General :: Mention List Of Services In The Same File And Still Make The Script Work?
Jan 26, 2010
I have a script from which i want to disable unwanted services. I wanted to have the list of unwanted services in the same script file. I tried the following, but it is not working...How do I mention list of services in the same file and still make the script work ?
Code:
#/bin/bash
#List of services, modify list between SERVICES tag
service_list=$(cat <<SERVICES
acpid
apmd
avahi-daemon
i know that there is already a command for it but it comes out with a lot of letters that makes it hard to find the services that are runningi'm talking about services like DNS, APACHE, DHCP, SAMBA, SSH etcis there a command that will list these services and related services that are running instead of showing a bunch of jumbled and lettered mess thats hard to comprehend
I have a bit of a problem and the only solution I can think of at the moment is a very tedious one, so I was hoping there would be a better way. What I am trying to do is cross compile the PPPD program so that I can install it on an embedded system (this system does not have make/gcc on it). It was easy to cross compile it, but I can not run "make install" since I'm compiling on a secondary machine. I don't want to install PPPD on this secondary machine (I couldn't anyway, because it was compiled for a different architecture) and I can't run make install on the target machine because there is no make/build system for it.
So it seems like what I would have to do is to manually copy over each compiled file from the build machine to the appropriate location of the target machine. And the only way (that I know of) to figure out how to do this is to manually examine the Makefiles (yes, there are several for PPPD) and figure out which file should go where on the target system. This isn't trivial because it uses a hierarchy of makefiles and the probability of human error for this method is high.
Is it possible that I could run another command that would give me a list of all the commands that make install would perform? Or a list of all files and their target location for "make install"? Or possibly some other solution that I am completely unaware of that would make this task not so painful and error prone?
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$ systemctl status ntpd.service ntpd.service - Network Time Service Loaded: loaded (/lib/systemd/system/ntpd.service)
I spent a few minutes googling this, but I am not even sure what to search for. I suspect I'm looking at part of upstart, but it could also be sysvinit, plymouth or something else entirely. Every time I reboot, just between plymouth's splash screen and gdm loading, I am shown a list of services starting. The list shows the names of the services and [OK] if they started sucessfully or [fail] if they did not (only apport ever fails and only occasionally). I don't need or want to see this list. It also interrupts the transition from Grub to GDM (the background color should be the same shade of purple from grub all they way to the desktop, but this list is presented as ordinary terminal output: white text on black background)
On my CentOS 5.4 box I run dns, ssh, and smtp servers. This box also has to be able to resolve and browse websites. So basically it needs iptable rules for
TCP 22 25 80 443 UDP 53
My question is, which of these services work nicely with connection tracking? I'm a little confused about how connection tracking works. For example say this iptables rule for smtp
Code: iptables -A INPUT -s 0/0 --sport 513:65535 -d $myip --dport 25 -j ACCEPT versus
Code: iptables -A INPUT -s 0/0 --sport 513:65535 -d $myip --dport 25 -m state --state NEW,ESTABLISHED -j ACCEPT So with connection tracking what exactly does it do that my first iptables rule does not do?
Also for centos is that port range correct? 2.6 Linux kernel randomly chooses a port 513-65535 when it connects to an external smtp server or say browses a site.
According to security manual only DNS, files, or LDAP should be allowed in nsswitch file however it seems like i have many other services configured in nsswitch files.
below are the content from nsswitch file. What services can be removed considering the system stability.
Code: passwd: files shadow: files group: files hosts: files dns
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I'd like to announce the release of cmus 2.3.0 here. cmus 2.3.0 features gapless MP3 playback, native PulseAudio output plugin (which cures all the problems with PA ALSA emulation present in 2.2.0), very fast metadata cache and much improved compilations handling.
Not to mention tons of bugfixes since 2.2.0, which was released almost 3 years ago.[URL]..
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