Author

Tony D

Published

March 24, 2025

Top useful Linux command

Print word

echo "Hello world"

Display the manual of any command

man pwd

show current working location

pwd

show current working location files

ls -l -h

show current working location files include hidden files

ls -al -h

go to find

cd Documents

go back one level up

cd ../

go back to home

cd ..

delete file

rm xxx.txt

delete folder

rm -r  -f LlamaGPTJ-chat

create folder

mkdir text_folder

download file from internet

wget

Change file permissions

chmod 777 LlamaGPTJ-chat

show folder size

du -sh LlamaGPTJ-chat

install software in mac using brew

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

brew --version

install software in linux

sudo apt install xxx

install software with brew

brew install nano

using nano

create txt file

nano

edit current txt file

nano test.txt

show file content

cat test.txt

clear window

clear

show username

whoami

download file from internert

wget xxx

or

curl xxx

find file by name

sudo find / -name "python3.9*"

IP address

For mac

ipconfig getifaddr en0

For linux

ip address | grep  eth0| grep inet |awk '{print $2}'

show calendar

cal

show running program

top

kill process

with id

kill 1341

with name

pkill - f xxx

---
title: "Linux系统操作代码"
subtitle: "Linux command"
author: "Tony D"
date: "2025-03-24"

categories: 
  - Tool

  
image: "images/download.jpg"

execute:
  warning: false
  error: false
  eval: false
---

Top useful Linux command


# Print word

```{bash}
echo "Hello world"
```


# Display the manual of any command

```{bash}
man pwd
```


# show current working location

```{bash}
pwd
```


# show current working location files

```{bash}
ls -l -h
```


# show current working location files include hidden files

```{bash}
ls -al -h
```


# go to find

```{bash}
cd Documents 
```

# go back one level up 

```{bash}
cd ../
```


# go back to home

```{bash}
cd ..
```


# delete file

```{bash}
rm xxx.txt
```


# delete folder


```{bash}
rm -r  -f LlamaGPTJ-chat
```

# create folder

```{bash}
mkdir text_folder
```


# download file from internet

```{bash}
wget
```


# Change file permissions

```{bash}
chmod 777 LlamaGPTJ-chat
```

# show folder size

```{bash}
du -sh LlamaGPTJ-chat
```


# install software in mac using brew 

```{bash}
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
```


```{bash}
brew --version
```

# install software in linux

```{bash}
sudo apt install xxx
```






# install software with brew

```{bash}
brew install nano
```




# using nano

## create txt file
```{bash}
nano
```

## edit current txt file
```{bash}
nano test.txt
```

# show file content

```{bash}
cat test.txt
```


# clear window

```{bash}
clear
```

# show username

```{bash}
whoami
```

# download file from internert

```{bash}
wget xxx
```

or 

```{bash}
curl xxx
```

# find file by name

```{bash}
sudo find / -name "python3.9*"
```


# IP address

For mac

```{bash}
ipconfig getifaddr en0
```


For linux

```{bash}
ip address | grep  eth0| grep inet |awk '{print $2}'
```

# show calendar

```{bash}
cal
```

# show running program

```{bash}
top
```



# kill process

with id

```{bash}
kill 1341
```


with name

```{bash}
pkill - f xxx
```