运行cron作业时会在查找匹配的``'时创建错误的意外EOF

Question

我可以看到这是"常见的"错误,但在我的情况下无法找到解决方案......

运行Crontab作业:

expr `date +%W` % 2 > /dev/null && curl https://mysite.com/myscript

它会导致错误:

/bin/sh: -c: line 0: unexpected EOF while looking for matching ``'
/bin/sh: -c: line 1: syntax error: unexpected end of file

你能帮我解决一下吗？非常感谢你提前!

Answer 1

你必须逃脱这个%角色.man 5 crontab说:

   Percent-signs (%) in the command, unless  escaped  with  backslash  (\),
   will be changed  into  newline  characters, and all data after the first %
   will be sent to the command as standard input.