每多少行添加一行文字

#!/bin/bash
# 设置变量
COUNT=0
CHARACTER=$1
NUMBER=$2
if [[ "$#" -eq 0 ]]; then
    echo "Example: cat delete.sql |add_character.sh 'select sleep(2);' 500 #每500行添加一行select sleep(2);"
    # else if body
else
    # 循环读取输入流
    while read LINE; do
        # 每500行添加指定字符
        if [ $COUNT -eq $NUMBER ]; then
            echo "$CHARACTER"
            COUNT=0
        fi

        echo "$LINE"
        COUNT=$((COUNT + 1))
    done
fi

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使用方法

[carry@localhost ~]# sudo chmod +x /usr/bin/add_character.sh 
[carry@localhost ~]# add_character.sh 
Example: cat delete.sql |add_character.sh 'select sleep(2);' 500 #每500行添加一行select sleep(2);

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上次更新: 8/28/2024

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