$ lscpu

# Hardware
$ lsblk --nodeps -o name,model

# Memory
$ sudo dmidecode -t memory | grep 'Size\|Speed\|Part Number'

# Motherboard
$ sudo dmidecode -t System Information | grep 'Manufacturer\|Product Name'

lscpu | egrep '^Thread|^Core|^Socket|^CPU\('

nproc --all

# Get the CPU
grep 'physical id' /proc/cpuinfo | sort -u

# Get the core
grep 'core id' /proc/cpuinfo | sort -u | wc -l

# Get the threads
grep 'processor' /proc/cpuinfo | sort -u | wc -l

# Get the cpu version
dmidecode -s processor-version

getconf PAGESIZE
getconf PAGE_SIZE

echo username:new_password | chpasswd

$ su terdon -   ## start a new login shell

$ dmesg -wH

uncompress *.Z
tar -xvf *.tar

dstat -C 0,1,2,3,total

export SHELL=/bin/bash
exec /bin/bash

$ file --mime-encoding filename
$ iconv -f old_encoding -t new_encoding filename

/run/user/<username>/gvfs

$ sudo dpkg --remove unity-scope-gdrive
$ sudo dpkg --remove account-plugin-google
$ sudo apt-get -f install