Linux tips

Environmental setting

Create ".bash_profile" in the home directory and write the following, if not exist.

vi ~/.bash_profile

In .bash_profile:

if [ -f ~/.bashrc ]; then
        . ~/.bashrc

Create ".bashrc" in the homedirectory to set prompt, add command line path, and so on. Below is an example of ".bashrc"

if [ "$PS1" ]; then

    # enable color support of ls and also add handly aliases

    #eval `dircolors`
    #alias ls='ls -F --color=auto'
    alias ls='ls -FG'
    alias ll='ls -l'
    alias la='ls -A'
    alias cp='cp -i'
    alias mv='mv -i'
    alias rm='rm -i'

    # set a fancy prompt

    PS1='\u@\h:\w\$ '


To add a command search path, add the following (for instance) to ~/.bashrc

export PATH=${PATH}:${HOME}/qe-6.1.0/bin:${HOME}/qe-6.1.0/PW/tools

and type

source ~/.bashrc

to make the change.

Information of CPU/memory

cat /proc/cpuinfo 
cat /proc/meminfo
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Last-modified: 2019-01-31 (木) 14:18:08 (295d)