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There's something I'm having trouble understanding concerning sed behavior. 

sed -n "/pattern/,$p" < input.inp > output.out

gives the following error 

sed: -e expression n°1, caractère 10: `,' inattendue

(my system is in french).

sed -n '/pattern/,$p' < input.inp > output.out

Works fine

I've personnally used commands like 

sed -n "/begin/,/end/p" < input.inp > output.out

with both single or double quotes, and they work just fine.

In case it's useful, I have sed version: sed (GNU sed) 4.2.2

PsiX
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user22277
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1 Answers1

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In double quotes, the shell, not sed, will evaluate $p. Since you probably haven't set a variable named p, sed will only see /pattern/,. To prevent this from happening, you'd need to escape the $ to the shell, by writing \$ instead:

sed -n "/pattern/,\$p" < input.inp > output.out

(You can imagine that using single quotes is a lot easier on the eyes and brain, unless you need shell variables in your expression.)

Ulrich Schwarz
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