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Top Forums Shell Programming and Scripting shell script: cannot shift error? Post 302569180 by Peasant on Sunday 30th of October 2011 12:28:16 AM
Old 10-30-2011
Cause " allows your variables to expand inside sed without extra work, while when enclosed in ' they will be taken as is.

Example :
Code:
$ A=a; export A;
$ echo "a" | sed "s/$A/b/g"
b
$ echo "a" | sed 's/$A/b/g'
a
$ echo "a" | sed 's/'$A'/b/g'
b
$

This User Gave Thanks to Peasant For This Post:
 

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