Common commands of raspberry pie

Search package

apt-cache search softname1 softname2 softname3

Uninstall and clear configuration

 apt-get remove –purge softname

Restart the network

 sudo service networking restart

Show CPU Information

lscpu  

Show CPU temperature

vcgencmd measure_temp

Display memory information

free -h

Show SD Card information

sudo fdisk -l

Print system information

uname -a

voltage

vcgencmd measure_volts core

GPIO Information

gpio readall

lookup

# Find the file in the root directory httpd.conf, It means to search the whole hard disk 
find / -name httpd.conf　
# stay /etc Files under directory httpd.conf　
find /etc -name httpd.conf　
# Use wildcards *(0 Or any number of ). It means that /etc Directory to find the file name contains string ‘srm’ The file of 　
find /etc -name ‘srm’　　
# It means to search the file name in the current directory. The beginning of the file name is a string ‘srm’ The file of 
find . -name ‘srm*’ 　
#  Find last in system 10 Files accessed in minutes (access time)
find / -amin -10 　　
 #  Find last in system 48 Files accessed in hours 
find / -atime -2　　
#  Find files or folders that are empty in the system 
find / -empty 　　
#  Find in system belongs to  group by cat The file of 
find / -group cat 　
#  Find last in system 5 Files modified in minutes (modify time)　
find / -mmin -5 　　
# Find last in system 24 Documents modified in hours 
find / -mtime -1 
# Find in system belongs to fred This user's file 　　
find / -user fred 　
# Find out the value greater than 10000000 Byte file (c: byte ,w: Two words ,k:KB,M:MB,G:GB)　
find / -size +10000c　
# Find out less than 1000KB The file of 　
find / -size -1000k