Crontab:无效选项--'；1'；crontab:使用错误：键入crontab-1时无法识别选项

我正在尝试在我的digital ocean服务器上使用crontab。当我键入

crontab-1

时，它会给我这个错误

crontab: invalid option -- '1'
crontab: usage error: unrecognized option
usage:  crontab [-u user] file
        crontab [ -u user ] [ -i ] { -e | -l | -r }
                (default operation is replace, per 1003.2)
        -e      (edit user's crontab)
        -l      (list user's crontab)
        -r      (delete user's crontab)
        -i      (prompt before deleting user's crontab)

crontab: usage error: file name must be specified for replace
usage:  crontab [-u user] file
        crontab [ -u user ] [ -i ] { -e | -l | -r }
                (default operation is replace, per 1003.2)
        -e      (edit user's crontab)
        -l      (list user's crontab)
        -r      (delete user's crontab)
        -i      (prompt before deleting user's crontab)

当我键入

crontab-I

时，它会给我这个错误

crontab: invalid option -- '1'
crontab: usage error: unrecognized option
usage:  crontab [-u user] file
        crontab [ -u user ] [ -i ] { -e | -l | -r }
                (default operation is replace, per 1003.2)
        -e      (edit user's crontab)
        -l      (list user's crontab)
        -r      (delete user's crontab)
        -i      (prompt before deleting user's crontab)

crontab: usage error: file name must be specified for replace
usage:  crontab [-u user] file
        crontab [ -u user ] [ -i ] { -e | -l | -r }
                (default operation is replace, per 1003.2)
        -e      (edit user's crontab)
        -l      (list user's crontab)
        -r      (delete user's crontab)
        -i      (prompt before deleting user's crontab)

---

如何解决此问题？提前谢谢。

也许你想要

crontab-l

（qwerty风格键盘上

k

-键右侧的字母）？天哪！我以为那是一个“1”谢谢你