bash 基础值太大（错误标记为“0925”）
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Value too great for base (error token is "0925")
提问by oompahloompah
I have the following logic in my bash script:
我的 bash 脚本中有以下逻辑：
#!/bin/bash
local_time=$(date +%H%M)
if (( ( local_time > 1430 && local_time < 2230 ) || ( local_time > 0300 && local_time < 0430 ) )); then
# do something
fi
Every now and then, I get the error specified in the title (any time above 08xxappears to trigger the error).
时不时地，我会收到标题中指定的错误（上面08xx出现的任何时间都会触发错误）。
Any suggestions on how to fix this?
对于如何解决这个问题，有任何的建议吗？
I am running on Ubuntu 10.04 LTS
我在 Ubuntu 10.04 LTS 上运行
[Edit]
[编辑]
I modified the script as suggested by SiegeX, and now, I am getting the error: [: 10#0910: integer expression expected.
我按照 SiegeX 的建议修改了脚本，现在出现错误：[: 10#0910: integer expression expected.
Any help?
有什么帮助吗？
回答by SiegeX
bashis treating your numbers as octalbecause of the leading zero
bash由于前导零，将您的数字视为八进制
From man bash
从 man bash
Constants with a leading 0 are interpreted as octal numbers. A leading 0x or 0X denotes hexadecimal. Otherwise, numbers take the form [base#]n, where base is a decimal number between 2 and 64 represent- ing the arithmetic base, and n is a number in that base. If base# is omitted, then base 10 is used.
带有前导 0 的常量被解释为八进制数。前导 0x 或 0X 表示十六进制。否则，数字采用 [base#]n 的形式，其中 base 是表示算术基数的 2 到 64 之间的十进制数，n 是该基数中的数字。如果省略 base#，则使用基数 10。
To fix it, specify the base-10 prefix
要修复它，请指定 base-10 前缀
#!/bin/bash
local_time="10#$(date +%H%M)"
if (( ( local_time > 1430 && local_time < 2230 ) || ( local_time > 0300 && local_time < 0430 ) )); then
# do something
fi
回答by lambmj
回答by Serge Stroobandt
Solving the issue within the conditional test
解决条件测试中的问题
One may be forced to keep the variable as it is for a variety of reasons (e.g. file naming issues). If this is the case, solve the issue withinthe conditional test by explicitly specifying base10#:
由于各种原因（例如文件命名问题），人们可能被迫保持变量不变。如果是这种情况，解决问题中的条件测试通过明确的基础10#：
#!/bin/bash
local_time=$(date +%H%M)
if (( ( 10#${local_time} > 1430 && 10#${local_time} < 2230 ) || ( 10#${local_time} > 0300 && 10#${local_time} < 0430 ) )); then
# do something
fi
