NAME<\/a> xdmshell \u2212 shell for starting xdm on login<\/p>\n \/usr\/bin\/xdmshell<\/b><\/p>\n Xdmshell<\/i><\/b> can be used on systems that are configured to start a console in text mode by default, to allow users to start the X display manager by logging in as a special user with the shell set to the xdmshell program.<\/p>\n Many servers set the keyboard to do non-blocking I\/O under the assumption that they are the only programs attempting to read from the keyboard. Unfortunately, some versions of getty<\/i>(8) will immediately see a continuous stream of zero-length reads which they interpret as end-of-file indicators. Eventually, init<\/i>(8) will disable logins on that line until somebody types the following as root:<\/p>\n On some platforms, one alternative is to disable logins on the console and always run xdm<\/i>(8) from \/etc\/inittab<\/i>.<\/p>\n Another approach is to set up an account whose shell is the xdmshell<\/i> program found in the xdm distribution. This program is not installed by default so that site administrators will examine it to see if it meets their needs. The xdmshell<\/i> utility makes sure that it is being run from the appropriate type of terminal, starts xdm<\/i>, waits for it to finish, and then resets the console if necessary. If the xdm<\/i> resources file (specified by the DisplayManager*resources<\/i> entry in the xdm-config<\/i> file) contains a binding to the abort-display<\/i> action similar to the following<\/p>\n xlogin*login.translations: #override Ctrl the console can then by restored by pressing the indicated key (Control-R in the above example) in the xdm<\/i> login window.<\/p>\n The xdmshell<\/i> program is usually installed setuid to root but executable only by members of a special group, of which the only member is the account which has xdmshell<\/i> as its shell:<\/p>\n % grep xdm \/etc\/passwd If the xdm<\/i> resources have not been configured to have a key bound to the abort-display()<\/i> action, there will be no way for general users to login to the console directly. Whether or not this is desirable depends on the particular site.<\/p>\n X<\/i>(7), xdm<\/i>(8), xinit<\/i>(1)<\/p>\n xdmshell \u2212 shell for starting xdm on login <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[5,52,4,271],"class_list":["post-3125","post","type-post","status-publish","format-standard","hentry","category-8-administracion-del-sistema","tag-5","tag-administracion","tag-man8","tag-xdmshell"],"gutentor_comment":0,"_links":{"self":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/3125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/comments?post=3125"}],"version-history":[{"count":0,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/3125\/revisions"}],"wp:attachment":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/media?parent=3125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/categories?post=3125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/tags?post=3125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
SYNOPSIS<\/a>
DESCRIPTION<\/a>
SEE ALSO<\/a> <\/p>\n
\nNAME <\/a> <\/h2>\n
SYNOPSIS <\/a> <\/h2>\n
DESCRIPTION <\/a> <\/h2>\n
x::101:51:Account for starting up X:\/tmp:\/usr\/bin\/xdmshell
% grep 51 \/etc\/group
xdmgrp:*:51:
% ls -lg \/usr\/bin\/xdmshell
-rws–x— 1 root xdmgrp 20338 Nov 1 01:32 \/usr\/bin\/xdmshell<\/p>\nSEE ALSO <\/a> <\/h2>\n
\n","protected":false},"excerpt":{"rendered":"