Red Hat Enterprise Linux (RHEL) is a commercially supported Linux distribution.
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2answers
384 views
Are there programs that work for Red Hat but not Ubuntu?
And vice versa? What about other distributions too?
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5answers
308 views
Does verifying packages enhance security and/or stability of a system?
RedHat/CentOS and Ubuntu both provide packages to verify the contents of a package. CentOS uses rpm -V. Ubuntu uses debsums.
I've spoken to admins who run these tools to verify the packages on their ...
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3answers
148 views
Is Red Hat Linux licensed
Am confused so thought of asking a question.
According to this Red Hat Becomes Open Source’s First $1 Billion Baby, it is opensourced so my question is:
Where can I download the Opensource version ...
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2answers
12 views
Installing Minor Software Updates
On an existing Red Hat Enterprise Linux server, I need to perform software upgrades on Java, Apache and Samba.
I need to install minor updates for each of the above software.
How can I figure out ...
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2answers
180 views
Synchronize the files from One folder of a Server to other
I need a script in which Files of One server will be copied to other folder of another server ONLY AND ONLY IF the file on SOURCE SERVER file doesn't exist on DESTINATION SERVER.
Further Detail
...
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2answers
58 views
How to list RPM packages installed in order of installation date
I'd like to see a list of software installed in the order of the date they were installed. The order doesn't matter (newest to oldest & vice-versa) as long as they're arranged by date.
I'm mainly ...
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1answer
106 views
Is rpm the only file extension for repositories
I've noticed that repositories in CentOS have the .rpm extension.
Are there other extensions?
Is .rpm specific to the operating system? i.e. do other linux operating systems have other extensions?
...
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2answers
802 views
Can I mount NTFS flash drive on linux
Hi I'm using RHEL 6 an WIN 7. I have a flash drive of 16GB. To copy the files which are above 4GB size I changed it to NTFS(FAT32 is allowing only file size below 4GB). But now I am not able to use in ...
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2answers
8k views
pdksh missing from RHEL 6 and CentOS 6?
The package pdksh does not exist on RHEL 6 or CentOS 6 when I try to install it through yum.
So my questions:
Why is it no longer available in the default repositories? It is available in version ...
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2answers
258 views
How to Extend LVM in Redhat 5.6
I need to Extend the LVM on one server. This is the df -h result.
Filesystem Size Used Avail Use% Mounted on
/dev/cciss/c0d0p2 58G 26G 29G 48% /
/dev/mapper/VolGroup00-LogVol00
...
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3answers
202 views
How do I check if a distribution is Fedora-based?
The Python M2Crypto library requires a slightly different installation command if the Linux distribution is Fedora-core based (e.g., Fedora, RHEL, CentOS, Scientific Linux).
Is there a way to check ...
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2answers
907 views
How to hibernate a RHEL6 machine?
I am using RHEL6 and I don't see a hibernate option for it. Doesn't RHEL6 have a hibernate option?
I tried pm-hibernate from command line but it said:
PM: Cannot find swap device, try swapon -a
...
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1answer
6k views
doing OpenLDAP config changes in RHEL 6
I've been configuring OpenLDAP on RHEL 6 and its seems you have run the following to rebuild the config dirs. I'm ok with that, but my issues is, say I want to change the server passwd, do I have to ...
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2answers
1k views
Listing packages in Yum that depend on another installed package
I am trying to install a 3rd-party RPM package on RHEL5 which depends on version 3.4 of sqlite. According to Yum I already have 3.3.6 installed.
Is there a way to list the installed packages that ...
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3answers
45 views
execute file in server more safely?
We have a application which takes a C++, C, or Java file as input, executes it, and displays the output to the client. What are the best measures that can be taken so that no security related issues ...
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3answers
102 views
open a already running process
I have 64-bit RHEL 2.6.18-238.el5 running. I access the machine through vpn. I started an application via terminal and while application was running there was disconnection in vpn which closed my ...
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1answer
230 views
Is there a way to install and remove packages in a single yum command?
Is there a way to add and remove packages at the same time with a single yum command? For example, installing postfix and removing sendmail without running two separate commands/transactions.
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1answer
1k views
What starts the login prompt in RHEL?
I don't have a service in my run level that starts the login prompt, so I was wondering what does.
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3answers
106 views
How to clean up my desktop?
Now, I see that my desktop running rhel 5.6 has run out of space. Now I need to clean it up. There must be some unintentional files adding up. What I would like to be able to do is list the files in ...
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1answer
2k views
Can't explain “crash” entries in output of the 'last' command
Last shows "crash" at 12:02 and 14:18, but the system didn't stop working at that time. The reboot at 15:03, on the other hand, was to recover from an actual crash - our system stopped responding at ...
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1answer
305 views
Add files to an iso image and auto run a script post installation
I'd like to add a tar archive in the standard Red Hat installation CD image and untar the same at a desired location using some post install scripts.
Can you kindly suggest me how to proceed? In ...
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1answer
196 views
What is rsh.rlogin and How to remove rsh.rlogin
I never heard of this word rsh and also received a check list from Security pro that we have to disable rsh.
Can someone please tell me what is this rsh and how to disable it.
Base OS : RHEL 5.5 and ...
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2answers
87 views
How to view Graphical view of Application using ssh [duplicate]
Possible Duplicate:
How to forward X over SSH from Ubuntu machine?
Is it possible that I can view the GUI of application when I pass some command to Redhat linux Server using ssh. Like when ...
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2answers
183 views
Is there a way to view the console output instead of boot logo, while my RHEL 6.2 machine boots up?
My company provided laptop has RHEL6.2, with lot of programs to start up automatically, which makes the boot up process slow.
While the machine boots up, there is the boring RHEL logo on the screen ...
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1answer
277 views
How to force a particular version of Java?
I am on a RHEL 5.5 64 bit box. The systems engineer installed the 64-bit Java VM under /usr/bin ; however, I needed a 32 bit VM which he installed in /opt/jdk1.6.0_35. But now, everytime I do java ...
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1answer
1k views
Hotplug area too small error
I have VM running under RHEL6, which is running under HyperV. It has a lot of important soft installed, but does not have suffocating workload (~10% CPU is used). It's been really unstable recently ...
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2answers
1k views
Fix fstab to prevent boot failure
How can I fix fstab to prevent boot failure?
It seems that I have added incorrect record to /etc/fstab:
//servername/share /mnt/share cifs defaults,username=myuser 0 0
When I did ...
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2answers
2k views
How to install/remove/upgrade .rpm packages on Red Hat?
I am new to linux, and at the university we are using this distribution to mount servers on VM, but I need to install a package that is missing in my virtual machine that is running Red Hat, but how ...
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1answer
181 views
I changed my hostname, rebooted and lost internet connection
I set a new hostname on my machine using:
sudo hostname NEWHOSTNAME
Then I restarted, and tried accessing the internet and nothing happened. I checked the hostname and it was set to ...
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1answer
1k views
How to enable dual booting option at boot screen?
I have two hard drives, 160GB and 500GB. On the 160GB I have installed RHEL 6 and on the 500GB, Windows 7. When I start, the hard drive which is set as primary is booting directly. I have set the ...
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2answers
2k views
Partitioning for Web Servers
I was curious what some general best practices are in relation to partitioning for a new Linux VM that will be used as a web server? Are there certain guides that should be consulted or followed? ...
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3answers
570 views
SFTP server on RHEL6 disconnects on ls
I've followed the steps outlined here to create a chrooted sftp environment. Everything works great EXCEPT for the command ls. When I do an ls, with any of the flags, I get disconnected ...
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1answer
166 views
Checking & Installing files in yum
I'm a beginner picking up RHEL...
To check if some packages are present , i will type :
yum check <packages_name>
And then install by typing
yum install <packages_name>
Is there a ...
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1answer
956 views
Is there a way to find out if a network outage occurred from logs?
I have a red hat server running an oracle database.
I can see in oracles rdbms' alert logs that a network outage of some sort occurred.
ORA-16198: Timeout incurred on internal channel during remote ...
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2answers
7k views
Red Hat Enterprise Linux 6: /boot/grub/menu.lst or /boot/grub/grub.conf?
I have a brand new Scientific Linux 6 system, but this same question should apply to CentOS 6, RHEL6 or any RHEL6-derivative.
I see that /boot/grub contains a menu.lst as well as a grub.conf file. ...
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2answers
71 views
How to make RHEL 6 to boot in Text-mode?
I am using RHEL 6.4 on a HP-Z620 Workstation.Whenever this machine starts up, it comes up with Graphics Mode e.g. Splash Screen,Red Hat Logo etc.
But I want my machine to start in Text Mode.
e.g. I ...
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1answer
58 views
How do I edit configuration variables returned by getconf?
Specifically, I would like to edit the value of the system configuration variable ARG_MAX. (It is preset on kernels before 2.6.23 and I want to increase it.)
How do I do this? Does this require ...
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2answers
78 views
.exrc file in home dir not effective
I made a simple .exrc vim config file in my home directory on RHEL 5.8. Here are the contents:
set nu
However, when I go into vim, the line number are not shown. It may be worth noting that I am ...
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1answer
54 views
What is the 'pam-panel-icon' window?
After starting GNOME desktop, a window titled 'pam-panel-icon' appears, initially displayed in the upper-left of the desktop sized as small as possible. It can be resized, minimized, or maximized, ...
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1answer
168 views
Need help to configure my NIC in Redhat
I am trying to set a larger buffer size in my NIC card. I am following the instruction provide by Intel link, but i think it didn't made any changes.
[root@redhat-enterprise-test01 admin]# rmmod ...
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2answers
325 views
How to check how many External Hard Drives are connected to Linux Server
Is there a way to distinguish between the Internal Hard drives and External Hard drives.
Actually i need to see how many External hardrives do we have and to which server are they connected .
This ...
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1answer
298 views
Need to change the mount Point of LVM /u001/app/oracle to /u001/
This is the situation.I installed the RHEL 5.5 on client's system and created LVM mount point at /u001/app/oracle and now he has installed DB on /u001/app/oracle. He is asked me to change the mount ...
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1answer
218 views
How to clear memory cache in Linux
Is there any command that by using I can clean the cache in RHEL
I used this command
sync; echo 3 > /proc/sys/vm/drop_caches
but it didn't work
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2answers
92 views
Missing float function in awk on RHEL 5.8
Why is float missing in awk on my RHEL 5.8? Was it replaced by some other function?
On Solaris:
echo "Foampile=123" | awk -F"=" '{ print float($2) "<->" $1 }'
returns
123<->Foampile
...
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1answer
55 views
ServeRAID error in syslog, is it important?
I was checking the logs in server when i came across this message.
Nov 4 12:52:05 SERVERNAME ServeRAID Manager Agent: [338] Periodic scan
found one or more critical logical drives: controller 1. ...
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2answers
396 views
Do mpstat and iostat come standard with Linux RHEL 5.8?
Do command line utilities like mpstat and iostat come standard with the RHEL 5.8 machine? Or are they optional utilities which the user has to install manually, if required?
I could find these ...
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1answer
176 views
How to share files Between RHEL and Ubuntu
I have installed RHEL 5.5 on VIrtual Box and Host system is Ubuntu 12.04. I can access the files of Ubuntu by using the sharing services of Virtual Box.
But how can I access the files of RHEL which ...
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1answer
129 views
Unable to connect to serial device; no /dev/ttySx
I wrote a Java application that connects to the serial port of the GSM modem. On Windows the serial ports have names like COM3, but in Linux Redhat 6.0 I had to switch to something like ttySx (X is ...
1
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1answer
128 views
Map caps to esc for RHEL 5?
I have an older version of RHEL. In newer versions, there is usually an option to map the caps key to the esc key. How would I do this in an old version?
Going to System Preferences -> Keyboard -> ...
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2answers
440 views
Red Hat Error Class Code: 49 When Attempting To Install Package
I am a Unix noob. I am currently working on a virtual machine that is running Red Hat 4.1.2-41. When I attempt to install a software package, I get the following error:
...
