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使 ${m} ARCH=${ARCH} >&!制作_${m}

tag-icon • tag-icon csh
使 ${m} ARCH=${ARCH} >&!制作_${m}

在此命令中（C shell 脚本）

make ${m} ARCH=${ARCH} >&! Make_${m}

这是什么>&!意思？

答案1

来自手册页（对于 tcsh）：

   > name
   >! name
   >& name
   >&! name
           The file name is used as standard output.  If the file does not
           exist then it is created; if the file exists, it is  truncated,
           its previous contents being lost.

           If  the shell variable noclobber is set, then the file must not
           exist or be a character  special  file  (e.g.,  a  terminal  or
           `/dev/null')  or an error results.  This helps prevent acciden‐
           tal destruction of files.  In this case the `!'  forms  can  be
           used to suppress this check.

           The  forms  involving  `&' route the diagnostic output into the
           specified file  as  well  as  the  standard  output.   name  is
           expanded in the same way as `<' input filenames are

所以它重定向标准输出和标准错误到给定的文件中，覆盖noclobber检查。

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