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🔥 Bash-фишка дня: замена строк в файле без sed и awk

Иногда хочется быстро заменить строку в файле без сложных конструкций. Вот способ сделать это с чистым Bash и while read:

🛠 Скрипт: заменить слово в файле


#!/bin/bash

INPUT="config.txt"
OUTPUT="config_new.txt"
SEARCH="localhost"
REPLACE="127.0.0.1"

while IFS= read -r line; do
    echo "${line//$SEARCH/$REPLACE}"
done < "$INPUT" > "$OUTPUT"

📌 Что тут происходит:

* IFS= read -r line — читаем файл построчно, без обрезки пробелов.
* ${line//$SEARCH/$REPLACE} — заменяем все вхождения $SEARCH на $REPLACE.
* Результат сохраняем в новый файл.

⚡️ Подходит, когда sed недоступен (да, бывает) или нужна более понятная логика замены.

👉@bash_srv

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Create: 2025-05-19
Last Update: 2025-07-06 14:26:31


#!/bin/bash

INPUT="config.txt"
OUTPUT="config_new.txt"
SEARCH="localhost"
REPLACE="127.0.0.1"

while IFS= read -r line; do
    echo "${line//$SEARCH/$REPLACE}"
done < "$INPUT" > "$OUTPUT"

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Date: 2025-07-06| telegram

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