尝试执行"sed"命令但得到"command not found"错误

Question

我正在尝试执行以下命令:

`sed 's/49%100%/49%!100%/' /etc/nagios/objects/services.cfg`

但是我收到了这个错误

-bash: ###############################################################################: command not found

如果我尝试在没有后退滴答的情况下运行它,该命令将起作用.

我尝试过以下方法:

`sed 's/49%100%/49%!100%/' /etc/nagios/objects/services.cfg` 2>&1

`sed 's/49%100%/49%!100%/' /etc/nagios/objects/services.cfg`> /dev/null

但它不起作用.

Answer 1

您不需要返回标记或$()在sed此处调用,因为您的要求不是将输出解释sed为命令.

如果您打算修改/etc/nagios/objects/services.cfg,可以这样做:

sed 's/49%100%/49%!100%/' /etc/nagios/objects/services.cfg > /etc/nagios/objects/services.cfg.new

或者,进行就地编辑(当你绝对确定你的sed表达是正确的时):

sed -i 's/49%100%/49%!100%/' /etc/nagios/objects/services.cfg

在像macOS这样的BSD系统上,sed -i需要一个参数.命令是:

sed -i '' 's/49%100%/49%!100%/' /etc/nagios/objects/services.cfg

有关背面刻度及其更现代形式的更多信息,请参阅这些帖子$():