Linux系统的主要shell的名字和它们各自默认的提示符是什么？ 什么是Linux的登录shell与非登录shell？
linux\u7684\u5e38\u89c1shell\u53ca\u5176\u63d0\u793a\u7b26SHELL \u6742\u8c08[1]: \u79cd\u7c7b, \u7248\u672c\u53ca\u9009\u62e9
\u51e1\u662f\u4f7f\u7528 *INX \u7684\u4eba, \u4e0d\u8bba\u662f\u4f5c\u4e3a login shell \u8fd8\u662f\u7f16\u7a0b\uff0c\u591a\u5c11\u90fd\u8981\u63a5\u89e6\u5230 Shell\u3002
\u7ecf\u8fc7\u591a\u5e74\u7684\u53d1\u5c55\uff0c Shell \u7684\u79cd\u7c7b\u7e41\u591a\u3002\u9664\u4e86\u6211\u4eec\u719f\u6089\u7684 sh,ksh,csh, bash ... \u5916\uff0c
\u8fd8\u6709\u5404\u79cd free \u6216\u5546\u4e1a\u7248\u672c\u5982\uff1a RC, ES, EShell, psh, Zoidberg \u7b49\u7b49\u3002
\u79cd\u7c7b\u591a\u4e86\uff0c \u4e5f\u5c31\u6709\u7684\u6807\u51c6\u5316\u7684\u8981\u6c42\uff0c \u8fd9\u5c31\u662f POSIX \u7684\u7531\u6765\u3002
\u5176\u5b9e\uff0c\u5c31\u662f\u5e38\u89c1\u7684 Shell, \u4e5f\u662f\u529f\u80fd\u4e0d\u540c\uff0c \u98ce\u683c\u5404\u5f02\u3002\u4e00\u822c\u6765\u8bf4\uff0c \u4eba\u4eec\u5bb9\u6613\u56e4\u4e8e\u56fa\u6709
\u7684\u5e73\u53f0\uff0c \u4f7f\u7528 default \u7684 shell, \u4e5f\u5c31\u662f /bin/sh. \u7136\u800c\uff0c \u4e0d\u540c\u7684\u7cfb\u7edf\u7684 shell
\u4ece\u540d\u5b57\u5230 path \u90fd\u4e0d\u76f8\u540c\u3002 \u7531\u4e8e\u6700\u65e9\u7684 shell \u662f Bourne Shell\uff0c \u6240\u4ee5
UNIX \u4e0a\u7684 sh \u5c31\u662f Bourne Shell\u3002 \u4f46\u73b0\u5728\u6709\u4e9b\u6df7\u4e71\u4e86\uff0c \u6bd4\u5982 HP-UX 11i \u4e0a\u5df2\u53d8\u6210
POSIX sh \u4e86\u3002
Linux\u7684\u767b\u5f55shell\u4e0e\u975e\u767b\u5f55shell\u7684\u542b\u4e49\u53ca\u533a\u522b\uff1a
1\u3001\u542b\u4e49\uff1a\u767b\u5f55shell\uff0c\u6307\u7684\u662f\u5f53\u7528\u6237\u767b\u5f55\u7cfb\u7edf\u65f6\u6240\u53d6\u7684\u90a3\u4e2ashell\uff0c\u767b\u5f55shell\u5c5e\u4e8e\u4ea4\u4e92\u5f0fshell\u3002
\u767b\u5f55shell\u5c06\u67e5\u627e4\u4e2a\u4e0d\u540c\u7684\u542f\u52a8\u6587\u4ef6\u6765\u5904\u7406\u5176\u4e2d\u7684\u547d\u4ee4\uff0c\u7528\u6237\u767b\u5f55\u540e\uff0c\u5728\u7ec8\u7aef\u4e0a\u8f93\u5165\u547d\u4ee4\uff0cshell\u7acb\u5373\u6267\u884c\u7528\u6237\u63d0\u4ea4\u7684\u547d\u4ee4\uff0c\u5f53\u7528\u6237\u9000\u51fa\u540e\uff0cshell\u4e5f\u7ec8\u6b62\u4e86\u3002
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2\u3001\u5b8c\u6574\u5ea6\u4e0d\u540c\uff1a\u5982\u679c\u542f\u52a8\u4e86\u4e00\u4e2abash shell\u800c\u6ca1\u6709\u767b\u5165\u7cfb\u7edf\uff08\u5982\u5728CLI\u63d0\u793a\u7b26\u4e2d\u952e\u5165bash\uff09,\u5219\u542f\u52a8\u4e86\u4e00\u4e2a\u4ea4\u4e92\u5f0f\u975e\u767b\u5f55shell\u3002
\u4ea4\u4e92\u5f0f\u975e\u767b\u5f55shell\u6267\u884c\uff0fbashrc\u6587\u4ef6\u4e2d\u7684\u547d\u4ee4\uff0c\u5728\u6bcf\u6b21\u6267\u884cshell\u811a\u672c\u65f6\uff0c\u90fd\u4f1a\u91cd\u65b0\u8bfb\u53d6\u8fd9\u4e2a\u6587\u4ef6\uff0c\u6240\u4ee5\u662f\u6700\u5b8c\u6574\u7684\u3002
3\u3001\u4f7f\u7528\u60c5\u51b5\u4e0d\u540c\uff1a\u767b\u5f55shell\u7684\u521d\u59cb\u5316\u6587\u4ef6(\u6bd4\u5982.bash_profile)\u901a\u5e38\u4f1a\u8fd0\u884c\u8fd9\u4e2a\u6587\u4ef6\u3002\u8fd9\u6837\uff0c\u767b\u5f55shell\u548c\u975e\u767b\u5f55shell\u90fd\u53ef\u4ee5\u4f7f\u7528.bashrc\u4e2d\u7684\u547d\u4ee4\u3002
4\u3001\u767b\u9646\u65b9\u5f0f\u4e0d\u540c\uff1a\u767b\u5f55 shell \u9700\u8981\u7528\u6237\u540d\u3001\u5bc6\u7801\u767b\u5f55\u540e\u8fdb\u5165\u7684 shell\uff0c\u6216\u8005\u901a\u8fc7 --login \u9009\u9879\u751f\u6210\u7684 shell \u3002
\u975e\u767b\u5f55 shell \u662f\u6307\u4e0d\u9700\u8981\u8f93\u5165\u7528\u6237\u540d\u548c\u5bc6\u7801\u5373\u53ef\u6253\u5f00\u7684 shell\uff0c\u6bd4\u5982\u8f93\u5165\u547d\u4ee4 bash\u6216\u8005sh \u5c31\u80fd\u8fdb\u5165\u4e00\u4e2a\u5168\u65b0\u7684\u975e\u767b\u5f55 shell\uff0c\u5728 Gnome \u6216 KDE \u4e2d\u6253\u5f00\u4e00\u4e2a \u201cterminal\u201d \u7a97\u53e3\uff0c\u4e5f\u662f\u4e00\u4e2a\u975e\u767b\u5f55 shell\u3002
5\u3001\u6570\u503c\u4e0d\u540c\uff1a
\u67e5\u770b\uff040\u7684\u503c\uff0c\u767b\u5f55shell\u8fd4\u56de\uff0dbash\uff0c\u800c\u975e\u767b\u5f55shell\u8fd4\u56de\u7684\u662fbash\u3002
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\u6269\u5c55\u8d44\u6599\uff1a
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1\u3001\u7528\u6237\u901a\u8fc7\u8f93\u5165\u7528\u6237\u540d\uff0f\u5bc6\u7801\uff08\u6216\u8bc1\u4e66\u8ba4\u8bc1\uff09\u540e\u542f\u52a8\u7684shell\uff1b
2\u3001\u901a\u8fc7\u5e26\u6709\uff0dl\uff5c\uff0d\uff0dlogin\u53c2\u6570\u7684bash\u547d\u4ee4\u542f\u52a8\u7684shell\u3002
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\u800c\u5176\u4ed6\u60c5\u51b5\u542f\u52a8\u7684shell\u57fa\u672c\u4e0a\u5c31\u90fd\u662f\u201c\u975e\u767b\u9646shell\u201d\u4e86\u3002
\u4f8b\u5982\uff0c\u4ece\u56fe\u5f62\u754c\u9762\u542f\u52a8\u7ec8\u7aef\u3001\u4f7f\u7528su\u5207\u6362\u7528\u6237\u3001\u901a\u8fc7bash\u547d\u4ee4\u542f\u52a8bash\u7b49\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u767e\u5ea6\u767e\u79d1-shell
提示符是指的PS1变量吗？
我只知道bash的默认值为“\s-\v\$”（来自man bash），即bash-<版本号>
不过我的系统（RH4）的PS1=[\u@\h \W]\$
其他shell的不知道
/bin/csh
/bin/sh
/usr/bin/es
/usr/bin/ksh
/bin/ksh
/usr/bin/rc
/usr/bin/tcsh
/bin/tcsh
/usr/bin/esh
/bin/bash
/bin/rbash
/bin/ksh93
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