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I'm trying to increase the open files limit for Ubuntu 16.04 version by using vi /etc/security/limits.conf Then I add two lines like:

#* soft nofile 4096
#* hard nofile 4096

But when I use :x to save and exit I get E45: 'readonly' option is set (add ! to override) and it doesn't exit.

When I use nano etc/security/limits.conf to modify it I get:

Error writing /etc/security/limits.conf: Permission denied
Eliah Kagan
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nebras junaid
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1 Answers1

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/etc is a system directory that a users account will not (or should not) have access to.

You need to use sudo vi /etc/security/limits.conf was required, ie. the use of sudo elevates privileges for the command following the sudo.

guiverc
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