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From: Vitaly Lipatov <lav@altlinux.ru>
To: ALT Devel discussion list <devel@lists.altlinux.org>
Subject: [devel] О присваивании переменных в циклах на bash
Date: Tue, 27 Dec 2005 11:07:35 +0300
Message-ID: <200512271107.38272.lav@altlinux.ru> (raw)

Простая программа:

TEST=orig
for i in first ; do
        TEST=new
done
echo $TEST

Какое слово она выведет? Конечно же
new


А вот эта?
TEST=orig
echo first | while read i ; do
        echo "HEHE"
        TEST=new
done
echo $TEST

Вот и не угадали - выведен она 
HEHE
orig


В /usr/bin/sisyphus_relink наблюдаем такой код:
    cat "$list" |while read n; do
        f="files/$rfiles/$n"
        [ -f "$f" ] || continue
        $debug ln -s $verbose "$r/$n" "$d/" || rc=1
    done
    return $rc

получается rc тоже не присвоится и в коде ошибка?

Но как же всё таки присваивать переменные внутри таких циклов?

-- 
Lav
Виталий Липатов
Санкт-Петербург
GNU! ALT Linux Team! WINE! LaTeX! LyX! http://freesource.info


             reply	other threads:[~2005-12-27  8:07 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-12-27  8:07 Vitaly Lipatov [this message]
2005-12-27  8:19 ` Sergey Pinaev
2005-12-27  8:29   ` Alexey I. Froloff
2005-12-27  9:05     ` Vitaly Lipatov
2005-12-27  9:10       ` Sergey Pinaev
2005-12-27  9:37         ` [devel] " Vitaly Ostanin
2005-12-27  9:41           ` Sergey Pinaev
2005-12-27 10:03             ` Vitaly Ostanin
2005-12-27 10:04             ` Aleksey Avdeev
2005-12-27 12:53               ` Ivan Fedorov
2005-12-27 13:22                 ` Aleksey Avdeev
2005-12-27 13:57                   ` Ivan Fedorov
2005-12-28 12:25           ` Sergey V Turchin
2006-01-12 15:10             ` [devel] Re: н ОПХЯБЮХБЮМХХ ОЕПЕЛЕММШУ Б ЖХЙКЮУ МЮ bash Vitaly Ostanin
2006-01-12 17:05               ` [devel] Re: ... bash Sviatoslav Sviridov
2006-01-13 10:29                 ` [devel] bash Vitaly Ostanin
2006-01-13 10:43                   ` Sviataslau Svirydau
2006-01-13 11:50                     ` Vitaly Ostanin
2006-01-13 13:19                       ` Dmitry V. Levin
2005-12-27  8:30   ` [devel] О присваивании переменных в циклах на bash Vitaly Lipatov
2005-12-27  8:33     ` Sergey Pinaev
2005-12-27 20:27     ` Denis Ovsienko

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