python - How to force os.system() to use bash instead of shell -


मैंने कोशिश की है 

  os.system ( 'GREPDB = "मेरा आदेश"') os.system ( '/ bin / bash -c \' $ GREPDB \ '')   
 हालांकि कोई भाग्य, दुर्भाग्य से मैं की जरूरत है इस कमांड को bash और subp के साथ चलाने के लिए इस वातावरण में एक विकल्प नहीं है, मैं अजगर 2.4 तक सीमित हूं। सही दिशा में मुझे पाने के लिए कोई भी सुझाव?   
 
 
 दोनों कमांड विभिन्न subshells में निष्पादित हैं।  
 पहले  सिस्टम  कॉल में चर को सेट करना दूसरे  सिस्टम  कॉल को प्रभावित नहीं करता है।  
 आपको एक कमांड को एक स्ट्रिंग (;  के साथ संयोजन करके) डालनी होगी।  
  & gt; & gt; & gt; आयात ओएस & gt; & gt; & gt; 123 0   
  नोट  आप उपयोग करने की आवश्यकता <; os.system ( '-c "$ GREPDB" / bin / bash GREPDB = "गूंज 123"') कोड> "$ GREPDB"  के बजाय  '$ GREPDBS'  के बजाय अन्यथा इसे विस्तारित होने के बजाय शब्दशः व्याख्या की जाती है।  
 यदि आप  उपप्रोसेस :  
 > gt; & gt; & gt; आयात उपप्रक्रिया & gt; & gt; & gt; 123 0

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