---
tags: notes, install, parallel
---

# GNU Parallel installation note
- env : linux/x86_64/bash
- link : [kmo/notes_gnu_parallel_install](https://hackmd.io/@kmo/notes_gnu_parallel_install)
- 說明 :
gnu parallel 安裝筆記，適用大部分 Linux 系統
這邊列舉 rpm 是作者維護的版本，隨時會保持最新
除此之外，還可透過 [conda-forge](https://anaconda.org/conda-forge/parallel)，由社群持續更新的 gnu parallel
其他系統，可參考[官網](https://www.gnu.org/software/parallel/)提及 Official packages exist for

# Package Manager

- install gnu parallel through package manager

## yum (RHEL/CentOS)

- create repo file

cat << EOF > /etc/yum.repos.d/gnu_parallel.repo
[gnu_parallel]
name=tanges Project (CentOS_7)
type=rpm-md
baseurl=https://download.opensuse.org/repositories/home:/tange/CentOS_7/
gpgcheck=1
gpgkey=https://download.opensuse.org/repositories/home:/tange/CentOS_7/repodata/repomd.xml.key
enabled=1
EOF

- install

sudo yum install parallel

- uninstall

sudo yum remove parallel

## conda (Linux/Windows/macOS)
- install gnu parallel through [conda-forge channel](https://anaconda.org/conda-forge/parallel)
- install

conda create --name parallel_env --channel conda-forge parallel

- use

conda activate parallel_env

- uninstall

conda remove --name parallel_env --all

# Manual Installation

- required command : perl, bzip2
- install to ~/parallel

# change directory to /tmp
cd /tmp

# download
wget https://ftp.gnu.org/gnu/parallel/parallel-latest.tar.bz2

# untar *.tar.bz2
tar jxvf parallel-latest.tar.bz2

# change directory to parallel directory 
cd parallel-*

# configure, make and install
./configure --prefix=/home/$USER/parallel && make && make install

# add gnu parallel path to environment variable
cat << EOF >> ~/.bash_profile
PATH=~/parallel/bin:\$PATH #_gnu_parallel_path_#
EOF

# clean
rm -r /tmp/parallel-*

- logout (Ctrl+D or exit) and login for initializing ~/.bash_profile
- check installation success

parallel --help
man parallel

- uninstall

# remove gnu parallel
rm -r ~/parallel

# remove gnu_parallel_path in profile
sed -i '/#_gnu_parallel_path_#/d' ~/.bash_profile

# reference
- https://www.gnu.org/software/parallel
- https://build.opensuse.org/repositories/home:tange/parallel
- README in parallel-latest.tar.bz2

---
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