# Linux

#### Display size of all sub folders in current dir

* macOS

```bash
du -sh ./* ./.*/ 2>/dev/null | sort -h | tail -10 # with hidden
du -sh ./* 2>/dev/null | sort -h | tail -10 # no hidden
```

* Linux

```shellscript
 du -sh -- * .[!.]* | sort -hr | head -n 10
```

#### get all running process of a program

```bash
ps -ef | grep program_name
```

#### unzip a tar.gz

```bash
tar xvzf file.tar.gz
```

#### transfer files through scp

```bash
scp -r /source_folder/ yangj8@10.248.115.166://destination_folder/
```

#### zip a dir

```bash
zip –r filename.zip directory_name
```

#### list all dir

```bash
ls -d */
```

#### list all specific extension file

```bash
ls -1 *.zip
```

#### nohup run

```bash
ls > samplefile.txt 2>&1
```

#### add path

```bash
export PATH="$HOME/bin:$PATH"
```

#### find a specific running process

```bash
ps -ax | grep -i skype
```


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