[DJ Mogarych]

Код:

from='/home/user/pg.log'
to='/home/user/pg-new.log'

while read p; do
  if echo "$p" |grep -q --binary-files=text -v '[а-я]'; then
    echo "$p" |iconv -f WINDOWS-1251 -t UTF-8 >> $to
  else
    echo "$p" >> $to
  fi
done <$from

Литература:
https://stackoverflow.com/questions/...a-file-in-bash
https://unix.stackexchange.com/quest...native-methods

[Swit0]

DJ Mogarych, спасибо, попробую.