#BASH RETURN PROC CPUINFO DOWNLOAD#
#BASH RETURN PROC CPUINFO FREE#

The example below is from a 2 socket machine. For example, use commands such as vmstat 5 5 or iostat 5 5 to get a better picture of system performance rather than reading one of the available /proc files.To add to the existing answers, you can determine information about Intel's HyperThreading by looking at the 'siblings' line in /proc/cpuinfo. Additionally, some of the /proc info isn't what you'd want to use for system assessment. As I stated earlier, there are other ways to display the information in /proc. The /proc filesystem has a ton of valuable information available to system administrators who want a convenient, non-command way of getting at raw system info.

Usually, the uname -a command is sufficient to give you kernel version info but for those of you who are developers or who are ultra-concerned with details, the /proc/version file is there for you. Here are the two compared: $ cat /proc/version The /proc/version command provides more information than the related uname -a command does. The /proc/meminfo file gives me a quick memory overview that I like and can redirect to another file as a snapshot.

#BASH RETURN PROC CPUINFO FREE#

I think most sysadmins either use the free or the top command to pull some of the data contained here. It gives me a general and a specific look at a system's memory allocation and usage. The /proc/meminfo file is the second file I check on a new system. If your system contains more than one CPU, the CPU numbering begins at 0 for the first CPU. This is a virtual machine and only has one vCPU. Model name : Intel(R) Core(TM) i5-7360U CPU 2.30GHzįlags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc eagerfpu pni pclmulqdq monitor ssse3 cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx rdrand hypervisor lahf_lm abm 3dnowprefetch fsgsbase avx2 invpcid rdseed clflushopt md_clear flush_l1dĪddress sizes : 39 bits physical, 48 bits virtual I want to know the CPU make-up of a system and this file tells me everything I need to know. The /proc/cpuinfo file is the first file I check when connecting to a new system. And like all information under /proc, it can be found elsewhere and usually with better formatting, but /proc files are very handy when you can't remember the command or don't want to grep for something. The value of this information is in how the kernel was booted because any switches or special parameters will be listed here, too. $ cat /proc/cmdlineīOOT_IMAGE=/vmlinuz-3.10.86_64 root=/dev/mapper/centos-root ro crashkernel=auto spectre_v2=retpoline rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet LANG=en_US.UTF-8 This file shows the parameters passed to the kernel at the time it is started.

However, if I want that information, I use the uptime command that also gives me a more readable version of /proc/loadavg as well.Ġ0:56:13 up 13:01, 2 users, load average: 0.00, 0.01, 0.03 For me, that's not particularly valuable. For example, the /proc/uptime file gives you the system's uptime in seconds.

The /proc files I find most valuable, especially for inherited system discovery, are:Īnd the most valuable of those are cpuinfo and meminfo.Īgain, I'm not stating that other files don't have value, but these are the ones I've found that have the most value to me. If you issue a long listing command ( ls -l /proc), you'll notice that all files but the kcore (not shown) file have a zero size. The following is a list of /proc directory common text files on Red Hat-based systems: /proc/apm That said, please realize that my definition of value means value to me and to my discovery on inherited systems and on systems with which I have little familiarity. In this article, I'm covering the text files (not directories/processes) with the highest value to sysadmins. Not all of the files have the same value to a sysadmin. Linux system administration skills assessmentĪs you read in my first article, Exploring the /proc filesystem, the /proc filesystem contains a lot of files that system administrators can use to discover the hardware makeup, the configuration parameters, and the complement of processes on a running system.A guide to installing applications on Linux.

#BASH RETURN PROC CPUINFO DOWNLOAD#

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Bash return proc cpuinfo