When I try to build the glibc following the Linux from scratch instruction Chapter 6.9. Glibc-2.14.1, I get a syntax error about $(command). The simplified problem is that I can type echo `ls` and get the expected result.However when I type echo $(ls)which should do the same thing, but I get**bash: command substitution: line 78: syntax error near unexpected token `)'bash: command substitution: line 78: `ls)'**I don't know why the bash program that I created following the instruction of Linux from scratch cannot handle $() correctly.The glibc problem is here.Any idea? 
Linux from scratch's bash problem: $() syntax error
linux;lfs