linux - Use sed to delete all leading/following blank spaces in a text file -

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फ़ाइल 1: 

  हैलो दुनिया

कैसे

> sed -e 's / ^ [\ t] * //' a & gt; बी

प्रमुख स्थानों के लिए। 

  sed 's / * $ //' b & gt; C

और यह पीछे के स्थान के लिए है।

आप लगभग मिल गए इसे: 

  sed -e 's / ^ [\ t] * //; s / [\ t] * $ //' ए & gt; <  
 इसके अलावा  sed  के कुछ स्वादों पर, इनलाइन संपादन के लिए एक विकल्प भी है: 
 
  sed -i -e 'S / ^ [\ t] * //; s / [\ t] * $ //' a

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