fix two compatibility issues#3

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springlie wants to merge 2 commits intotlatsas:masterfrom

springlie:master

Commits on Feb 11, 2017

fix compatibility error in Zsh, checked with: "zsh ./test.sh"
springlie
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fix compatibility error with *BSD echo, checked with: "./test.sh", "sh ./test.sh", "zsh ./test.sh", "bash ./test.sh"
springlie
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