RHCE 無料問題集「RedHat Red Hat Certified Engineer - RHCE」
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Create a Shared Directory.
Create a shared directory /home/admins, make it has the following characteristics:
/home/admins belongs to group adminuser
This directory can be read and written by members of group adminuser Any files created in /home/ admin, group automatically set as adminuser.
Create a Shared Directory.
Create a shared directory /home/admins, make it has the following characteristics:
/home/admins belongs to group adminuser
This directory can be read and written by members of group adminuser Any files created in /home/ admin, group automatically set as adminuser.
正解：
mkdir/home/adminschgrp-Radminuser/home/adminschmodg+w/home/adminschmodg+s/home/admins
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Configure your web services, download from http://instructor.example.com/pub/serverX.html And the services must be still running after system rebooting.
Configure your web services, download from http://instructor.example.com/pub/serverX.html And the services must be still running after system rebooting.
正解：
cd/var/www/htmlwgethttp://instructor.example.com/pub/serverX.htmlmvserverX.htmlindex.html/etc/init.d/httpdrestartchkconfighttpdon
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Configure the permissions of /var/tmp/fstab
Copy the file /etc/fstab to /var/tmp/fstab. Configure the permissions of /var/tmp/fstab so that:
the file /var/tmp/fstab is owned by the root user.
the file /var/tmp/fstab belongs to the group root.
the file /var/tmp/fstab should not be executable by anyone.
the user natasha is able to read and write /var/tmp/fstab.
the user harry can neither write nor read /var/tmp/fstab.
all other users (current or future) have the ability to read /var/tmp/fstab.
Configure the permissions of /var/tmp/fstab
Copy the file /etc/fstab to /var/tmp/fstab. Configure the permissions of /var/tmp/fstab so that:
the file /var/tmp/fstab is owned by the root user.
the file /var/tmp/fstab belongs to the group root.
the file /var/tmp/fstab should not be executable by anyone.
the user natasha is able to read and write /var/tmp/fstab.
the user harry can neither write nor read /var/tmp/fstab.
all other users (current or future) have the ability to read /var/tmp/fstab.
正解：
cp-a/etc/fstab/var/tmp
cd/var/tmp
ls-l
getfacl/var/tmp/fstab
chmodugo-x/var/tmp/fstab[Noneedtodothistherewon'tbeexecutepermissionforthefilebydefault]
#setfacl-mu:natasha:rw/var/tmp/fstab
#setfacl-mu:harry:0/var/tmp/fstab(zero)[Readpermissionwillbethereforalltheusersbydefault.Checkitusingls-l/var/tmp/fstab]Verifyby[ls-la/var/tmp/fstab]
cd/var/tmp
ls-l
getfacl/var/tmp/fstab
chmodugo-x/var/tmp/fstab[Noneedtodothistherewon'tbeexecutepermissionforthefilebydefault]
#setfacl-mu:natasha:rw/var/tmp/fstab
#setfacl-mu:harry:0/var/tmp/fstab(zero)[Readpermissionwillbethereforalltheusersbydefault.Checkitusingls-l/var/tmp/fstab]Verifyby[ls-la/var/tmp/fstab]
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Install the appropriate kernel update from http://server.domain11.example.com/pub/updates.
The following criteria must also be met:
The updated kernel is the default kernel when the system is rebooted
The original kernel remains available and bootable on the system
Install the appropriate kernel update from http://server.domain11.example.com/pub/updates.
The following criteria must also be met:
The updated kernel is the default kernel when the system is rebooted
The original kernel remains available and bootable on the system
正解：
ftpserver.domain11.example.comAnonymousloginftp>cd/pub/updatesftp>lsftp>mgetkernel*ftp>bye
rpm-ivhkernel*
vim/etc/grub.confChecktheupdattedkernelisthefirstkernelandtheorginalkernelremainsavailable.setdefault=0wq!
rpm-ivhkernel*
vim/etc/grub.confChecktheupdattedkernelisthefirstkernelandtheorginalkernelremainsavailable.setdefault=0wq!
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Update the kernel from ftp://instructor.example.com/pub/updates.
According the following requirements:
The updated kernel must exist as default kernel after rebooting the system.
The original kernel still exists and is available in the system.
Update the kernel from ftp://instructor.example.com/pub/updates.
According the following requirements:
The updated kernel must exist as default kernel after rebooting the system.
The original kernel still exists and is available in the system.
正解：
rpm-ivhkernel-firm...rpm-ivhkernel...
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There are two different networks 192.168.0.0/24 and 192.168.1.0/24. Where 192.168.0.254 and
192.168.1.254 IP Address are assigned on Server. Verify your network settings by pinging 192.168.1.0/24 Network's Host.
There are two different networks 192.168.0.0/24 and 192.168.1.0/24. Where 192.168.0.254 and
192.168.1.254 IP Address are assigned on Server. Verify your network settings by pinging 192.168.1.0/24 Network's Host.
正解：
vi/etc/sysconfing/networkNETWORKING=yesHOSTNAME=station?.example.comGATEWAY=192.168.0.254servicenetworkrestart2.vi/etc/sysconfig/network-scripts/ifcfg-eth0DEVICE=eth0ONBOOT=yesBOOTPROTO=staticIPADDR=X.X.X.XNETMASK=X.X.X.XGATEWAY=192.168.0.254ifdowneth0ifupeth0
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Configure the FTP service in your system, allow remote access to anonymous login and download the program by this service. Service is still running after system rebooting.
Configure the FTP service in your system, allow remote access to anonymous login and download the program by this service. Service is still running after system rebooting.
正解：
yuminstallvsftpd/etc/init.d/vsftpdstartchkconfigvsftpdon
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Add 3 users: harry, natasha, tom.
The requirements: The Additional group of the two users:
harry, Natasha is the admin group.
The user: tom's login shell should be non-interactive.
Add 3 users: harry, natasha, tom.
The requirements: The Additional group of the two users:
harry, Natasha is the admin group.
The user: tom's login shell should be non-interactive.
正解：
#useradd-Gadminharry
#useradd-Gadminnatasha
#useradd-s/sbin/nologintom
#idharry;idNatasha(Showadditionalgroup)
#cat/etc/passwd(Showtheloginshell)OR
#system-config-users
#useradd-Gadminnatasha
#useradd-s/sbin/nologintom
#idharry;idNatasha(Showadditionalgroup)
#cat/etc/passwd(Showtheloginshell)OR
#system-config-users
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Add a new logical partition having size 100MB and create the data which will be the mount point for the new partition.
Add a new logical partition having size 100MB and create the data which will be the mount point for the new partition.
正解：
1.Usefdisk/dev/hda->Tocreatenewpartition.2.Typen->ForNewpartitions3.ItwillaskforLogicalorPrimaryPartitions.Presslforlogical.4.ItwillaskfortheStartingCylinder:UsetheDefaultbypressingEnterKeys5.Typethesize:+100MyoucanspecifyeitherLastcylinderofsizehere.6.PressPtoverifythepartitionslistsandrememberthepartitionsname.7.Presswtowriteonpartitionstable.8.EitherRebootorusepartprobecommand.9.Usemkfs-text3/dev/hda?OR1.mke2fs-j/dev/hda?->Tocreateext3filesystem.2.vi/etc/fstab3.Write:/dev/hda?/dataext3defaults004.Verifybymountingoncurrentsessionsalso:mount/dev/hda?/data
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Add users: user2, user3.
The Additional group of the two users: user2, user3 is the admin group Password: redhat
Add users: user2, user3.
The Additional group of the two users: user2, user3 is the admin group Password: redhat
正解：
#useradd-Gadminuser2
#useradd-Gadminuser3
#passwduser2redhat
#passwduser3redhat
#useradd-Gadminuser3
#passwduser2redhat
#passwduser3redhat