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https://issues.apache.org/jira/browse/HDFS-5062?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe resolved HDFS-5062.
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Resolution: Duplicate
> org.apache.hadoop.fs.Df should not use bash -c
> ----------------------------------------------
>
> Key: HDFS-5062
> URL: https://issues.apache.org/jira/browse/HDFS-5062
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Colin Patrick McCabe
> Priority: Minor
>
> {{org.apache.hadoop.fs.Df}} shouldn't use {{bash -c}}. The only reason why
> it is using it right now is to combine stderr and stdout, something that can
> be done easily from Java.
> {{bash}} may not be present on all systems, so having it as a dependency is
> undesirable. There are also potential problems in cases where paths contain
> shell metacharacters. Finally, having this code here encourages people to
> copy this use of bash, potentially introducing more shell injection flaws.
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