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34 lines
656 B
Bash
34 lines
656 B
Bash
#!/usr/bin/env bash
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################### if 语句 ###################
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# 写成一行
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if [[ 1 -eq 1 ]]; then echo "1 -eq 1 result is: true"; fi
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# Output: 1 -eq 1 result is: true
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# 写成多行
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if [[ "abc" -eq "abc" ]]
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then
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echo ""abc" -eq "abc" result is: true"
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fi
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# Output: abc -eq abc result is: true
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################### if else 语句 ###################
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if [[ 2 -ne 1 ]]; then
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echo "true"
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else
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echo "false"
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fi
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# Output: true
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################### if elif else 语句 ###################
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x=10
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y=20
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if [[ ${x} > ${y} ]]; then
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echo "${x} > ${y}"
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elif [[ ${x} < ${y} ]]; then
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echo "${x} < ${y}"
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else
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echo "${x} = ${y}"
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fi
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# Output: 10 < 20
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