Find Large Directories on AIX

Playing with Cordova, I was getting this error when building iOS version: Error: xcode-select: error: tool 'xcodebuild' requires Xcode, but active developer directory is a command line tools instance Even full install of Xcode didn’t fix this error. The solution was to run the following command to use full Xcode instead of command line tools version that I had installed earlier: sudo xcode-select --switch /Applications/Xcode-beta.app/Contents/Developer

I followed instructions here: https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-as-a-send-only-smtp-server-on-ubuntu-18-04 Everything seemed okay but emails were not getting delivered. Logs showed me that smtp connections were timing out: tail -f /var/log/mail.log May 3 12:28:10 postfix/smtp[3160]: connect to gmail-smtp-in.l.google.com[172.217.197.27]:25: Connection timed out May 3 12:28:10 postfix/smtp[3160]: connect to alt1.gmail-smtp-in.l.google.com[2800:3f0:4003:c00::1a]:25: Network is unreachable May 3 12:28:40 postfix/smtp[3160]: 4984C41A1E: to=<xxxx@gmail.com>, relay=none, delay=3246, delays=3186/0.01/60/0, dsn=4.4.1, status=deferred (connect to alt2.gmail-smtp-in.l.google.com[2a00:1450:400b:c00::1a]:25: Network is unreachable) However, I could ping any of the above ip addresses just fine.

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