testcycle (1)

#!/bin/bash

file="/tmp/info"
tmpfile="/tmp/tmp_tst"

replace ()
{
    replace_what="$1"
    replace_with="$2"
    sed -i "s/$replace_what/$replace_with/g" "$tmpfile"
}

replace_all ()
{
    replace "плотину" "the dam"
    replace "фотографий" "photos"
    replace "оказалось" "it has appeared that"
    replace "наводнение" "the flood"
    replace "В итоге" "As a result,"
}

test_cycle ()
{
    echo "Прогон цикла замены..."
    let i=0
    while [ $i -le "500" ]; do
        replace_all
        ((i++))
    done
    echo "Завершено."
}

cat "$file" > "$tmpfile"
time test_cycle