单选题In which directory are the basic Linux commands such as gzip， gunzip and zcat installed？（）A/opt/freeware/binB/usr/bin/freewareC/var/freeware/binD/usr/sbin/freeware
单选题
In which directory are the basic Linux commands such as gzip， gunzip and zcat installed？（）
A
/opt/freeware/bin
B
/usr/bin/freeware
C
/var/freeware/bin
D
/usr/sbin/freeware
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