update

init.sh

@@ -66,8 +66,9 @@ deb https://$sec_site/debian-security $OS_CODE-security main contrib non-free no
     curl -fsSL "https://packagecloud.io/ookla/speedtest-cli/gpgkey" | \
         gpg --dearmor | tee /etc/apt/trusted.gpg.d/ookla_speedtest-cli-archive-keyring.gpg > /dev/null
 
-    cp "$SCRIPTPATH/.zshrc" $HOME
     usermod -s /usr/bin/zsh $(whoami)
+    cp "$SCRIPTPATH/.zshrc" $HOME
+    cp "$SCRIPTPATH/*.py" $HOME
 }
 
 install_pkg(){
@@ -110,4 +111,4 @@ done;
 if [ $INSTALL_ONLY -eq 0 ]; then
     configure;
 fi;
-install_pkg;
+install_pkg;

sort_known_hosts.py

@@ -0,0 +1,97 @@
+#!/usr/bin/env python3
+
+from __future__ import annotations
+
+import sys
+import os
+from pathlib import Path
+from collections import namedtuple
+
+
+class Entry(namedtuple('Entry', ['host', 'algorithm', 'hash'])):
+    separator: str = '.'
+
+    def __str__(self):
+        return f'{self.host} {self.algorithm} {self.hash}'
+
+    @property
+    def key(self):
+        return f'{self.algorithm}{self.separator}{self.hash}'
+
+
+def main(args):
+    filename: Path | None = getattr(args, 'known_hosts', None)
+    file_path = filename.resolve()
+    if not file_path.exists() or not file_path.is_file():
+        sys.exit(1)
+    entryMap = {}
+
+    with file_path.open(encoding='utf-8') as fp:
+        for lineNumber, line in enumerate(fp):
+            content = line.strip().split()
+            if len(content) == 0:
+                continue  # empty line -> skip
+            if line[0].startswith('#') or len(content) != 3:
+                if not line[0].startswith('#'):
+                    sys.stderr.write(f'could not parse a line {lineNumber}: "{line}"\n')
+                sys.stdout.write(line)
+                continue  # comment or erroneous line -> skip
+            entry = Entry(*content)
+            entryMap.setdefault(entry.key, []).append(entry)
+
+    compactEntryList = []
+
+    for key, entryList in entryMap.items():
+        domainList = []
+        ipList = []
+        entry: Entry
+        for entry in entryList:
+            for domainOrIp in entry.host.split(','):
+                if len(domainOrIp) < 2:
+                    sys.stderr.write(f'could not parse {domainOrIp}\n')
+                    continue
+                start_loc = 0
+                if domainOrIp[0] == '[':
+                    start_loc = 1
+                if 'a' <= domainOrIp[start_loc].lower() <= 'z':
+                    domainList.append(domainOrIp)
+                else:
+                    ipList.append(domainOrIp)
+        host = ','.join(sorted(domainList) + sorted(ipList))
+        compactEntryList.append(Entry(host, *key.split(Entry.separator)))
+
+    output: Path | None = getattr(args, 'output', None)
+    output_lines = '\n'.join(
+        map(
+            str,
+            sorted(
+                compactEntryList,
+                key=lambda entry: entry.host[1:]
+                if entry.host.startswith('[')
+                else entry.host,
+            ),
+        )
+    )
+    if output is None:
+        sys.stdout.write(output_lines)
+    else:
+        output_file = output.resolve()
+        if not output_file.parent.exists():
+            os.makedirs(output_file.parent)
+        if output_file.is_dir():
+            print('Can not write to directory.')
+        with output_file.open('w', encoding='utf-8') as wfp:
+            wfp.writelines(output_lines)
+
+
+if __name__ == '__main__':
+    import argparse
+
+    parser = argparse.ArgumentParser(
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter
+    )
+    parser.add_argument('known_hosts', type=Path, help='known_hosts file to read')
+    parser.add_argument('-o', '--output', type=Path, help='output file to write')
+    parser.set_defaults(func=main)
+    args = parser.parse_args()
+    args.func(args)