Unix is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs.

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5
votes
2answers
966 views

Copy directory tree without empty directories?

I have the following tree # upper letters = directory # lower letters = files A |-- B |-- C |-- D |-- e <= file |-- F |-- G I need to copy this tree to another destination, ...
1
vote
1answer
53 views

curl is giving wrong result via ssh

Curl is working fine on the node itself: [ec2-user@smokebase1 ~]$ curl -s -I --retry 3 --header 'Host: smoke-base.dev-test.com' ...
2
votes
2answers
131 views

how to configure firewall with “psad” utility to avoid port scan

I am trying to configure psad to stop port scanning and other attacks. Currently I have following rules set for my firewall which drops all incoming connection except port 22,80,443 and 3306. -A ...
3
votes
2answers
693 views

How to tell the difference between “No such file or directory” and “Permission Denied”

I'd rather not parse STDERR, but I can't think of another way to tell the difference, programmatically, between the two: $ ls /net/foo.example.com/bar/test /net/foo.example.com/bar/test: Permission ...
0
votes
2answers
76 views

keep in tar.bz2 original directory datetime

I'm looking for a solution to create a tar.bz2 file and keep the original folder timestamp. My solution is "touch -t {original timestamp}" file.tar.bz2 manuel@mfpanzuela:~$ ls -la drwxrwxr-x 2 ...
2
votes
0answers
279 views

Solaris 9: Degraded mirror unmanageable with raidctl after drive replacement

We have a pair of Sunfire v20z's (WITH LSI MPT raid) that have each had one drive in their mirrors die. bash-2.05# cat /etc/release Solaris 9 4/04 s9x_u6wos_08a x86 ...
1
vote
0answers
36 views

Redhat quitting process never works always have to kill it

I am working on a RedHat server creating a unicorn process. I have two sets of these processes being created. I am able to QUIT one of the process fine and do so over and over again create it and QUIT ...
0
votes
1answer
54 views

OSAS v4 Open Systems Accounting Software [closed]

My company recently purchased another company and along with it, came an old SCO Openserver (v5) running OSAS v4. We use TinyTerm as recommended to access this but no one knows how to use it. I've ...
0
votes
1answer
422 views

Unable to clear sendmail mqueue-client

drwxr-xr-x 2 smmsp smmsp 4.0K May 6 23:31 mqueue drwxrws--- 2 smmsp smmsp 29M May 8 10:40 mqueue-client As you can see mqueue-client is filled with 29 megabytes of unsent mail. This seems to ...
-4
votes
1answer
82 views

Server that transfers FTP to FTPS without downloading on my PC [closed]

I need to do a server to server transfer, and the data is about 1 TB in size. One server supports plain FTP, but the other mandates FTPS. Both servers are located in the US. If the data was within a ...
1
vote
1answer
74 views

How to change protected config files via web/php interface?

I'm looking for way to modify configuration file that resides below /etc directory via web (in particular case PHP) interface. While it's not a problem to read (if you set up file permissions ...
0
votes
2answers
50 views

If a web root directory has a simlink that points to a folder one-level up, does that pose a security risk?

Assuming a Linux/Unix system. Not asking about any particular server software, just wondering in general. I want to use this to include javascript libraries or things like that in multiple sites or ...
2
votes
1answer
3k views

502 Bad Gateway Error Nginx connect() to unix:/tmp/unicorn.sock failed

This is my first question on Server Fault. I could not find a solution to this while searching the web. I am working on an OpenBSD server running Nginx, which I did not setup, that is throwing a 502 ...
-1
votes
2answers
74 views

Security in users having sudo access

How to protect my passwords list (in different databases for example) in a UNIX environment where most of the users have sudo access to other user IDs? I have a script (main.sh) with the following ...
0
votes
1answer
77 views

Give user permission to create/delete particular file?

Is it possible to give a user permission to create/delete a file at a certain path, but not to modify other files in the same directory?. I'm using Ansible to provision a CentOS 6.4 box. I'd like to ...
2
votes
1answer
302 views

Create a link to the Unix socket [duplicate]

Is there a possibility to create a hard link for an unix socket? I'm creating a jail and symbolic links won't work, so I'm looking for a solution, how to provide an unix socket inside chrootted ...
2
votes
3answers
180 views

How do i change the global login shell on a unix system?

I want to set the login shell (the shell they get when they log in) of all existing and future users. The correct way to change the login shell seems to be chsh. But this only allows me to change the ...
1
vote
2answers
1k views

Environment variables are unavailable when running scripts over ssh

Suppose I have two hosts: A and B with users a and b. B is Windows machine with Cygwin installed, if this matters. B is configured to be accessed from A through SSH without password (it contains A's ...
2
votes
1answer
150 views

How can I make my own linux distro? [closed]

My question is bit off-topic or may be impractical. The thing is, on the web too many material available to download customized linux distro. But what if I want to make my own linux distro ? ...
0
votes
2answers
720 views

Saving SSL password for SVN in Ubuntu

I have tried to set up my SVN that way, that it saves my passwords, but for some reason it won't work. I am using a SSL certificate, for which I need to provide a password every time. I have tried ...
1
vote
0answers
24 views

Process identifier mask in z/OS

I've noticed a curious pattern to process identifier numbers on the z/OS system I'm working on (uname reports it as OS/390), they're either 1-4 digits long or 8 digits long but never in between. The ...
0
votes
2answers
183 views

Using Jenkins to access mysql files on the same instance

I have a Jenkins installation and running mysql server on the same box. One of my jenkins jobs is supposed to tar up the /var/lib/mysql folder but I get the following error tar: ...
1
vote
1answer
46 views

How do I accept two different types of network connections using iptables

I need to setup iptables for a mongodb database server, such that it allows only two types of INPUT connections: one connection to port 27017, monogdb's default port, from our main web-app one ssh ...
0
votes
3answers
514 views

Exclude with the find command [duplicate]

I need some help getting the find command to work right in a script working on. I need to be able to exclude some directories. Below I have what I'm doing as a work around. sudo find / ( -name ...
1
vote
2answers
81 views

How do I show listening open ports from the shell?

I always have to google this and ServerFault is never the first result. Typically I want to do this on a unix box, but I'd also like to know how to do it on a Windows machine from CMD.exe.
0
votes
2answers
825 views

CPU usage command for monitor script

Is there a command for FreeBSD (except the top -P) I could use to monitor my dedicated server CPU usage? I am in progress of writting my bash script which will notify me as soon as any of the CPU core ...
1
vote
1answer
50 views

Viewing the packet-size of an incoming IP

I have been looking for a sulution to this for a few hours. after no avail im asking for help here. I need to watch my incoming packets by Size. in a format similar to: IP SIZE I have tried ...
1
vote
1answer
316 views

Can sftp check for existing data?

I have 700 binary files (pdf) to download and right now only 400 are available on a sftp server. Can sftp, from the cli, determine what files exist in the local directory so it doesn't need to ...
3
votes
1answer
4k views

Can't log in to FTP on Debian with vsftpd

Linux noob here so please bear with me :) I'm trying to setup FTP access to my Apache server but I'm receiving a 530 Login Incorrect error. I installed the vsftp package via sudo apt-get install ...
0
votes
2answers
137 views

How to block rejected messages I did not send?

In exim mainlog I see a lot of rejected messages I did not actually sent (they were send from spammers). 2014-02-20 23:42:47 H=a94-132-158-40.cpe.xxxxxxx.pt (zonhub) [94.132.xxx.xxx] ...
2
votes
1answer
456 views

dmesg time vs system time time isn't correct

I hope that here is somebody that can help me with this strange problem. I think that i know why it is happening but i don't know how to solve it. Maybe it is because the BIOS time isn't set correct ...
2
votes
2answers
1k views

How do you tell if a user is “allowed to log in” on Linux?

The question is simple, I want to list all the user accounts which can log in to my system, but I'm not sure if that all the users in /etc/passwd are "could login" users? Details: I can see users ...
0
votes
2answers
404 views

Portforwarding with IPTABLES and Remote IP detection

I was able to forward 80 port from my primary server 192.168.90.1 to the second one 192.168.90.2 with IPTABLES The primary server has a public address X.X.X.X so I forwarded X.X.X.X:80 -> ...
1
vote
1answer
55 views

How to delete special character in linux

By mistake I made a file with the name \. How do you delete something like that? I've tried rm --\ rm "\" rm -- -\and nothing seems to work. I bet it's so simple but I'm stumbled - any suggestions?
0
votes
1answer
189 views

Fix Solaris 11 GNU tools location for RVM

I am trying to install RVM on a Solaris 11 system, the curl -sSL https://get.rvm.io | bash -s stable went through, but when I actually try to use rvm, it simply stats "ERROR: Missing GNU tools: grep ...
1
vote
2answers
433 views

SSH Tunnel or Reverse Tunnel

I'm trying to establish a SSH tunnel to allow VNC/ARD connections (ports 5900 and 3389). However I'm uncertain about a certain thing: Let's say machine A has IP 192.168.103.1 and has services running ...
1
vote
1answer
44 views

Windows process management tools

Unix has tools like upstart, angel, god, etc to keep processes running constantly on system start and can restart processes that have failed. Does windows have the ability to do this natively?
13
votes
3answers
987 views

Is there a mechanism in Unix (or Linux) to stop an in-progress core dump?

Let's say a (very) large process is crashing and dumping core, and we know the cause from other information (possibly an assert message, maybe something else). Is there a way to stop the core dump ...
-1
votes
1answer
2k views

KVM-Host OS recommendation [closed]

I am about to migrate a server installation (one OS) to a newer hardware and wish to enable/use KVM. So the hardware is fixed (https://www.hetzner.de/hosting/produkte_rootserver/ex40) , now I got the ...
-2
votes
2answers
111 views

How to block access to a local user to a local port?

How to block access to a local user to a local port? Example: user Elvis should not have access to the port 25600 on the same server.
0
votes
2answers
84 views

Control IP to access a server , which use iptables

I would like to use linux command iptables to control to only allow the same subnet IP to access a server , what I would like to do is to allow any services from 10.168.1.0 to this server , could ...
23
votes
5answers
3k views

Can a program tell it is being run under sudo?

I have a program that should behave differently if it is being run under "sudo". Is there a way it can find out if it was run under sudo? Update: Someone asked why would I want to do this. In this ...
2
votes
2answers
66 views

redundancy in a single SCSI target

following-on from my earlier question about resurrecting an ancient Intergraph 6800 machine (licence file for extra logins on ancient Unix (CLIX) system), the original problem was a failed hard disk ...
1
vote
0answers
75 views

Mac OS 10.6.8 Firewall Blocking Wiki for ONE User

This is a very bizarre issue that I hope someone can help with. We're running 10.6.8 server to host our internal wiki. We had the firewall enabled on that machine without any issues. Last week one ...
1
vote
0answers
51 views

Is there a way for a user to temporarily remove its own group membership within a script?

I'm writing a script which will be used to "detect" whether a generic, no-frills, user account has access to certain files. Basically a user which only has membership in the "staff" group or ...
1
vote
0answers
296 views

rsyslog logging same data to multiple files

I'm new to configuring rsyslog for centralized logging and was wondering if one of you experts could help me with the following problem. I am trying to store logs for each remote host to a per host ...
0
votes
2answers
848 views

How to kill the process using the name of the program instead of PID?

I started my Python program in the background using nohup as mentioned below - nohup zook.py & Now I am trying to kill this process so I did the ps command as mentioned below ...
1
vote
2answers
194 views

How do I iterate bash arrays and make an SCP command efficiently?

I need to scp the files from machineB and machineC to machineA. I am running my below shell script from machineA. I have setup the ssh keys properly. If the files are not there in machineB, then it ...
9
votes
4answers
426 views

Linux cd .. command

Say if I need to do this a lot: cd ../../../../foo/sub1/bar/dest/ cd ../../../../foo2/sub1/bar/dest/ cd ../../../../foo3/sub1/bar/dest/ cd ../../../../foo/sub1/bar/dest/ Is there any faster way to ...
1
vote
2answers
1k views

Logging ssh info using syslog-ng daemon in Cygwin

I have setup the syslog-ng daemon using Cygwin in Windows 7. What I want to do is to log all of the ssh failed passwords, etc to /var/log/sshd.log. I tried to do this by adding the following line: ...