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#!/usr/bin/env python
import sys, os, re
boot_dir = '/boot'
lts_vm_files = sorted(
filter(
re.compile(r'vmlinuz-([\d\.\-]+)-lts$').match,
os.listdir(boot_dir)
)
)
if not lts_vm_files:
print(f'No versioned kernel files found in {boot_dir}')
sys.exit(1)
highest_lts_version_file = lts_vm_files[-1]
version_name = re.search(r'vmlinuz-([\d\.\-]+)-lts$', highest_lts_version_file).group(1)
symlink_map = {
f'{boot_dir}/initramfs-{version_name}-lts.img': f'{boot_dir}/initramfs-linux-lts.img',
f'{boot_dir}/initramfs-{version_name}-lts-fallback.img': f'{boot_dir}/initramfs-linux-lts-fallback.img',
f'{boot_dir}/vmlinuz-{version_name}-lts': f'{boot_dir}/vmlinuz-linux-lts',
}
for src, dst in symlink_map.items():
os.path.islink(dst) and os.unlink(dst)
os.symlink(src, dst)
sys.exit(0)
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