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https://issues.apache.org/jira/browse/KARAF-754?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christian Schneider resolved KARAF-754.
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Resolution: Fixed
> shell:cat hyphen ("-") option not activating STDIN.
> ---------------------------------------------------
>
> Key: KARAF-754
> URL: https://issues.apache.org/jira/browse/KARAF-754
> Project: Karaf
> Issue Type: Bug
> Components: karaf-shell
> Affects Versions: 2.2.2
> Reporter: Glen Mazza
> Assignee: Christian Schneider
> Priority: Minor
> Fix For: 3.0.0
>
>
> According to the help for shell:cat, the - is supposed to activate cat for
> STDIN (just as the Linux cat command does). However, the hyphen is being
> used as an argument parsing flag and hence isn't working:
> karaf@root> cat --help
> DESCRIPTION
> shell:cat
> Displays the content of a file or URL.
> SYNTAX
> shell:cat [options] paths or urls
> ARGUMENTS
> paths or urls
> A list of file paths or urls to display separated by
> whitespaces
> (use - for STDIN)
> OPTIONS
> --help Display this help message
> -n The number the output lines, starting at 1.
> karaf@root> shell:cat -
> Error executing command shell:cat undefined option -
> It may be sufficient to remove the STDIN option from the cat command, I'm not
> sure how useful STDIN is within an OSGi command-line prompt anyway.
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