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Most people do not understand the knowledge points of this article "how to use Linux's ulimit command to set the limit on the number of single-user programs", so the editor summarizes the following contents, detailed contents, clear steps, and has a certain reference value. I hope you can get something after reading this article. Let's take a look at this article "how to use Linux's ulimit command to set the limit on the number of single-user programs".

Linux commonly used commands ulimit commands are used to control the resources of shell programs. Ulimit is a built-in instruction for shell, which can be used to control the resources of shell programs.

Syntax ulimit [- aHS] [- c] [- d] [- f] [- m] [- n] [- p] [- s] [- t] [- u] [- v]

Parameters:

-a displays the current resource limit settings. -c sets the maximum value of the core file in blocks. -d the maximum value of the program data section in KB. -f shell can create the largest file, in chunks. -H sets hard limits on resources, that is, those set by administrators. -m specifies the upper limit of available memory in KB. -n specifies the maximum number of files that can be opened at a time. -p specifies the size of the pipe buffer in 512 bytes. -s specifies the upper limit of the stack in KB. -S sets flexible limits for resources. -t specifies the upper limit of CPU usage time (in seconds). -u the maximum number of programs that users can open. -v specifies the upper limit of virtual memory available, in KB. Example

Display settings for system resources

[root@runoob] # ulimit-acore file size (blocks,-c) 0data seg size (kbytes,-d) unlimitedfile size (blocks,-f) unlimitedpending signals (- I) 1024max locked memory (kbytes,-l) 32max memory size (kbytes,-m) unlimitedopen files (- n) 1024pipe size (512 bytes,-p) 8POSIX message queues (bytes,-Q) 819200stack size (kbytes) -s) 10240cpu time (seconds,-t) unlimitedmax user processes (- u) 4096virtual memory (kbytes,-v) unlimitedfile locks (- x) unlimited [root@runoob ~] #

Set the limit on the number of programs per user

[root@runoob ~] # ulimit-u 500 / / set the upper limit for single-user programs [root@runoob ~] # ulimit-acore file size (blocks,-c) 0data seg size (kbytes,-d) unlimitedfile size (blocks,-f) unlimitedpending signals (- I) 1024max locked memory (kbytes,-l) 32max memory size (kbytes,-m) unlimitedopen files (- n) 1024pipe size -p) 8POSIX message queues (bytes,-Q) 819200stack size (kbytes,-s) 10240cpu time (seconds,-t) unlimitedmax user processes (- u) 500virtual memory (kbytes,-v) unlimitedfile locks (- x) unlimited [root@runoob ~] # above is the content of this article on "how to set the limit on the number of single-user programs with Linux's ulimit command" I believe we all have a certain understanding. I hope the content shared by the editor will be helpful to you. If you want to know more about the relevant knowledge, please pay attention to the industry information channel.

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