linux - How do I use tr to substitute '--' string -

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मेरे पास एक आउटपुट है: 

  - out1 - out2 - out3   
 मैं आउटपुट प्राप्त करना चाहता हूं:  
  out1 out2 out3  
 
 मैंने उपयोग करने के बारे में सोचा: 
 < पूर्व>  tr '-' ''

लेकिन यह '-' को पहचानने के लिए पहली स्ट्रिंग होना चाहिए जिसे मैं स्थानांतरित करना चाहता हूं। मैं इसे कैसे हल करता हूं? 

  बिल्ली फ़ाइल | Sed '/ ^ - / d'

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