I am connected to a network via SHH. Now, i know how i can see which users are logged on as well, but how can i see how many times each user has connected? this refering to users that have logged on at least once
View 7 RepliesI want to get the time from power on system to showing user login view in Linux, how to do? Can it work only with shell?
View 2 Replies View RelatedI need to call a vbscript from another vbcrip running X amount of times.
View 1 Replies View RelatedI have a few multi-user servers in an academic laboratory. I am having a problem with some users maxing out the available RAM, causing such sever slowdowns the machine essentially crashes. My servers are Dell Power Edge's running Ubuntu 8.10 Server Edition (Not my choice). I would like to set a maximum limit on the amount of ram a user can utilize. This morning I experimented with setting limits via /etc/security/limits.conf and using ulimit. Neither of them prevented my test program, a simple infinite loop of mallocs, from crashing the server.
View 7 Replies View RelatedHow to get output of text file containing account number, debit amount, credit amount,date using shell script?
View 1 Replies View RelatedIf I only want to let a user be able to login via telnet a max number of times equal to 2 how would I go about doing this?I have found this little tid bit:per_source = 2but that only allows 2 connections from the same source (i.e. network) and that would not work. For some reason our telnet sessions are not dying off after a user has shutdown their PC and then the next time they login it adds another telnet session.
1. user1 31300 /dev/pts/409
2. user1 27539 /dev/pts/539
3. user1 18042 /dev/pts/316
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Can anybody show me how to view command history of another user? I am an admin on my machine. I can see normal history by viewing /home/user_name/.bash_history but i can't see commands of that "user_name" when they were doing sudo. Is there a way to view all command executed by one user?
View 3 Replies View RelatedOnce you add a user(s) to be an administrator on the group you've created using gpasswd command (for example, i've added joe (username) as administrator for payroll (groupname) group using gpasswd); is there any way for me to view the list of users that I've assigned as administrators for a particular group? if so, what is the command line that i need to run?
View 2 Replies View RelatedJust wondering if there is a way to view all connected devices on my network?? Something similar to view network map in vista?? I know the places network but that only shows me my shares and I want to be able to see everything that is on there ie printers, routers, VOIP, other non-shared computers, etc...
View 3 Replies View RelatedI want the last login information whenever I log in through FTP.
This is possible for normal console and SSH logins by configuring in /etc/login.defs file. But I am not able to view the last login information when FTP is used.
After Days of trying to install Nagios, I eventually got everything working fine ! The only problem now is I get the following error message on the nagios web interface: "It appears as though you do not have permission to view information for any of the services you requested... If you believe this is an error, check the HTTP server authentication requirements for accessing this CGI and check the authorization options in your CGI configuration file."
View 1 Replies View RelatedIs there away to view wireless access points without being connected. I am having trouble getting connected to my wireless DSL modem. I have no problems connecting with Windows Vista. Just can not get Ubuntu 9.10 to connect. iwconfig says no associated with access point. I can connect with ethernet cable.
View 3 Replies View RelatedWe have a webcam that is connected to a tv tuner card via the rca input on the tuner card. I want to set that up so that i can view it remotely over the internet. I've seen you can use vlc to do this, but the problem is that I don't want to have the webcam's computer recording and streaming all the time. I want it to only do that when i want to view it from my remote computer. We don't view the camera at a regular time, so a set schedule wouldn't work.
I hope this all makes sense. Is this possible, and if so, what is recommended for getting this done.I'm hoping i can somehow control this with a remote control and we'd see it on our tv monitor (that'd make it easy for the non-computer people here), so if it could be done in a script that would be great cause i can have the remote run the script.
it is possible if i can have sub-users in my server and can i allocate a limited amount of space only. For example i am the root of server and now i can add another user with name john and he should be able to use only of 2GB out of my total hard-disk.
View 4 Replies View RelatedAre there any tools to view/edit user space memory of running processes on Linux?
It would be a great learning tool.
I have linux system which receive data from other system having linux OS in that also. but i cannot send data on other system.
View 2 Replies View RelatedHow can I view a live log on a Linux Server, so that I can see new log entries instantly as they are being added?
View 1 Replies View RelatedHow to I open, create, edit, or view a file in Linux?
View 5 Replies View RelatedOur LAN is connected to internet via leased line, and it is getting slow at peak times.We doubt someone might be downloading files of huge size.Instead of SSH-ing into each system and finding out the download size (ethstatus), is it possible to view from a network bandwidth monitoring software?
View 2 Replies View RelatedI need to allocate a % of the total system memory for a buffer but what is the best method to determine how much memory is in the system? So far the only way I have found is to get the pages of memory:
Code:
long sysconf(_SC_PHYS_PAGES)
Is that the only option?
What is the difference between creating a "regular" user and creating a "system" user on Linux?
For example:
Code:
adduser john
Code:
adduser --system john
Similarly it seems there are normal groups and system groups. Doing an internet search and reading man pages does not give much information on the whole concept of system and regular user/group.
How to find ipaddress of the device connected to the system.
View 14 Replies View RelatedI want to calculate the total amount of memory used by the system, Someone please confirm if the below formula is correct.Quote:
((memUsed-mebBuffers-memCached)*100)/memUsed => totalMemoryUsed%
Code:
free -o
total used free shared buffers cached
Mem: 8167004 8115292 51712 0 87680 1444676
Swap: 8388584 3252996 5135588
((8115292-87680-1444676)*100/8115292) => 81%
As per the above calculation 81% of memory is used.Is this correct? and if so Am I running out of memory?what is the limit in % that I should maintain for a better performance?
i wonder if you can modify KDE so that users can only log in once with one session.Currently, with KDE 4.5, i have the problem that user can log in several times and then ending up with an application used in a different session which means that you can not use it in the other session.
View 2 Replies View RelatedI am trying to understand a large amount of allocated memory that seems not to be accounted for on my system.I'll say up front that I am discussing memory usage without cache and buffers, 'cause I know that misunderstanding comes up a lot.I am in a KDE 4.3 desktop (Kubuntu 9.10), using a number of java apps like Eclipse that tend to eat up a lot of memory.after a few days, even if I quit most apps, 1 gb of ram remains allocated (out of 2 gb).this appeared excessive, and I took the time to add up all values of the RES column in htop (for all users).the result was about 1/2 gb.am I trying to match the wrong values?or could some memory be allocated and not show up in the process list?this is the output of free
Code:
total used free shared buffers cached
Mem: 2055456 1940264 115192 0 123864 702900
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For the purpose of running a transmission daemon I have a user called torrent.
I've chowned the download folder and all its contents to torrent:torrent and set permissions so that user/group can read/write.
The transmission daemon is running as the user torrent but I get a "permission denied" error when trying to download. It also won't seed because it can't read the files.
I've tried su-ing as torrent and viewing the folder, I can't do that either but when I use "ls -al" as an administrative user I get "-rwxrwxr-x 1 torrent torrent" or "drwxrwxr-x 4 torrent torrent" (if it's a directory).
This happened after a big upgrade but I can't work out what's going on. I previously had a user called "transmission" doing the same but decided to try deleting that user and starting again to get it to work. As you can see, no such luck.
How to find, what are the files (system & user) created after login to the system in RHEL 5.0?
Any single command available?
I often get responses from people who first say: "Are you sure? You want your network to be exposed to the outside world?" I am not experimenting on a Production Server of NASA or any Security Concern Department. Friends, there is no harm in experimenting on your personal computer or on a test computer which is isolated from the production environment. Look at hackers! What do they do? If they don't know how security is breached then how would they come up with security measures?
If my question reads... "How to let any user perform Administrative Tasks on a Linux System irrespective of his/her privileges on that particular system?" then I would not get the right answers in the first place. They will say... "You are letting everyone destroy your system... are you sure you want to do that?" My question is: Why should we restrict ourselves from experimenting even if it sounds weird to other people?
I give you an example where it is desirable to let an unprivileged user perform certain tasks. You want to know if there are any employees in your office who are storing videos in their home directory and filling up the disk space to a great amount. You have a department called "Command Center or Data Center Operations or Help Desk" call it whatever you would, whose work is to monitor such activities, and you create an account "monitor" for them to monitor such activities but they are not able to do them:
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I'm trying to write a bash script with a for loop that will perform two tasks a number of times depending on the number the user enters at the start. Here is what I got so far. It works fine the first time but then it just exits with no error msgs. The problem is in the way I have written the loop command. I have searched the web for examples to find out what I'm doing wrong with no luck.
#!/bin/bash
declare -i Num=1
declare -i Strnum=8
[code]....
I recently installed ubuntu 10.10 and am completely new to linux. Something I recently noticed is that my whole system will freeze 2 times after logging back in, but after that it works fine. I will log in, then it will work fine, but shortly after it will completely freeze. After about a minute, it will unfreeze and everything will work fine. Then after a little longer, the exact same thing will occur. After the second freeze and unfreeze, it never occurs again until I log out and log back in. I do not believe this occurs when first starting the computer.
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