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Article #855Re: 初手问一个脚本的小问题
From: yunhai
Date: Sat, 27 Sep 2008 08:44
Date: Sat, 27 Sep 2008 08:44
58 lines
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4825 bytes
On Sat, 27 Sep 2008 16:12:05 +0800, Jian Lee <jian.li@turbolinux.com.cn> wrote: > > �Ǻǣ����ÿ�������֪��Ҳ����̫ϸ�� > > ������һ�� "&"���ó����ں�̨���У���exec��ȫ��һ������IDҲ����� > ��ID��һ��ֻ�����ó���̨���У����ǿ��Բ��صȴ���Ľ�����ܵõ� > ��shell��ʾ�� > ��ֱ����terminal��ִ��exec opera &��opera��Ϊterminal���ӽ���������滻����ʲô��̣� > ִ��sh�ű��ǿ�һ��sh��̵ģ���ű��е�opera�ĸ���̾������sh����ˡ� > > ֱ����terminal��ִ��sh����õ�sh��ʾ�������ڽű��ﲻ��exec��ʱ����ps -e|grep sh�鿴��̣�û����sh�����sh��̵�����ȥ�ˣ� ������˼����������Ƚ϶ࡣ > yunhai <yunyousihaiAT@gmail.dotcom> writes: > >> On Sat, 27 Sep 2008 13:23:02 +0800, Jian Lee >> <jian.li@turbolinux.com.cn> wrote: >> >>> �滻����exec����Ľ�̣��ٸ����ӣ� >>> >>> ��һ��terminal��������� >>> # exec ls >>> >>> ����ʲô�ˣ��Dz���terminal���ڹر��ˣ�����Ĺ����ǣ� >>> terminal���������ls��̣�ls����滻����ĸ���̣�Ҳ����terminal�� >>> �?terminal��̾Ͳ������ˡ�ls������ϣ��˳��ˣ����ڵ�Ȼ�ر��ˡ� >>> >>> ��һ�������ǿ��Կ������ ID����һ��terminal�� >>> # echo $$ ; ���Կ�����ǰ��̵�ID >>> # bash ; �����ڿ���ID��һ�������治һ���ˣ���Ϊ����������һ���µĽ�� >>> # echo $$ ; ��ס��������صļҳ�ID�ţ����Ϊ ���ס� >>> # exec sh >>> # echo $$ ; ���ﷵ�صĽ��͡��ס���һ��ġ� >> >> лл��Ľ��͡� >> >> ����һЩ�����ġ� >> ��exec���滻��̣�������exec������������&�Ļ�����ôʵ��Ч���Dz��Ǿ� >> ����exec�����һ����߶���ʹ���µĽ��ID��������terminal��ִ��exec >> opera &��opera &�� >> >> �������������ڽű���ʹ��exec���������ֱ����terminal��ִ��exec���е㲻 >> һ��ֱ��ִ��exec opera֮�ر�opera��terminal����Ҳ����֮�رգ����� >> ���ڽű����õĻ����ر�opera��ԭ����terminal����رգ����IDҲ���䡣���� >> Ϊʲô�أ���ִ�нű���ʱ���¿�һ��bash�𣿿����ڽű��ﲻ��exec���� >> ����Ҳû�з��ֶ��һ��bash�� >> -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
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From: yunhai <yunyousihaiAT@gmail.dotcom>
Newsgroups: cn.comp.os.linux
Subject: Re: 初手问一个脚本的小问题
Date: Sat, 27 Sep 2008 16:44:22 +0800
Organization: Bentium Ltd. (CN99)
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