VARIABLES, RECORDS AND FIELDS AWK variables are dynamic; they come into existence when they are first used. Their values are either floating-point num Read More
Arrays Arrays are subscripted with an expression between square brackets ([ and ]). If the expression is an expression list (expr, expr ...) then the Read More
match(s, r [, a]) Return the position in s where the regular expression r occurs, or 0 if r is not present, and set the values of RSTART and RLENGTH. Read More
gsub(r, s [, t]) For each substring matching the regular expression r in the string t, substitute the string s, and return the number of substitutions Read More
shell函数不同于除“wildcard”函数之外的其它函数。make可以使用它来和外部通信。 函数功能:函数“shell”所实现的功能和shell中的引用(``)相同。实现对命令的扩展。这就意味着需要一个shell 命令作为此函数的参数,函数的返回结果是此命令在shell中的执行结果。make仅仅 Read More
1 /** 2 * alloc_chrdev_region() - register a range of char device numbers 3 * @dev: output parameter for first assigned number 4 * @baseminor: first of the requested range of minor numbers 5... Read More