经常用将字符串分割为数组的需求。在shell中常用的方式为以下两种 代码语言:javascript 代码运行次数:0 #!/bin/bashfunctionsplit_1(){x="a,b,c,d"OLD_IFS="$IFS"IFS=","array=($x)IFS="$OLD_IFS"foreachin${array[*]}doecho $each done}functionsplit_2
或者，您也可以使用awk '{print $(NF-1)}'打印该行上的倒数第二个字段（NF是一个awk变量，它知道...
2、split - 划分文件 split 将一个大文件划分成几个较小的文件。(split a file into pieces) 语法:split [OPTION]... [FILE [PREFIX]] 常用组合:split [-d] [-a num] [-l lines] [file [prefix]] -a num,num是创建文件名时用作文件名后缀的字符或数字的数量,默认是aa、ab、ac... -d,(digits...
默认的字段分隔符为“TAB”；-f：显示指定字段的内容；-n：与“-b”选项连用，不分割多字节字符；--complement：补足被选择的字节、字符或字段；--out-delimiter= 字段分隔符：指定输出内容是的字段分割符；--help：显示指令的帮助信息；--version：显示指令的版本信息。
split 把文件切割成多个零碎的部分 1.2、详细解析 1.2.1、ls 语法结构:ls [OPTION]… [FILE]… 其中OPTION表示选项,可以省略不用。FILE表示查看的文件,也可以省略,可以多个。这里 的文件表示的是广义的文件,可以是文本文件,目录文件或者其他特殊文件等。 常见选项以及含义: -a, --all:隐藏文件也会被列举出来 ...
When you use quotes, you’re often trying to create a literal, a string that you want the shell to pass to the command line untouched. In addition to the $ in the example that you just saw, other similar circumstances include when you want to pass a * character to a command such as...
awk '{ split($3,date,"-") } END{ for(i in date){ print i"\t"date[i] } } ' emp.txt角色处理:if $2 ==0 map_name_role[$1] = “manager” else map_name_role[$1] = “worker”整合:awk '{ split($3, date, "-") if (date[2] == "01") { map_name_sala[$1]+=$5...
As stated earlier, if you find yourself writing something that looks convoluted, especially if it involves complicated string or arithmetic operations, you should probably look to a scripting language like Python, Perl, or awk. 然而,在某个特定的点上(尤其是当你开始使用read内置命令时),你必须问...
AWK processes your data one record at a time. The record separator is the delimiter used to split the input data stream into records. By default, this is the newline character. So if you do not change it, a record is one line of the input file. NR –The current input record number...
-n with -b: don't split multibyte characters --complement complement the set of selected bytes, characters or fields -s, --only-delimited do not print lines not containing delimiters --output-delimiter=STRING use STRING as the output delimiter ...