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18 lines
251 B
Bash
18 lines
251 B
Bash
#!/usr/bin/env bash
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# testing closing file descriptors
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exec 3> test
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echo "This is a test line of data" >&3
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# closing file descriptor
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exec 3>&-
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echo "This won't work" >&3
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cat test
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#覆盖前一个test文件
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exec 3> test
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echo "This'll be bad" >&3
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