Error added: 2014-05-27T10:12:50Z
Your grep PATTERN starts with a hyphen. For instance: $ ps -ef | grep "-DAPPNAME=" grep: unknown devices method You'll need to escape with an backslash. The corrected sample above: ps -ef | grep "\-DAPPNAME="
You have a file in the current directory that starts with a hyphen. ls -- -* rm -fv -- -*
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