Questions tagged [linux]
Linux is the generic term for a UNIX-like open source operating system based on the Linux kernel.
38,558
questions
0
votes
3
answers
128
views
Need Apache/Tomcat help
Ok, so in an effort to keep things running smoothly, this weekend our company restarted the Linux server our Internet site was running on. Come Monday morning, we can't get to the site. I can ping ...
XstreamINsanity
0
votes
3
answers
155
views
Hot linking images
Not sure if this is the right stackexchange site to post this question, but I wanted to know if it is possible to get a list of all websites which are hot linking to images on my website, and how to ...
- 292
0
votes
3
answers
760
views
Queue based shell in linux?
I would like to control users programs execution based on server load.
Each user uses bash. Are there way to make a some kind of queue where execution for the commands from command line will be pended ...
- 595
0
votes
3
answers
1k
views
Connecting Linux system to switch from 2 interfaces
To get proper redundancy, we've installed 2 switches in our network and connected them to eachother. We now want to hook our servers to both switches. Since all servers have 2 ethernet ports, this ...
user53806
0
votes
3
answers
6k
views
Linux server stopped responding
One of our RedHat Linux server simply stopped responding for a few minutes. For that period of a few minutes there is absolutely no entry in the log files (under /var/log/ - messages etc) or ...
- 197
0
votes
4
answers
2k
views
Can you recommend a good GUI (X, Java, web-based, or curses-like console) for syslog and other Linux logs?
I am looking for a convenient tool to view and manage my Linux (Debian, postfix, dovecot, iptables, etc) server logs. Would you, please, share your choice and experience?
- 3,398
0
votes
3
answers
596
views
Is this hacking attempt?
on command netstat -na, between others, i'm getting next line:
tcp 0 0 XXX.XXX.XXX.XXX:48746 YYY.YYY.YYY.YYY:80 TIME_WAIT
is this some kind of hacking attempt? can you give ...
- 863
0
votes
3
answers
6k
views
Remote logging with Syslogd, can I change the hostname?
I am running ddwrt v24-sp2 on three WRT54GL routers. These routers all send their syslog information to the same remote server using syslogd
The problem is that in the logs the hostname will change ...
- 358
0
votes
3
answers
3k
views
How do you block /etc/passwd file
How do I block the /etc/passwd file for all users except for root?
user44306
0
votes
2
answers
846
views
Why doesn't this cron work?
I do "crontab -e" and add the following line:
0 9 * * * /usr/bin/python /home/g1/g1/utils/statsEmail.py > /home/g1/log/statsemail.log
But it doesn't work! Why? The script itself ...
- 8,591
0
votes
3
answers
139
views
What could I leave running on a linux server locally when all access is remote?
I'va remote linux debian server that 99.9% of the time I access via ssh remotely. However I was aware that the local terminal is sitting there with a logon prompt. Is there anything I could change ...
- 121
0
votes
1
answer
690
views
Creating a filesystem on a file in linux for software development purposes
This question originally start at Superuser.com
https://superuser.com/questions/130032/available-filesystems-for-linux-that-are-case-insensitive
Summary: My client has a PHP web application that ...
- 419
0
votes
5
answers
8k
views
Syntax error near unexpected token 'fi'
I have created a very simple script (see below) but cannot get it to run properly. I always get messages saying
line 5: syntax error near unexpected token 'fi'
line 5: 'fi'
when I try to execute ...
Bill Sherwin
0
votes
1
answer
173
views
Where is the "right" place to copy applications and scripts so they are accessible to every user on ubuntu?
I'm configuring a build machine using Ubuntu 9.10 Desktop as the platform. The first user and of course admin is "developer", and then I created lots of user accounts so people could access shares ...
- 677
0
votes
2
answers
284
views
DNSBL Server - Linux Distribution Recommendations? [closed]
I'm preparing to build a publicly accessible DNSBL server. Which Linux distribution would you recommend for something like this?
I'm mainly interested in:
General security
Stability
Resource ...
- 12k
0
votes
2
answers
7k
views
Is there a way to get a list of computers on a linux only network?
On windows networks, I'm used to browse my workgroup using "view workgroup computers".
Now I'm on a linux only network. I now I can use samba and just do the same, but is there a way to achieve the ...
Moi42
0
votes
5
answers
1k
views
how to locate linux machine by hostname not ip address
I just got a SheevaPlug and installed subversion on it. It gets its IP address using DHCP so it can change from time to time. I would like to be able to connect (from Windows XP and Windows 7 machines)...
- 111
0
votes
4
answers
320
views
Linux Directory Server with existing local accounts
I've got about 50 servers running a mix of RHEL and CentOS, and they all use local authentication. We are about to get these finally under a single unit's control, and we have a slew of local ...
- 1,540
0
votes
2
answers
220
views
Can I copy id_dsa keys?
I generated id_dsa key (ssh key) for my client, and then copied them over to authorized_keys.
And it works.
Is it possible to copy these Keys to another user account, so I don't have to re-create ...
- 8,591
0
votes
2
answers
388
views
sed on not-owned file
is it possible, to change a file in /etc with sed -i that I am not the owner of? However, I do have write permissions to that file.
Or as an alternative, how do I change a line in a file in /etc ...
- 103
0
votes
3
answers
244
views
Should I switch my server to Ubuntu Server from Windows Server 2003
I have a server thats primarily used for SRCDS, I host a few Team Fortress 2 servers on it and I would much prefer a ssh-like (more so the no-gui part) for something like this, mostly because I can't ...
0
votes
2
answers
170
views
copying a file 2 connections away?
I dislike calling scp twice.
I need to connect to box1 via ssh the again to boxNAME. How do i copy a file from boxNAME to my local drive? also how do i copy a file from my local drive back to boxNAME?...
user274
0
votes
4
answers
345
views
Hard drive reliability when constantly handling lots of reads/writes/deletes
In addition to storing lots of photos, my web application has the need to constantly read, write, and delete a lot of temporary files which it uses for various functionality. Some of these temp files ...
- 137
0
votes
8
answers
10k
views
Best commands to use to find out the total CPU and memory usage of a Linux machine in the following situation
These are pretty much questions from a newbie. (I have looked at the other related questions and answers, but none seemed to be exactly answering my own original questions.)
I need to remotely ...
- 249
0
votes
5
answers
253
views
Best hardware (MB/graphic) for Linux
I am planning to build a new computer on which I will run Ubuntu Linux.
Now, which motherboard and which graphic card has the best support for Linux?
I have a NVidia MB which you can get to work in ...
- 238
0
votes
7
answers
6k
views
Configure Wi-Fi adapters in Linux [closed]
Linux distributions these days come with NetworkManager to allow a user to configure a WiFi network adapter. However I can't seem to figure out how to configure a system-wide network adapter. There ...
0
votes
1
answer
447
views
Any security reason not to use `root` user for git remote operations?
I've got some configs (docker-compose related files) which I like to store them via git on a private github repo.
The configs are owned by root.
Is there any reason to change the ownership of the ...
- 103
0
votes
1
answer
416
views
DKIM Record Not Working
I was setup SPF, DKIM and DMARC Record for my mail server,
SPF and DMARC Record are working normally now,
But i got a problem for my DKIM Record,
When i do: dig default._domainkey.example.com txt
The ...
0
votes
3
answers
5k
views
Why GCP overrides my /etc/resolv.conf file and how to avoid it?
On Google Cloud Platform /etc/resolv.conf file being overridden every time I do sudo systemctl restart NetworkManager.service or I restart the machine.
Is there a "correct" way to avoid it? ...
google-cloud-platform
0
votes
2
answers
291
views
Why use ufw if the ports are closed by default
My question is why use a firewall like ufw if most of the ports are closed by default and the open ones are mean to be accessed.
- 297
0
votes
3
answers
339
views
What determines the user a services started
I thought, that the service files under /lib/systemd/system/ determine as what user a service is started.
But apparently that's not (always) the case.
Here's an example:
~# ps faux
...
whoopsie 1445 ...
- 35
0
votes
2
answers
2k
views
How do I cut just the file name from from ls -l output? [closed]
I am in the process of concatenating ogg audio files in bulk with the help of ffmpeg using a mylist.txt file
The format of the mylist.txt file is
file '/path/to/file1.wav'
file '/path/to/file2.wav'
...
- 155
0
votes
3
answers
143
views
In linux, Can a filesystem get full even though the volume is not full? [closed]
In linux, Can a filesystem get full even though the volume is not full, how do we differentiate filesystem and volume in terms of storage space ?
- 33
0
votes
1
answer
437
views
Use shell if defined in LDAP, otherwise default
How should /etc/sssd/sssd.conf file be configured to use the shell defined in LDAP and the default one if the variable is not defined in LDAP?
- 103
0
votes
2
answers
210
views
One domain for multiple Linux Servers
I apologize in advance if the question I'll be asking is basic or anything but I am quite a newbie on this topic.
I have a main domain example.com which is used for the apache web server. Now I have ...
- 3
0
votes
3
answers
813
views
Is there a way to find hidden options and arguments on for a command / package that isnt documented?
On Linux if I install a new package and it contains commands I haven't used before, is there a way to find hidden options and args that are not documented in the MAN page or with the --help option.
...
- 99
0
votes
3
answers
2k
views
Is it safe to stop a Jboss EAP server with Kill -9?
We are having an internal debate about this. Running jboss eap 7 on RHEL.
We currently have a script to stop the server by simply running kill -9 on the java process.
My suggestion was to use the ...
- 135
0
votes
1
answer
886
views
How to guarantee CPU time for VPS?
I offered VPS and with virgin Debian it often hangs: simple ssh command responds too long. It is bad :(
I made benchmark for it: every 2 minutes it starts ffmpeg to convert 30 seconds low quality ...
- 598
0
votes
3
answers
800
views
why must I use sometimes screen -rx and not screen -r?
Sometimes to get access to screen console I need to user screen -rx and not just screen -r.
Any idea why and why this happens ?
- 847
0
votes
3
answers
3k
views
zfs remove device from pool
Before you read the title and roll your eyes, I've already read all of the various answers, posts, and articles that say you can't shrink a pool once you've made it. However, I saw this post which ...
- 31
0
votes
1
answer
2k
views
Linux configuration of net.ipv4.tcp_rmem
I'm trying to create a script with this command:
sysctl -w net.ipv4.tcp_rmem=65536 87380 16777216
However, I get this error:
net.ipv4.tcp_wmem = 65536
error: "65536" must be of the ...
0
votes
1
answer
655
views
How I can parse email to get original recipient of an email? [closed]
I had email source with me and want parse original recipient of email.
Lets say "[email protected]" is receiving a email, but in "To" list [email protected], [email protected] & [email protected] ...
- 121
0
votes
2
answers
1k
views
How can I redirect logfile output to a network socket?
I am using a commercial Java app which writes it's logfiles using log4j. I'd like to get those logfile entries into Syslog where we have specific filters setup to trigger on system events.
Log4j ...
- 3,784
0
votes
1
answer
986
views
Why is my shell command not working?
I have a shell script that I'm working on that uses pssh to get the user id of a user on a remote server:
for USER in $(cat users.txt); do
runuser -l mike -c 'pssh -H server.mike.com -o /home/...
- 321
0
votes
1
answer
2k
views
How to increase inodes limit in ReiserFS filesystem?
Is it possible to increase inode limit in ReiserFS without formatting the partition?
Currently, the filesystem on my VPS allows me to create 489K inodes, which is not enough. The machine works as ...
0
votes
1
answer
163
views
Local "incoming" dir
I need to create a directory on a Linux server where users can "submit" files, similar to the incoming directory on an ftp server. (Where they would not be viewable after submission.)
Specifically, ...
- 101
0
votes
1
answer
3k
views
How to set UTF-8 charset in exim4?
Using Ubuntu server 14.04 how to set UTF-8 CHARSET? It's using now ANSI by default so i can't see cyrillic letters.
I am using non-split config mode, so i have 2 files in /etc/exim4:
/etc/exim4/...
- 597
0
votes
2
answers
4k
views
Cannot resolve host as non-root user
I recently setup a VPS server running Centos 6.5 together with Web Host Manager. My current problem is that I can't resolve hostname either by nslookup or ping on the command line. But when I login ...
- 785
0
votes
2
answers
307
views
Is there a way to allow acess to an specific device that is out of my network? [closed]
I’m trying to allow my mobile device to connect from everywhere, Wi-Fi or not to an specific port of my Linux server which is running a webmin service.
I’m using iptables to set some rules to which ...
- 103
0
votes
2
answers
373
views
Linux Distributions for Limited Bandwidth [closed]
I was recently in a situation where I had limited bandwidth (20GB per month) so I was wondering what Linux distributions (desktop or server) have low bandwidth requirements as far as updates are ...
- 197