The phrase \$somevar escapes the dollar sign, avoiding interpretation of the variable in the command where the prompt is set. Instead, the interpretation occurs whenever the prompt is drawn.
$somevar 可以对美元符号进行转义，避免在设置提示符的命令中对该变量进行解释，而是在显示提示符时对其进行解释。
For the first step, you should learn your shell's peculiarities, the way that Unix passes command-line arguments to Perl and Perl's interpretation of those arguments.
第一步，您应该学习shell的特性：Unix将命令行参数传递给Perl的方式及这些参数的Perl解释方法。
No doubt under a higher command, but its orders, which are more general, require interpretation by him and upon that interpretation depends the life of ten, fourteen or twenty men.
无疑的，他是在上级的命令下这样做的，但是这命令极为泛泛，必须他来加以解释。而就在这解释上，决定了十人，十四人，或二十个人的生命。
No doubt under a higher command, but its orders, which are more general, require interpretation by him and upon that interpretation depends the life of ten, fourteen or twenty men.
无疑的，他是在上级的命令下这样做的，但是这命令极为泛泛，必须他来加以解释。而就在这解释上，决定了十人，十四人，或二十个人的生命。
应用推荐