Linux command summary

Basic commands

sudo -i -u accout_name switches to the user named accout_name

sudo -i switches to the root user

sudo -u switches to Specify user

cd to switch to the root directory

cd .. Switch to the upper level directory, use cd ../../../../ to switch up to 4 levels from the bottom up Root directory

pwd View the current directory

echo $profile_name View the Path of a system variable, Ex: echo $JAVA_HOME

./start_up.sh or sh start_up.sh Execute this command in the bin directory of a certain installed software, that is, start the software, such as tomcat

copy

cp file_name destinct_file_name Copy name=file_name to destinct_file_name, completely overwrite, destinct_file_name does not need to be created in advance

cp -rf directory_name1 distinct_derectory_name2 Copy the hierarchical directory directory_name1 to distinct_derectory_name2

Delete

rm -r * Recursively delete all files in the current directory

rm -rf directory name recursively force deletion

Create

mkdir directory Create directory

mkdir -p directory1/directory2 Create multi-level directories at one time

touch file_name Create file

Process related

ps -aux|grep ps_name Check the process with a process name = ps_name to get the process ID number. Start time and other information

kill -9 ps_id Kill a process with id=ps_id

jps Display the pid of all current Java processes, including id and name

pwdx Pass Find the startup directory corresponding to the file by PID number

View the file content

more Display the file content page by page more file_name

cat Connect and display Information about one or more specified files cat file1 file2

vi edit

/pattern searches the string of pattern backward from the current position. After the search is successful, Enter, click n on the keyboard to match the next

:set paste Copy the content from wins to linux, after vi, enter this command to avoid confusion in the sorting of the copied content

i Insert content

:q Exit without editing

:q! Edited but do not need to save and exit

:wq Save the edit and exit

Find

find .|grep -rn “string_name” -l Find files with string_name field in the current directory

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