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Questions tagged [unix]

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

Excerpt from the Wikipedia page

Unix was originally written in assembly but has since been rewritten in C. It has been branched many times both commercially and open source. One popular variant is the BSD variant which originated from the University of California, Berkeley. It also gave rise to Linux.

Notable variants

  • Silicon Graphics - Irix
  • IBM - AIX
  • Sun Microsystems - Solaris
  • Hewlett Packard - HP-UX

Unix is officially trademarked as UNIX.

Unix on Wikipedia

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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 advise what I need to do is just to run the…
user32770
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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 root@phxdbx1145:/home/david/zook# ps ax | grep zook.py 16352 pts/6 S+…
arsenal
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bash: Blocking user after several unsuccessful tries to login

I have a problem. Someone tries to get into my server, and it happens too often. For example: Aug 19 14:11:42 oplot sshd[18373]: input_userauth_request: invalid user oracle Aug 19 14:11:42 oplot sshd[18372]: pam_unix(sshd:auth): check pass; user…
Oleg
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Balancing server bandwith

I am working on a file uploading website. It will be run on dedicated server with 1GBPS connection. I wanna offer visitors max download speed possible at the current moment. So lets say server can produce 100mb/s for downloads. If there are 10 users…
user2976389
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Multiple VirtualHost Configuration files in Apache2.

I have servers with RHEL-5, Apache-2.2.22, PHP-5.3.25 I know I can configure multiple virtualhost configurations in mutliple file by including these files in httpd.conf. Can Apache support this arrangement while any incorrect configuration in one…
Mandip Mankotia
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Optmize server access for LAN and WAN (Internet Access)

I am trying to optimize my server so that accessing the local network as well as the internet. The OS is Solaris 9 running on a SUN V210 Connecting outside takes a long time, with sometimes there is a failure in the connection. I get the following…
help_me
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Unix 'find' command to include/exclude subdirectories

Say the folder structure looks like this: . |--folder1 |--subfolder1 |--subfolder2 |--subfolder2 |--folder2 |--subfolder1 |--subfolder2 |--subfolder2 |--folder3 |--subfolder1 |--subfolder2 I would like to find all…
Stan
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IP routing Solaris 9 access the internet from local network

I am trying to configure the NICS on the Solaris Sparc server. My problem lies in getting out to the "Internet" from the local network. I have requested the NIC to receive a DHCP server address #ifconfig -interface dhcp start. If anyone could guide…
help_me
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UNIX differences, and which is best for what applications?

I am a Linux user, I mainly use RedHatArc and ubuntu/debian. I want to start using Unix's for servers instead of Fed/Cent. I have tried but never successfully installed FreeBSD. I haven't tried NetBSD yet (DLing the ISO now), and have not gotten a…
Jimsmithkka
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Is there a tool for indexing a directory in order to perform cheap content search? (hashing by word, for example)

I am often using grep -R on an entire directory tree to find all files that contains a specified word. I wonder if there is a tool that makes the whole operation much faster, maybe via hashing? (Unix systems!). Even better if it exists to optimize…
fstab
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Debian mysql-proxy reserved connections

I was looking in too the mysql-proxy configuration, and decied to install it in order to make an access point to my servers whenever they reach high peak, however i want to have 5-10 reserved connection to my servers, but i dont see that in the…
Alin Andrei
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Is there a way to use more than one DNS simultaneously in Linux?

When I'm connecting to the VPN at work, I frequently run into problems with sites blocked by OpenDNS, and also being limited to the DNS entries on their DNS server. I'm wondering if there is a way to have domain-name resolution go to one server, and…
Neil
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What is setgid(2) used for?

I'm having trouble understanding POSIX permissions, specifically setgid(2). I understand that setuid(2) changes the user ID of the calling process so that it takes on the privileges of the new user. This makes sense, because a user only has a single…
user2569445
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Do any Unix/Linux FTP daemons allow users to be "jailed" without using chroot?

When setting up an FTP account for a specific purpose - e.g. as a drop-point for sharing data files - it seems sensible to give the user access only to the particular directory, and no view of a wider file system. On *nix systems, in particular,…
IMSoP
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How to mention the prefix directory path in CURL command

I am new to Linux, i want to write the perl script to download the files from FTP sites but here i want to use curl command to download the files. which is working fine in wget command but not working with curl command. The below coommand is…
user2767714
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