#!/usr/bin/env bash
set -Eeuxo pipefail

echo "sudo access is required for installation."
sudo -v

# Check for RedHat.
if [[ $(grep -qv 'ID="rhel"' /etc/os-release) ]] &&
   [[ $(grep -qv 'ID_LIKE="centos rhel fedora"' /etc/os-release) ]]
then
    echo "Error: RedHat Enterprise Linux (RHEL) is required." >&2
    exit 1
fi

# Error on conda detection.
if [[ -x "$(command -v conda)" ]] && [[ -n "${CONDA_PREFIX:-}" ]]
then
    echo "Error: conda is active." >&2
    exit 1
fi

# Require yum to build dependencies.
if [[ ! -x "$(command -v yum)" ]]
then
    echo "Error: yum is required to build dependencies." >&2
    exit 1
fi

# Ensure yum-utils is installed, so we can build dependencies.
sudo yum -y install yum-utils

#!/usr/bin/env bash
set -Eeuxo pipefail

echo "sudo access is required for installation."
sudo -v

# Check for RedHat.
if ! grep -q 'ID="rhel"' /etc/os-release
then
    echo "Error: RedHat Enterprise Linux (RHEL) is required." >&2
    exit 1
fi

# Error on conda detection.
if [[ -x "$(command -v conda)" ]] && [[ -n "${CONDA_PREFIX:-}" ]]
then
    echo "Error: conda is active." >&2
    exit 1
fi

# Require yum to build dependencies.
if [[ ! -x "$(command -v yum)" ]]
then
    echo "Error: yum is required to build dependencies." >&2
    exit 1
fi

# Ensure yum-utils is installed, so we can build dependencies.
sudo yum -y install yum-utils

--- 
+++ 
@@ -5,8 +5,7 @@
 sudo -v
 
 # Check for RedHat.
-if [[ $(grep -qv 'ID="rhel"' /etc/os-release) ]] &&
-   [[ $(grep -qv 'ID_LIKE="centos rhel fedora"' /etc/os-release) ]]
+if ! grep -q 'ID="rhel"' /etc/os-release
 then
     echo "Error: RedHat Enterprise Linux (RHEL) is required." >&2
     exit 1
Add check support for amzn
