... :GROUP ...
{noformat}
Shell commands to access and modify file permissions
----------------------------------------------------
Key: HADOOP-2336
URL: https://issues.apache.org/jira/browse/
HADOOP-2336
Project: Hadoop
Issue Type: New Feature
Components: fs
Reporter: Raghu Angadi
Assignee: Raghu Angadi
Fix For: 0.16.0
Hadoop 0.16 includes file permissions in DFS and we need FsShell
to support common file permissions related commands :
- chown
- chgrp
- chmod
Also output from some of the commands like {{ls -l}} will change
to reflect new file properties. Aim is to make the above commands
look like its Unix/Linux couterparts. They will of course support
only the subset of the options.
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