[root@longwang ~]# awk 'BEGIN{arr["i"]="x";arr["j"]="y";if("abc"in arr){print"存在"}else{print"不存在"}}'不存在 若要遍历数组中的每个元素,要使用 for 循环 for(varin array) {for-body} 注意:var会遍历array的每个索引 范例:遍历数组 [root@longwang~]# awk 'BEGIN{weekd["mon"]=...
15 16# 1.下载wget --no-check-certificate https://mirrors.tuna.tsinghua.edu.cn/gnu/gawk/gawk-4.2.0.tar.gz# 2.解压、进入解压后目录tar xf gawk-4.2.0.tar.gzcdgawk-4.2.0/# 3.编译,并执行安装目录为/usr/local/gawk4.2./configure --prefix=/usr/local/gawk4.2 && make && make install# 4...
The split function splits the given string into an array; the default separator for elements of the record is FS. for (idx in vals) { sum += vals[idx] } We go through the array and calculate the sum. In each of the loop cycles, the idx variable is set to the current index of ...
awk script_file var=value input_file 下述脚本对比检查文件中域号和指定数字。这里使用了NF变量MAX,表示指定检查的域号,使用双引号将域分隔符括起来,即使它是一个空格。 $ pg fieldcheck.awk #!/bin/awk -f # check on how many fields in a file # name:fieldcheck.awk # to call: fieldcheck MAX=n...
AWK 的关联数组很好地映射到了 Go 的map[string]value类型,因此可以轻松实现这些。说到这个,Go 的垃圾收集器意味着我们不必担心编写自己的 GC。 输入和输出在io.go中处理。所有 I/O 都经过缓冲以提高效率,我们使用 Go 的bufio.Scanner来读取输入记录和bufio.Writer缓冲输出。
In this example, the awk command defines two input files. The same file, but processed twice. The output is the first field value and the FNR variable. Now, check the NR variable and see the difference: $ awk ' BEGIN {FS=","} ...
array named "$base" ref+=("$f") # create a list of filenames for the basename (( bases[$base]++ )) # count the number of files for the basenamedonefor base in "${!bases[@]}"; do # loop over the basenames if (( ${bases[$base]} == 2 )); then # check if the ...
for (i in array) {statement1, statement2, ...} 遍历数组下标switch(expression){case VALUE or /REGEXP/:tatement1,statement2,...default: stat1, ...} 内置函数: split(string, array [, fieldsep [, seps ] ]) fieldsep 为分隔符, 结果保存至 array 为名的数组中; 下标从 0 开始的序列 ...
-vVAR_NAME=VALUE:变量赋值 -f /PATH/FROM/AWK_SCRIPT: 1、awk的输出命令之一:print 用法:print item1,item2,…… item: 字符串:用引号引用 变量:显示变量的值 引用变量:直接使用变量名 数值:无需加引号 示例:字符串输出,向系统中用户问好 [root@localhost ~]# awk -F: '{print"hello",$1}' /etc...
In this example, the awk command defines two input files. It defines the same input file 2 times. The script prints the first data field value and the current value of the FNR variable. Now, let’s add the NR variable and see the difference: 1 2 3 4 5 6 7 $ awk ' BEGIN {FS...