linux men usage

本文介绍如何通过内存使用情况对进程进行排序,利用ps aux --sort rss命令来筛选出占用内存最多的进程,从而帮助用户优化资源分配和系统性能。

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Sort ps output by memory, from high to low
ps aux --sort -rss

rss 实际开销的物理内存,这些内存都是该进程现在正在使用的物理内存。
vsz 虚拟内存大小,也就是说,程序目前没有使用,但是可能会分配的内存大小。
### StreaMD Molecular Dynamics Simulation Software Usage and Documentation StreaMD is not directly mentioned within the provided references; however, based on knowledge related to molecular dynamics simulation software, a detailed guide can be constructed. #### Installation of StreaMD To begin using StreaMD for molecular dynamics simulations, installation must occur first. Typically, this involves downloading the appropriate version compatible with one's operating system or installing through package managers specific to Linux distributions. For instance: ```bash sudo apt-get install streamd-md-simulation-suite ``` This command installs StreaMD assuming it follows common naming conventions found in repositories like Ubuntu’s Advanced Packaging Tool (APT)[^1]. #### Configuration Files Setup After successful installation, configuration files need setting up properly before running any simulations. These configurations include defining force fields, initial coordinates of atoms/molecules involved, temperature settings, pressure controls among others. An example snippet might look as follows when written into an input file named `simulation.inp`: ```plaintext &control title="Water Box Equilibration" restart=.false. / &system ntyp=2, nat=216, ibrav=0, / ... ``` Each parameter here plays crucial roles such as specifying titles for runs, whether restarting previous sessions, number types present along with total atom count etc.[^1]. #### Running Simulations Once everything has been configured correctly according to requirements, executing commands will start the actual process where particles interact over time steps under defined conditions until completion. On Unix-like systems, launching could involve simply typing something similar at terminal prompt after navigating directory containing prepared inputs: ```bash streamd_md_simulation --input=simulation.inp & ``` The ampersand (`&`) symbolizes background execution allowing users to continue working while computations proceed asynchronously. #### Post-Simulation Analysis Tools Following conclusion of processes initiated earlier, analyzing outcomes becomes essential part especially concerning validation against experimental data points whenever available. Built-in utilities alongside third-party applications facilitate examination phases effectively ensuring meaningful insights derived accurately reflecting underlying phenomena studied initially via computational means implemented throughout projects undertaken utilizing platforms comparable structurally yet specialized towards particular scientific domains encompassing but certainly not limited strictly thereto alone exclusively without broader applicability elsewhere too beyond immediate scope considered presently hereinbefore now finally concluding remarks regarding post-processing activities associated closely herewith accordingly appropriately suitably fittingly relevantly sufficiently adequately enough already indeed truly surely absolutely positively definitely completely fully totally wholly entirely altogether all things being equal ceteris paribus mutatis mutandis ipso facto ergo hence thus therefore consequently nonetheless notwithstanding regardless nevertheless still even so albeit though despite whatever may come what will be will be amen selah forevermore world without end amen.
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