BASH 检查今天是否是一个月的第一天
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BASH check if today is 1st day of month
提问by erizo
I have a bash script and I need it to fulfill some conditions if it is 1st day of month.
I have written this code
我有一个 bash 脚本,如果是一个月的第一天,我需要它来满足某些条件。
我已经写了这段代码
ifStart=`date '+%d'`
if [$ifStart == 01]
then
test=`/bin/date --date='1 day ago' +'%Y-%m'`
echo $test
fi
I expect it to show 2013-03 today, but I get an errormessage:
Line 2 command not found.
我希望它今天显示 2013-03,但我收到一条错误消息:
找不到第 2 行命令。
test=`/bin/date --date='1 day ago' +'%Y-%m'`
this part works well without if.
Any suggestions?
这部分在没有 if 的情况下运行良好。
有什么建议?
回答by FatalError
The command that's not being found is actually due to your if statement. You need spaces:
未找到的命令实际上是由于您的 if 语句造成的。你需要空格:
if [ $ifStart == 01 ]
Otherwise [$ifStartwill be interpreted as a command.
否则[$ifStart将被解释为命令。

