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.-e The -e option allows user specification of the escape character, which is the tilde (Ü) by default.This specificationmay be as a literal character, or as an octal value in the form nnnn.-k The -k option requests rlogin to obtain tickets for the remote host in realm realm instead of the remote host srealm as determined by krb_realmofhost(3).-x The -x option turns on DES encryption for all data passed via the rlogin session.This may impact response timeand CPU utilization, but provides increased security.A line of the form disconnects from the remote host.Similarly, the line ÆZ will suspend therlogin session, and suspends the send portion of the rlogin, but allows outputfrom the remote system.By default, the tilde (Ü) character is the escape character, and normally control -Y (ÆY) is thedelayed-suspend character.All echoing takes place at the remote site, so that (except for delays) the rlogin is transparent.Flow control via ÆS/ÆQ andflushing of input and output on interrupts is handled properly. rm461KERBEROS AUTHENTICATIONEach user may have a private authorization list in the file in his or her home directory.Each line in this file should contain aKerberos principal name of the form principal.instance (@realm).If the originating user is authenticated to one of theprincipals named, access is granted to the account.The principal accountname.(@localrealm) is granted access if there isno file.Otherwise, a login and password will be prompted for on the remote machine as in login(1).To avoid certainsecurity problems, the file must be owned by the remote user.If Kerberos authentication fails, a warning message is printed and the standard Berkeley rlogin is used instead.ENVIRONMENTThe following environment variable is utilized by rlogin:TERM Determines the user s terminal typeSEE ALSOrsh(1), kerberos(3), krb_sendauth(3), krb_realmofhost(3)HISTORYThe rlogin command appeared in BSD 4.2.BUGSrlogin will be replaced by telnet(1) in the near future.More of the environment should be propagated.BSD 4.2, 27 July 1991rmrm Remove filesSYNOPSISrm [-dfirvR] [--directory] [--force] [--interactive] [--recursive][--help] [--version] [--verbose] name.DESCRIPTIONThis manual page documents the GNU version of rm.rm removes each specified file.By default, it does not remove directories.If a file is unwritable, the standard input is a tty, and the -f or --force option is not given, rm prompts the user for whetherto remove the file.If the response does not begin with y or Y, the file is skipped.GNU rm, like every program that uses the getopt function to parse its arguments, lets you use the -- option to indicate thatall following arguments are nonoptions.To remove a file called -f in the current directory, you could type eitherrm -- -forrm./-fThe UNIX rm program s use of a single - for this purpose predates the development of the getopt standard syntax.OPTIONS-d, --directory Remove directories with unlink instead of rmdir, and don t require a directory to be empty beforetrying to unlink it.Only works for the superuser.Because unlinking a directory causes any files inthe deleted directory to become unreferenced, it is wise to fsck the filesystem after doing this. Part I: User Commands462-f, --force Ignore nonexistent files and never prompt the user.-i, --interactive Prompt whether to remove each file.If the response does not begin with y or Y, the file is skipped.-r, -R, --recursive Remove the contents of directories recursively.-v, --verbose Print the name of each file before removing it.--help Print a usage message on standard output and exit successfully.--version Print version information on standard output, then exit successfully.GNU File Utilitiesrmdirrmdir Remove empty directoriesSYNOPSISrmdir [-p] [--parents] [--help] [--version] dir.DESCRIPTIONThis manual page documents the GNU version of rmdir.rmdir removes each given empty directory.If any nonoptionargument does not refer to an existing empty directory, it is an error.OPTIONS-p, --parents Remove any parent directories that are explicitly mentioned in an argument, if they become emptyafter the argument file is removed.--help Print a usage message on standard output and exit successfully.--version Print version information on standard output, then exit successfully.GNU File Utilitiesrmmodrmmod Unload loadable modulesSYNOPSISrmmod [ -r ] module.DESCRIPTIONrmmod unloads loadable modules from the kernel.rmmod tries to unload a set of modules from the kernel, with the restriction that they are not in use and that they are notreferred to by other modules.If more than one module is named on the command line, the modules will be removed in the given order.This supportsunloading of stacked modules.With the option -r, a recursive removal of modules will be attempted.This means that if a top module in a stack is namedon the command line, all modules that are used by this module will be removed as well, if possible
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