Displaying 20 results from an estimated 6000 matches similar to: "Limit RAM used by a perl script"
2010 Mar 04
4
Permissions problem
What am I doing wrong here? I need to be able to write to /var/cvs.
This used to work before I moved these groups into an LDAP directory
instead of /etc/group:
[scarolan at watcher:/var/cvs]$ touch test.txt
touch: cannot touch `test.txt': Permission denied
[scarolan at watcher:/var/cvs]$ ls -ld
drwxrwsr-x 4 cvs cvsgrp 4096 May 18 2008 .
[scarolan at watcher:/var/cvs]$ id scarolan
2009 Jun 03
4
Good md5sum snapshot tool?
I have a server that is undergoing some patching soon and would like
to make note of any files that have changed after the patching is
complete. Can you recommend a tool that uses md5sum snapshots to do a
quick before and after test, showing anything that's changed on a
particular file system?
2009 May 04
6
Best mobile SSH client?
I'm up for a cell phone contract renewal and am considering upgrading
my handset. I looked at some devices at my local AT&T store but
nothing really jumped out at me. I'm particularly interested in a
cell phone that has a reliable ssh client, with ssh-agent and public
key authentication abilities. Those of you who administer systems
remotely, what mobile ssh client do you recommend?
2011 Mar 03
4
Gnu Screen - terminal issues
I really like gnu screen and use it everyday but there's one thing
that is a bit inconvenient, and that's the odd line wrapping and
terminal size issues that seem to pop up. The problem crops up when I
type or paste a really long command, and then go back and try to edit
it; the text starts to wrap over itself and you have no idea what you
are editing. Any fixes for this?
2008 Jul 15
2
Help with iptables rule for blocking UDP port 53
I would like to block all DNS queries that come from one particular ip
address. I used TCPdump to verify that the queries were in fact,
coming from this IP:
[scarolan at server:~]$ sudo tcpdump -n udp port 53 and src 10.100.1.1
tcpdump: listening on eth0
11:12:17.162100 10.100.1.1.19233 > 10.100.1.61.domain: 14270+ A?
server.domain.com. (32) (DF)
Could someone help with the proper syntax
2011 Jul 20
2
Variable assigned to grep output - missing letter n!
This is kind of odd.
[scarolan at host:~]$ cat loremipsum.txt
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec quis
ipsum sed elit laoreet malesuada. Quisque rhoncus dui vitae eros
euismod fermentum sollicitudin sem scelerisque. Nulla facilisi.
Maecenas mollis pulvinar euismod. Duis viverra pharetra turpis eget
feugiat. Nulla facilisi. Nullam facilisis, felis vitae lacinia
2008 Aug 11
4
df to get total disk usage on all filesystems?
Is there a flag for the df command to get the total disk space used on
all filesystems as one number? I have a server with a lot of mounted
shares. I'm looking for a simple way to measure rate of data growth
across all shares as one total value.
2008 Mar 05
1
Source keychain credentials in Perl?
Keychain is quite a useful tool for automating SSH logins without
having to use password-less keys:
http://www.gentoo.org/proj/en/keychain/
Normally it is used like this to set the SSH_AUTH_SOC and
SSH_AGENT_PID variables:
source ~/.keychain/hostname-sh
(This is what's in hostname-sh)
SSH_AUTH_SOCK=/tmp/ssh-XXn47DUn/agent.16721; export SSH_AUTH_SOCK;
SSH_AGENT_PID=16722; export
2008 Oct 01
2
XDMCP - no GDM login, only gray screen with X
I'm having trouble getting the GDM login screen to show up when I
connect from a remote host. I'm using Xming on the local Windows
machine, but every time I connect to the remote server all I get is a
gray window with the X cursor. I have "Enable=true" in the [xdmcp]
section of /etc/gdm/custom.conf. IPtables is disabled. I've googled
around and read through the xdmcp page
2012 Oct 17
2
Rsync - include only files containing matching string
I have a string, "2012_10_16"; let's call this $YESTERDAY
How can I rsync a file tree from a remote machine to the local one,
including *only* filenames that contain the matching string? I've
read the man page and googled around but can't seem to get the syntax
right. I either end up syncing all the files, or none of them.
Here's how the code looks now (I will remove
2008 Mar 13
3
Good version control package?
We have a directory full of installation and configuration scripts
that are updated on a fairly regular basis. I would like to implement
some sort of version control for these files. I have used SVN and CVS
in the past, but I thought I'd ask if anyone can recommend a simple,
easy-to-use tool that would be better than cvs or subversion for this
fairly simple setup.
2010 Aug 31
4
e2fsck with millions of files
I have a large (1.5TB) partition with millions of files on it. e2fsck has
been running nearly 12 hours and is still on "Checking directory structure".
Any tips for speeding this along?
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2008 Jul 10
3
Iptables not blocking UDP port 53
I'm attempting to block access to port 53 from internet hosts for an
internal server. This device is behind a gateway router so all
traffic appears to come from source ip 10.100.1.1. Here are my
(non-working) iptables rules:
-A RH-Firewall-1-INPUT -s 10.100.1.1 -m tcp -p tcp --dport 53 -j REJECT
-A RH-Firewall-1-INPUT -s 10.100.1.1 -m udp -p udp --dport 53 -j REJECT
Further down the
2011 Mar 07
5
/etc/hosts - hostname alias for 127.0.0.1
Can anyone point out reasons why it might be a bad idea to put this
sort of line in your /etc/hosts file, eg, pointing the FQDN at the
loopback address?
127.0.0.1 hostname.domain.com hostname localhost localhost.localdomain
2009 Apr 21
8
One for the Cisco experts...
I have a Cisco 6509 switch that I'm monitoring with SNMP from a
CentOS5 machine. SNMP polls are the only access I have to this
device, we are not allowed to log on via telnet.
How can I find out which port on the switch a particular server is
connected to? I was hoping that this is somehow possible using the
mac address and the data gathered from snmpwalk/snmpget requests but
I'm not
2008 Jul 09
2
CentOS Patch for http://www.kb.cert.org/vuls/id/800113
Will there be a BIND patch available for this vulnerability, for CentOS 3.9?
http://www.kb.cert.org/vuls/id/800113
2009 Jan 03
2
Bash cgi upload form
Anyone have a function or script for uploading files from a web
browser with a bash script? I know this is possible to do with Perl,
I'm wondering if the same is possible using only bash.
2009 Jan 20
2
Tomcat Monitoring
What do you use for monitoring your Apache Tomcat servers? I have used
jconsole to manually connect and look at the statistics. I'm wondering if
there are any standard tools for watching the health of the java process.
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2008 Oct 24
3
Certain scripts "hang" the terminal on logout
I have an init script that after running, causes my terminal not to
log out cleanly. Here's what i mean:
# /etc/init.d/script restart << this runs fine, returns my shell prompt
# exit << When I enter this command, my shell window just stays
"stuck" and actually won't close down.
Anyone know why this happens?
2008 Sep 18
4
Strange ! characters inserted into emails
I have never encountered anything like this before, so thought I'd post here
and see if anyone can help.
We have a java application that sends out notification emails to end-users.
The body of the email is some boilerplate text and HTML that is pulled from
a database. When the emails are received there are random instances of " !"
(that's a space and a bang symbol) inserted