What version are you using? Use the RHEL tag if your question is about Red Hat Enterprise Linux.

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6 views

How to add new 'From' email id each time sending email using PostFix server

I am new to PostFix and have setup PostFix as a server recently. In the testing, PostFix is working fine and relaying the emails with 'From' email address stored in the PostFix credentials files likes ...
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1answer
14 views

Light way to read big bz2 compressed files

bzcat *.log | sed # etc works but since the files are few gb big, it takes time to complete. Is there a way to do it in a faster way ? I tried echo *.log | xargs -P 4 bzcat | sed # etc but the ...
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0answers
13 views

NoMachine black screen on login (Windows to Red Hat NX connection)

I just downloaded and installed NoMachine for Linux - x86_64 v 4.2.27_1 on my Red Hat Server (Red Hat Enterprise Linux 7.0 (HVM) , x64), and downloaded the Windows Client NoMachine for Windows v ...
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1answer
10 views

How do I get 64-bit binutils in Redhat 7

How do I check whether I have 32 or 64-bit binutils, and get 64-bit binutils, in RHEL 7 (my nm reports nm: supported targets: elf32-i386 a.out-i386-linux srec symbolsrec tekhex binary ihex trad-core ...
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0answers
3 views

How to install a dummy package without mk-build-deps?

I'm trying to install the latest version of mpv on Fedora. I can't figure out how to follow the step in the link (create a dummy package that depends on the required packages) without mk-build-deps ...
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0answers
19 views

How to track a file from NFS in Linux is being locked?

I've some codes on a NFS which is shared with two load balancer servers. Sometimes the waiting time of a request is getting longer and I suspect the files may be getting locked with a request while ...
0
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1answer
15 views

redhat, multipath on cluster node display different result

I've a cluster with two nodes installed with "RedHat Entreprise Linux Server 5.6" If I execute "multipath -ll" on them, I do not get the same result. I've checked within "multipathd -k" with "show ...
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1answer
5 views

Variable substitution in tcsh

Need your help. I've gone through the manual for the tch but still can't figure out how it should work in my case or whether it should work at all. I basically need to extract part of the variable ...
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0answers
36 views

Remove grep's line number output in Redhat 5.9

I havent used RH 5.9 until now. I started with 6 but we have some 5.9 servers. The syntax with 5.9 is a bit different with some things. grep for example will output a number line before the actual ...
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0answers
26 views

Redhat user account password expiring after 15 days instead of 30

My user account on a Redhat 5.10 box is set to have my password be changed every 30 days however, it forces me to change the password every 15 days instead. I have confirmed the setting by doing ...
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1answer
26 views

Redhat 6.5 - lockout user after 3 failed login attempts

There are a few guides online, none which have worked. I think I need yo modify password-auth, but I'm not sure how.
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0answers
34 views

Unable to delete a file 'Operation Not Permitted'

Got a problem with a Linux box where I'm trying to delete a file but it won't let me. Anything I try to do on this file (chmod, chown, rm, mv etc.) end up with the same error. I have noticed that ...
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1answer
30 views

How to permanently disable firewall in Red Hat Linux

I have followed the below steps to disable the firewall in Linux. After reboot, again firewall is enabled. How to disable firewall permanently? Login as the root user. Next enter the following three ...
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2answers
50 views

what can be the reason for no permission even using root or sudo

When root or using sudo, I cannot write to some files. I have a file fileA with permissions 750 fileA rwxr_x___ root root When I run a program as root or using sudo, the system prompt is: no ...
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3answers
31 views

Limit the size of tmpdir

I need to limit the disk usage of MySQL tmpdir so it does not "eat" all available disk space. There are around 30G available but i have seen mysqld using all of it to create a temp table. My first ...
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0answers
35 views

how to delete yum and right re-install to centos6.5?

[root@webdev docs]# yum list Gathering header information file(s) from server(s) Server: Red Hat Linux 6 - x86_64 - Base retrygrab() failed for: ...
1
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1answer
64 views

Why does GPG Encrypt/Decrypt fail between different versions of GnuPG?

I have 2 servers that will be passing data between them, one is Ubuntu and the other is Red Hat. Using the already installed versions on each, Ubuntu is 12.04 with gnuPG 1.4.x and Red Hat is ...
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0answers
17 views

Issues configuring IPv6 on Red Hat 5.8

I'm new at linux and i'm trying to configure IPv6 on a Red Hat 5.8 due a specific application I'm working on. This Linux is installed in a VMWare 8 and the IPv4 is working fine! I can ping the host ...
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0answers
12 views

Red Hat-Like Startup for Debian (ok symbol)?

One thing I kind of liked about the old Red Hat startup (I was using version 9) is the way it shows every process during startup with an [OK] symbol on the right (or [Failed] if it did not work), ...
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1answer
38 views

Failed to Start DHCP in Linux Redhat, Need Help ASAP

I tried to configure /etc/dhcp/dhcpd.conf file in Linux but it failed as static addressing. How do I fix it? Am I missing any data and is it accurate? I need help. Below is screenshot of my contents ...
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0answers
40 views

Installing gdal/postgis has dependency

I am trying to install gdal/postgis2_92 but I get following dependency issue: Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis) Requires: libz.so.1(ZLIB_1.2.0)(64bit) Error: Package: ...
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2answers
58 views

Download self-signed server certicate

Summary I need to download a self-signed certificate from a server, to create a .JKS-file to use as truststore in an application. How can I do that from a Red Hat server? What I have tried I have ...
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0answers
22 views

declare -A on RHEL 5

I am using an associative array on my RHEL 6 servers and I just tested the script on a RHEL 5 server and apparently -A is not supported for the declare command on RHEL 5: declare -A var -bash: ...
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1answer
20 views

Extracting part of a large SQL dump

Is there a way to chain commands like grep and head together to extract a portion of a file? The problem is that somewhere in my .sql file I have an old data that I need to compare to new data and I ...
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5answers
2k views

Sudo vs root; any actual differences?

I'm working with a support member for a product, and he insists that I need to be root to install a series of patches, and that sudo won't work; he doesn't provide a reason but seems very firm in his ...
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9 views

Tracking daemon restart

I have a daemon that seems to restart itself at irregular intervals. Behavior is consistent with doing kill -9 and then starting it again. Since system is pretty much open pretty much anybody might ...
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1answer
102 views

mysqli extension is missing in phpMyAdmin on RedHat 5.9 Server

We have installed Apache, PHP, MySQL, and attempted to install phpMyAdmin. When going to phpMyAdmin in the browser, we are presented with "The mbstring extension is missing." We are unable to get ...
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0answers
29 views

how to use “script” command automatically in Linux

How to run the script command in redhat automatically at the time of login and stop at the time of logout?
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4 views

Gedit: can search results be put into a list?

Is it possible to run a search on a file with gedit and have each line where there is a hit displayed "below" somewhere in a list?
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1answer
60 views

Redhat linux terminal garbage output when using telnet

I am using redhat-linux terminal to connect to a router device by means of 'telnet'. While the device boots, the characters are getting printed in garbage manner which is as follows, In terminal, ...
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0answers
13 views

Building rtmpdump on RHEL x86 without yum and no root rights

I have an ssh connection to a RHEL x86 machine, and I can't use yum and I don't have root rights. Is there a way to install rtmpdump anyhow? By looking at this tutorial, it seems that installing ...
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0answers
37 views

How can I verify on download that a site's SSL cert is for a host I trust?

Generally I want to be able to make an HTTPS connection to a site, and while negotiating the SSL check that: The cert is in every way valid for the host listed on the cert (unexpired, signed by ...
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1answer
36 views

Deploy PAM system-auth file from Configuration Server (Spacewalk)

I have my pam.d system-auth file set up correctly on a laptop to set password complexity requirements. If the contents of the file are copied directly into the /etc/pam.d/system-auth location (or the ...
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2answers
53 views

I accidentally moved my /lib64. How do I fix this?

For some stupid reason, I thought it was a good idea to do sudo mv /lib64 /old_lib64. Now I can't do ANYTHING (not opening files, not starting new terminals, not even ls). The only thing I can do now ...
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1answer
39 views

List all enabled services for both Redhat and Debian

Is there a trick to display a list of enabled services in both Redhat and Debian distro ? I need a generic command which can be used for both distribution and with the same output result. Thanks
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32 views

how to connect server in VM from windows

I have installed Red Hat Server 6.4 in VirtualBox and I also installed Java. I wrote a socket program (port 13 , ip = x.x.x.x). Then in Command prompt, I execute telnet x.x.x.x 13 But it doesn't ...
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0answers
58 views

samba share guest ability to write to all files/folders, old and new

I currently have a samba share set up on RHEL, that allows any user to write to the root folder. I'm unable to write to the sub folders/files. I have run; chcon -R -t samba_share_t ...
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0answers
209 views

kernel panic: VFS: Unable to mount root fs on 03:02

I'm studying kernel compilation for my operating systems course. Unfortunately I'm compiling Linux v2.4.20 and Red Hat 9(yes, they're making us use it and it drives me crazy but I've NO CHOICE ...
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0answers
18 views

OpenVPN access server on Red Hat on Parallel on Mac Mini server

installed Red Hat on parallel on Mac Mini server to use Red Hat as a personal OpenVPN installed the OpenVPN access server than used terminal for setup but every time i get internal ip not the ...
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1answer
101 views

email command not working in UNIX Linux

I tried with 2 email UNIX commands mail and mutt from my Red Hat Linux box. It's not sending any mails to the email id I specified. echo "My message" | mail -s subject "test email" <my valid ...
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0answers
32 views

Missing CDROM from /dev redhat (oracle linux) 6.2

we have installed the minimal install for redhat 6.2 (OL 6.2) on a HP Proliant 380 G8 and there is no CDROM, SDB or DVD listed in /dev. If I do dmesg | more, I cannot find any reference to it ...
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0answers
25 views

Is there a way to make a desktop session recording using RHEL/CentOS 6 Base or Extras packages only?

I have access only to the Base and Extras packages and am trying to make a screencast on CentOS 6.5. All of the packages that I have used in the past (istanbul, recordmydesktop) are unavailable to ...
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1answer
148 views

Redhat linux terminal profile location

I am using VNC to connect to a remote machine where I used to set preferences for the terminal like my own keyboard shortcuts. Can anybody tell me where these profile configuration is getting saved ...
0
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1answer
30 views

Automatic OS installation Image?Kickstart?

I have a few HP boxes in the data warehouse that I got the iLO (lights out) level access. What I have done: (1) I just installed CentOS which kernel 2.6.32-431.el6.x86_64 using virtual media, it is ...
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1answer
132 views

Redhat Enterprise Linux 5.9: Yum Updates Not Working: TypeError 'NoneType'

We have a RHEL 5.9 which is refusing to apply updates. For example, if I do a command like: yum update then I get an error like in this thread: https://bugzilla.redhat.com/show_bug.cgi?id=824663 [I ...
0
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1answer
144 views

Get “timeout” command from GNU coreutils 8 on RHEL 5.7 machine

What is the best way to install the Gnu timeout command on an RHEL 5.7 machine? I would prefer to install with yum, but I can compile from source if that is the only way. timeout was introduced in ...
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0answers
34 views

Not Getting standard boot countdown screen in Dualboot (Linux 6.2 & Windows 8)

I have installed (Dual Booted) Red Hat 6.2 on a Windows machine. In Windows Boot Manager it is not showing Linux, it only shows Windows 8. I am pressing arrow keys but only Windows 8 shows up. How ...
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0answers
24 views

how connect to wifi on red hat 5?

Could someone advise me how to connect to wifi in Red Hat 5 on WMware? I tried to setup SSid and key in System - Administration - Network - Wireless Connection. But then I open browser - there is no ...
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0answers
5 views

“unable to access the cdrom” while install red had on WMware

I want install Linux RedHat in WMware, I have 5 iso files. Begin installation, and after a while got message to set second iso file. I have choosen second iso file in setting of CD/DVD and press Ok in ...
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0answers
7 views

Red Hat Enterprise WS Version 3 on Dell M4300

I am trying to a dual boot on Dell M4300 but the Red Hat installation process does not recognize the hard drive. I have looked around a bit and so far I found that since I have a very old version of ...