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https://issues.apache.org/jira/browse/HADOOP-12641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15059316#comment-15059316
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Lin Yiqun commented on HADOOP-12641:
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[~aw], there are these params in Ls command now.
{code}
public static final String DESCRIPTION =
"List the contents that match the specified file pattern. If " +
"path is not specified, the contents of /user/<currentUser> " +
"will be listed. For a directory a list of its direct children " +
"is returned (unless -" + OPTION_DIRECTORY +
" option is specified).\n\n" +
"Directory entries are of the form:\n" +
"\tpermissions - userId groupId sizeOfDirectory(in bytes)
modificationDate(yyyy-MM-dd HH:mm) directoryName\n\n" +
"and file entries are of the form:\n" +
"\tpermissions numberOfReplicas userId groupId sizeOfFile(in bytes)
modificationDate(yyyy-MM-dd HH:mm) fileName\n\n" +
" -" + OPTION_PATHONLY +
" Display the paths of files and directories only.\n" +
" -" + OPTION_DIRECTORY +
" Directories are listed as plain files.\n" +
" -" + OPTION_HUMAN +
" Formats the sizes of files in a human-readable fashion\n" +
" rather than a number of bytes.\n" +
" -" + OPTION_RECURSIVE +
" Recursively list the contents of directories.\n" +
" -" + OPTION_MTIME +
" Sort files by modification time (most recent first).\n" +
" -" + OPTION_SIZE +
" Sort files by size.\n" +
" -" + OPTION_REVERSE +
" Reverse the order of the sort.\n" +
" -" + OPTION_ATIME +
" Use time of last access instead of modification for\n" +
" display and sorting.";
{code}
And I didn't see some param that is to limit displaying.
> FsShell command LS can add the display-limited param
> ----------------------------------------------------
>
> Key: HADOOP-12641
> URL: https://issues.apache.org/jira/browse/HADOOP-12641
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs, tools
> Affects Versions: 2.7.1
> Reporter: Lin Yiqun
> Assignee: Lin Yiqun
> Attachments: HADOOP-12641.001.patch
>
>
> In some time, using Ls command is not convenient. For example, when I just
> want to see the child files infos in a directory and I don't need to look the
> all child files records of this directory, this command will show all of
> them. It's will be more terrible if the directory has thousands of child
> files.So may be we need a param that can limit the displaying file record on
> Ls command.
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