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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52 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
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0answers
318 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 ...
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2answers
885 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 ...
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2answers
200 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
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4answers
427 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
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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: ...
3
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1answer
171 views

ISC DHCPD memory leak solutions and or workarounds

Background: I have recently been put in charge of finding the root of and/or fixing a memory leak with an ISC DHCPD (4.2.5-P1) installation on a Debian (Lenny) Unix server. I have been researching ...
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1answer
232 views

Https not working JBoss AS 7.0.2

I am trying to load SSL certificate to one of our site. We are using JBoss AS 7.0.2 for our application on Ubuntu Server 12.04, it's running successfully on http while on https it's not responding. ...
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2answers
125 views

How to transfer file(s) from a Unix system to a DOS system? [closed]

What is the simplest way to transfer files from a Unix system to a DOS system? Preferably without any "extra" tools on the DOS side.
0
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0answers
41 views

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 ...
1
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1answer
71 views

cp/rsync command with destination as symlink to a directory

I am working on a cPanel backup solution at the moment. We are now informed about this exploit. Exploit : Full ROOT ACCESS to server 1.) create malicious file from, normal user account: mkdir root ...
0
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1answer
60 views

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 ...
0
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1answer
60 views

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 ...
2
votes
2answers
528 views

RHEL 5 list missing critical patches/packages

Im trying to figure out if there is an easy way to identify the missing critical patches/packages on my RHEL5 boxes. This is for audit purposes and was trying to figure out if there was an RPM command ...
5
votes
2answers
295 views

Trying to delete a directory stored on a Windows server, from on a Mac, containing files created on the Mac, getting “Directory not empty”

I am trying to delete a directory stored on a Windows 2008 R2 server, mounted on a Mac as network home (10.8.5). The directory was created by Safari and stores temporary internet files. I need to be ...
2
votes
1answer
921 views

What are main differences between Linux and FreeBSD system from sysadmin point of view? [closed]

What are main differences between Linux and FreeBSD system from sysadmin point of view ? What specifically and significantly differs Linux from BSD (memory/resources/users management, other ...
0
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1answer
208 views

Unix 'find' command to include/exclude subdirectories

Say the folder structure looks like this: . |--folder1 |--subfolder1 |--subfolder2 |--subfolder2 |--folder2 |--subfolder1 |--subfolder2 |--subfolder2 |--folder3 ...
1
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1answer
837 views

kernel warning disk error for command write - solaris svm

Recently this warning came up on my message logs, scsi: [ID 107833 kern.warning] WARNING: /pci@1c,600000/scsi@2/sd@0,0 (sd0): Oct 27 00:14:44 Error for Command: write(10) Error Level:Retryable ...
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1answer
60 views

Differences between UNIX and Linux Drivers [closed]

I've been trying to find an answer to this, been on a wild goose chase. Since UNIX and Linux have different system architectures. My question is on the differences between the drivers for the SPARC ...
1
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2answers
99 views

Long string insertion with sed

I am trying to use this expression to insert the contents of one text file into another after a give string. This is a simple bash script: TEXT=`cat file1.txt` sed -i "/teststring/a \ ...
0
votes
1answer
145 views

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 ...
1
vote
1answer
177 views

Timestamp Updating Constantly on /dev/null

I've been working on a problem with a /dev/null file on an AIX system (just for background it looks as though it was inadvertently deleted and recreated as a normal file by somebody), but in trying ...
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votes
2answers
2k views

how I can get the value of JAVA_HOME from my client

I have nagios client and server, how I can get the value of JAVA_HOME from my client? I have use to set shell command in script that is running from remote host: echo $JAVA_HOME and printenv | grep ...
0
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1answer
356 views

pbs check how much cpu a job is using / job % cpu usage

On a cluster a job is submitted to run on N CPUs. qstat -f doesn't show how much CPU resources the job is using other than the time. How does one check whether 100% of each CPU power is used? It is ...
2
votes
1answer
932 views

vsftpd default permissions for website directory and ftp

I'm trying to setup vsftpd and my users correctly. I can connect to the ftp with my user but I can't create any directory or file. My websites folder will be there: /srv/www/domain vsftpd.conf ...
1
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1answer
512 views

Sftp download directory while excluding files with certain extension

So I know I can download a whole directory like this: sftp> get -R * How can I exclude all files with .ipa extension though? I want to download everything except .ipa or .ipa.* files from a ...
5
votes
2answers
552 views

DFS and Access Based Enumeration - Unix devices cannot access it

I'm currently experiencing issues with DFS shares and ABE, enabled on a Windows Server 2008 R2 File Server. Everything works fine with Windows, the problem is with Linux/Unix machines. They aren't ...
1
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1answer
210 views

How to prevent users from renaming files while providing write permissions on Linux [closed]

For some special purpose, I want to prevent non-root users of the Linux Server from changing/renaming the filenames. However, they can modify and write to the contents of the file. How to do this from ...
1
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0answers
43 views

Apache, php, maven and me—pemissions…

I have setup a local Apache2, with PHP and mysql. I wrote a maven build script to deploy my page on that local server. All that is working fine except for one thing: When I instruct maven to clean up ...
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votes
1answer
184 views

Need help finding (linux compatible) source code for 'pathchar' program

Am unable to locate the source for pathchar (Van Jacobson's wonderful hack - http://www.caida.org/tools/utilities/others/pathchar/) inspite of searching over many places. What happened to it and is it ...
1
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2answers
45 views

How to exclude requests from unwanted sources

Scenario: Client buys our analytics services and includes our analytics SDK in his mobile app. Users who download the app will start sending us lots of data. When the client stops paying for our ...
0
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1answer
35 views

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 ...
2
votes
3answers
126 views

Why use /home instead of /var?

I have seen many tutorials and real life configurations using /home to keep logs or even websites instead of leaving things in /var/logs or /var/www. Why?
0
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1answer
147 views

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 ...
2
votes
3answers
547 views

Is there a utility to read environment variables from an env file and then run a command (more lightweight than foreman)?

foreman can read .env files and set environment variables from the contents, and then run a program e.g. foreman run -e vars.env myprogram ...but it does a lot of other things (and is primarily ...
6
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2answers
253 views

Why are Unix applications documented with an number in parenthesis with man?

When I try to get help on a Unix command, I get reference to say tar(1) or lsof(8). Why is there a number within parenthesis and what does it refer to exactly ?
0
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1answer
60 views

What is setgid(2) used for? [duplicate]

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. ...
0
votes
2answers
473 views

Terminal output being cut off

I'm using ZSH as my shell and running a Debian 7 installation on a Linode box. When I ssh into this box and run any command where the output is larger than the window, the output that extends beyond ...
2
votes
2answers
48 views

Unix how to determine if a program can be executed

I am writing a script to create the source environment. Handling the PATH part is easy. Though how should I check if a program can be executed correctly when its path is added into PATH? Using which ...
0
votes
2answers
3k views

can you help me setup DNS forwarding

I have a dns server in a subnet of the corporate network and i want to tell it to forward to the main dns servers when it cannot resolve this is my file: // // named.conf // // Provided by Red Hat ...
0
votes
1answer
172 views

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 ...
0
votes
1answer
303 views

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 ...
3
votes
2answers
1k views

Shell script command output in if condition comparison fails to compare to same value string

I'm incorporating a script snippet which determines Android version via: adb shell getprop ro.build.version.release which returns: 4.1.2 or 4.0.4 The snippet currently looks like this: if [ "$(adb ...
2
votes
3answers
744 views

how to convert a running process into a nohup and keep a logfile

I have a process currently occupying a terminal ]$ command some_argument I want to exit from the terminal and go home, but in the mean time I don't want to kill this running process. For the ...
3
votes
3answers
127 views

How can a sh script determine if it was started as a cron job as opposed to interactive or background?

I'd like to use the same scripting for cron and interactive, just wondering if there was a universal way over UNIX/Linux systems to easily make this determination.
2
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2answers
68 views

Can `top` show average data?

top shows instant resource usage. Also it has -d option that sets refresh rate. But how can I get average %CPU for processes for 1 minute?
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2answers
59 views

Insight Into System CPU Usage [closed]

We've noticed that top doesn't give much insight into sys CPU usage. It only appears to give CPU percentages for user. Are there any tools out there that give more insight into System CPU usage?
3
votes
3answers
313 views

Cleaning up junk and logs on unix/linux

I manage some unix systems, and users on my system are creating a lot of junk and littering their work areas. I am running into filesystem full every day. There are many terabytes locked up and is ...
1
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2answers
143 views

If I know the PID number of a process can I know its name?

If I have the PID number for a process (on a UNIX machine), how can I know the name of its associated process? What do I have to do?
0
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1answer
464 views

NGINX Reverse Proxy Sharepoint 2010 authentication fails

When presented with the Windows forms based authentication after entering the users credentials I am prompted again for a username and password. This just keeps prompting you, I see no errors in the ...