$awk'BEGIN \{ printf"Field 1\rField 2\rField 3\rField 4\n"}'Field4 Printf Format Specifiers The following example shows the basic usage of the format specifiers: $catprintf-format.awkBEGIN { printf"s--> %s\n","
20 variable = sprintf("string with format specifiers ",expr1,expr2,...) 该函数和printf的差别等同于C语言中printf和sprintf的差别。前者将格式化后的结果输出到输出流,而后者输出到函数的返回值中。 /> awk 'BEGIN{line = sprintf("%-15s %6.2f ", "hello",4.2); print line}' hello 4.20 时间函数...
variable = sprintf("string with format specifiers ",expr1,expr2,...) 该函数和printf的差别等同于C语言中printf和sprintf的差别。前者将格式化后的结果输出到输出流,而后者输出到函数的返回值中。 /> awk 'BEGIN{line = sprintf("%-15s %6.2f ", "hello",4.2); print line}' hello 4.20 时间函数: ...
printf is "formatted" print (thus the extra f). It uses escape sequences and format specifiers that should be familiar to most programmers. %dis a decimal.%fis a float.%.2f- float with 2 digits. Here are all the format specifiers (taken from awk man): The printf Statement The AWK ve...
The format string is very similar to that in the ISO C library functionprintf. Most offormatis text to output verbatim. Scattered among this text areformat specifiers-- one per item. Each format specifier says to output the next item in the argument list at that place in the format. ...
在打印数字的时候你也许想控制数字的格式,我们通常用printf来完成这个功能。awk的特殊变量OFMT也可以在使用print函数的时候,控制数字的打印格式。它的默认值是"%.6g"---小数点后面6位将被打印。 /> awk 'BEGIN { OFMT="%.2f"; print 1.2456789, 12E-2}' 1.25...
For the %s format, it specifies the maximum number of characters from the string that should be printed. The dynamic width and prec capabilities of the ISO C printf() routines are supported. A * in place of either the width or prec specifications causes their values to be taken from the ...
awk编程: 1. 变量: 在awk中变量无须定义即可使用,变量在赋值时即已经完成了定义。变量的类型可以是数字、字符串。根据使用的不同,未初始化变量的值为0或空白字符串” “,这主要取决于变量应用的上下文。下面为变量的赋值负号列表: 符号 含义 等价形式 = a = 5 a = 5
The format specifiers are written like this: %[modifier]control-letter This list shows the format specifiers you can use with printf: c Prints numeric output as a string. d Prints an integer value. e Prints scientific numbers. f Prints float values. ...
As in C-language, AWK also has format specifiers. The AWK version of the printf statement accepts the following conversion specification formats −%cIt prints a single character. If the argument used for %c is numeric, it is treated as a character and printed. Otherwise, the argument is ...