What comes to my mind is the following: and there do indeed seem to be control characters added whenever Solr start running
[16:33 solr10 1435]$ strings solr.log | diff - solr.log | less 7,8c7 < 2025-01-13 09:42:29.112 INFO (main) [ ] o.a.s.s.CoreContainerProvider ___ _ Welcome to Apache Solr < version 9.2.1 --- > 2025-01-13 09:42:29.112 INFO (main) [ ] o.a.s.s.CoreContainerProvider ___ > _ Welcome to Apache Solr<E2><84><A2> version 9.2.1 *[16:33 solr10 1436]$ strings solr.log | diff - solr.log | sed -n -e l 7,8c7$ < 2025-01-13 09:42:29.112 INFO (main) [ ] o.a.s.s.CoreContainerPro\ vider ___ _ Welcome to Apache Solr$ < version 9.2.1$ ---$ > 2025-01-13 09:42:29.112 INFO (main) [ ] o.a.s.s.CoreContainerPro\ vider ___ _ Welcome to Apache Solr\342\204\242 version 9.\ 2.1$ [16:34 solr10 1437]$ -----Original Message----- From: Silverman, Harry (Contractor) <jsilver...@gpo.gov.INVALID> Sent: Tuesday, January 28, 2025 4:28 PM To: users@solr.apache.org Subject: [EXTERNAL] log file appears binary Hi - We have multiple Solr 9.5.0 installations running on Linux. All are configured the same. On one of those installations, when I grep the solr log, it returns "Binary file solr.log matches". The "file" command returns "data". I can edit or cat the log file and it looks like regular text. We have bash scripts that grep the solr log, and so these scripts don't work on this particular installation. I tried adding charset="UTF-8" to the PatternLayout in the log4j configuration file. That did not help. Any ideas what may be going on here? Thanks, Jay CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and are confident the content is safe.