如何用单条命令行按另一文件行范围替换不同文件的指定字符串

基础文件说明 #

• 0.txt 和 0-1.txt 内容完全一致，内容如下：

"#sun\t",
"car_snif = house.group_tree(home_cool)\t",
"machine(shoes_shirt.shop)\t",
"car_snif = house.group_tree(home_cool)\t",
"machine(shoes_shirt.shop)\t",
"car_snif = house.group_tree(home_cool)\t",
"machine(shoes_shirt.shop)\t",
"car_snif = house.group_tree(home_cool)\t",
"machine(shoes_shirt.shop)\t",
"#sun\t",
"car_snif = house.group_tree(home_cool)\t",
"machine(shoes_shirt.shop)\t",
"car_snif = house.group_tree(home_cool)\t",
"machine(shoes_shirt.shop)\t",
"car_snif = house.group_tree(home_cool)\t",
"machine(shoes_shirt.shop)\t",
"car_snif = house.group_tree(home_cool)\t",

• 源文件 1.txt 内容如下：

(food, apple,)(bag, tortoise,)
(sky, cat,)(sun, sea,)
(car, shape)(milk, market,)
(man, shirt)(hair, life)
(dog, big)(bal, pink)

需求说明 #

1. 处理0.txt：将其中home_cool每2次连续出现替换为1.txt前2行内容，每个替换值连续使用2次，循环复用，最终结果输出到2.txt。
2. 处理0-1.txt：将其中home_cool每2次连续出现替换为1.txt第3行到第5行内容，每个替换值连续使用2次，循环复用，最终结果输出到3.txt。

单命令实现方案 #

使用单条awk命令即可完成全部操作，无需拆分多个独立处理片段：

awk 'NR==FNR{arr[NR]=$0;next}FILENAME=="0.txt"{if(/home_cool/){cnt1++;repl_idx=int((cnt1-1)/2)%2+1;gsub("home_cool",arr[repl_idx])}print > "2.txt";next}FILENAME=="0-1.txt"{if(/home_cool/){cnt2++;repl_idx=int((cnt2-1)/2)%3+3;gsub("home_cool",arr[repl_idx])}print > "3.txt"}' 1.txt 0.txt 0-1.txt

如果需要可读性更高的版本，可展开为多行格式：

awk '
# 预加载1.txt的所有内容到数组
NR == FNR {
    arr[NR] = $0
    next
}
# 处理0.txt，输出到2.txt
FILENAME == "0.txt" {
    if (/home_cool/) {
        cnt1++
        # 按规则取1.txt前2行循环替换
        repl_idx = int((cnt1 - 1) / 2) % 2 + 1
        gsub("home_cool", arr[repl_idx])
    }
    print > "2.txt"
    next
}
# 处理0-1.txt，输出到3.txt
FILENAME == "0-1.txt" {
    if (/home_cool/) {
        cnt2++
        # 按规则取1.txt第3-5行循环替换
        repl_idx = int((cnt2 - 1) / 2) % 3 + 3
        gsub("home_cool", arr[repl_idx])
    }
    print > "3.txt"
}
' 1.txt 0.txt 0-1.txt

内容的提问来源于stack exchange，提问作者7beggars_nnnnm