Bash Script for Installing GCC 11.2.0 and Redis 6.2.6 with a Systemd Service

This script automates the installation of GCC 11.2.0 and Redis 6.2.6 on a Linux host.

It first defines the Redis configuration file location: redis_config=/usr/local/redis/bin/redis.conf The gcc_install() function installs required dependencies, extracts the GCC source, configures it for C and C++ languages, builds and installs it, and finally checks the installed version:

yum -y install bzip2

cd /usr/local/src && tar -zxf gcc-11.2.0.tar.gz > /dev/null

cd gcc-11.2.0 && ./contrib/download_prerequisites && mkdir -p build && cd build && ../configure -enable-checking=release -enable-languages=c,c++ -disable-multilib

make && make install

gcc -v

The redis_install() function extracts the Redis source, builds and installs it under /usr/local/redis, creates necessary directories, copies the default configuration and server binary, and adjusts the configuration using sed to disable daemonization, bind to all interfaces, set the data directory, disable protected mode, and specify the log file:

cd /usr/local/src && tar -zxf redis-6.2.6.tar.gz > /dev/null

cd redis-6.2.6 && make && make install PREFIX=/usr/local/redis

mkdir -p /usr/local/redis/{bin,run,log,data}

yes| cp -r /usr/local/src/redis-6.2.6/redis.conf /usr/local/redis/bin/

yes| cp -r /usr/local/src/redis-6.2.6/redis-server /usr/local/redis/bin/

sed -ri '/^daemonize/s/yes/no/' $redis_config

sed -ri '/^bind/s/127.0.0.1/0.0.0.0/' $redis_config

sed -ri '/^dir/s/\.\//\/usr\/\/local\/redis\/data/' $redis_config

sed -ri '/^protected-mode/s/yes/no/' $redis_config

sed -ri '/^logfile/s/""/"\/usr\/\/local\/redis\/log\/redis.log"/' $redis_config

It then creates a systemd unit file /lib/systemd/system/redis.service with the necessary Unit, Service, and Install sections:

cat > /lib/systemd/system/redis.service <<EOF

[Unit]

After=network.target

[Service]

ExecStart=/usr/local/redis/bin/redis-server /usr/local/redis/bin/redis.conf --supervised systemd

ExecStop=/bin/kill -s QUIT $MAINPID

Type=notify

User=redis

Group=redis

RuntimeDirectory=redis

RuntimeDirectoryMode=0755

[Install]

WantedBy=multi-user.target

EOF

Finally, it reloads the systemd daemon, starts the Redis service, and invokes the two installation functions:

systemctl daemon-reload

systemctl start redis.service

gcc_install

redis_install