specify_llvm_clang_ver.sh

#!/bin/bash

if [ "$(id -u)" -ne 0 ]; then
  echo "This script must be run as root. Please use 'sudo' to run it."
  exit 1
fi

if [ $# -eq 0 ]; then
  echo "Usage: $0 <version>"
  exit 1
fi

VERSION=$1
LLVM_BIN_PATH="/usr/bin"

if [ -f "${LLVM_BIN_PATH}/clang-${VERSION}" ]; then
  ln -sf "clang-${VERSION}" "${LLVM_BIN_PATH}/clang"
else
  echo "clang-${VERSION} not found."
fi

for tool in $(ls ${LLVM_BIN_PATH}/llvm-*-${VERSION} 2>/dev/null); do
  base_tool=$(echo $tool | sed -E "s/-${VERSION}$//")
  if [ -f "$tool" ]; then
    ln -sf "$(basename $tool)" "${base_tool}"
  else
    echo "$tool not found."
  fi
done

echo "Symbolic links have been created for LLVM/Clang version ${VERSION}."