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Is there a way to see how a program was removed? In this case I had telegram installed on ubuntu 16.04 and now its not there, running

cat /var/log/apt/history.log | grep telegram

did not return any results. Possibly I agreed to remove it when installing another package but I wanted to confirm if that was the case and if not why it happened. Im not certain but I think it was originally installed by running

sudo apt-get install telegram

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Your apt/history.log gets rotated and archived, meaning roughly every month the logfile gets compressed and stored as /var/log/apt/history.log.X.gz, where X is an incrementing number, 1 being the newest archive.

To also search the older, compressed archives for the string telegram, you can use zgrep which is capable of automatically uncompressing files before matching, if needed:

zgrep telegram /var/log/apt/history.log*
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  • zgrep telegram /var/log/apt/history.log* did not return anything, I dont know the exact date I used it last but it would have been in the last couple days. So it should have been in the uncompressed log. Is there anywhere else I could check? – sealfab Sep 23 '17 at 13:39
  • Not that I know, if it got removed by apt it should be in there. You could also check the term.log* files in that directory, but I doubt this will return anything then either. – Byte Commander♦ Sep 23 '17 at 15:07

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