python です。
python はド素人です。
import os import re import sys args = sys.argv # ファイル名を引数に指定 alert_log = args[1] # timestamp の初期値 timstr = '------------------------' # エンコーディング(in/out 共通) encode = "shift-jis" # timestamp 文字列 stmstmp = ("2019-","2020-") etmstmp = (" 2019"," 2020") def alert_time(f): ifile = f ofile = f + ".out" with open(ofile,"w",encoding=encode) as o: with open(ifile,"r",encoding=encode) as i: for line in i: line = line.strip() if line[0:5] in stmstmp or line[-5:] in etmstmp: timstr = line elif len(line) != 0: o.write(timstr + ' // ' + line + "\n") if __name__=="__main__": if len(args) != 2: print("Usage : > python alert_timemod.py") else: alert_time(alert_log)
自己責任でお願いできればと思います。