"ulimit" is a shell command for setting limits on what resources a process can use

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Generating core files on Ubuntu

Recently I've been trying to enable core dumps on Ubuntu. I made a simple program, that would crash (it writes some data out of array). At first, core dumps weren't generated. This was because ulimit ...
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nofile ulimit -n on Ubuntu 14.04 LTS

➜ sudo sysctl -a|grep file fs.file-max = 2037581 fs.file-nr = 2784 0 2037581 ➜ ~ cat /proc/sys/fs/file-max 2037581 ➜ ~ cat /proc/sys/fs/file-nr 2720 0 2037581 /etc/security/limits.conf ...
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Ardour, system has a limit for maximum amount of locked memory

After installing and starting Ardour I receive the following warning message: WARNING: Your system has a limit for maximum amount of locked memory. This might cause Ardour to run out of memory ...
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nofile limit not changed for sh command in non-interactive session

Running 12.04.3 LTS A user submitting a batch job to the queue was receiving a 'too many open files error' Investigation suggested changing the /etc/security/limits.conf file which has been ...
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Core only dumped upon receiving SIGQUIT

Learning about signals, I found out that calling the <stdlib.h> functionabort(void); in a C program, which roughly equals to raising a SIGABRT signal, doesn't create a core file on my Ubuntu ...
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How to persistently limit resources of a program

I am running several programs on my computer and under normal circumstances my RAM (2GB) and CPU power is sufficient. However it occurs that a single program suddenly turns the system permanently ...
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How to redirect the output to a log file from upstart script?

I am using upstart to start/stop my c++ app server as shown below - start on runlevel [2345] stop on runlevel [016] chdir /opt/tetra/app_server respawn post-stop script sleep 30 end script ...
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Updating hard limit of “maximum open files” of running process

I am trying to increase the "maximum open files" limit of my running process (apt-cacher-ng). I am following below link http://gregchapple.com/updating-ulimit-on-running-linux-process/ By following ...
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How can I set 'ulimit -r 95' for a non-root user in ubuntu?

I need to set ulimit -r 95 for a non-root user. I edited: /etc/security/limits.conf /etc/pam.d/common-session /etc/pam.d/su according to this and this post. i.e. in limits.conf: [myusername] soft ...