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How can I remove the warning from the output of 

keytool -v -alias sssa -list -keystore /var/tmp/certs -storepass passwd | grep 'until' | head -1 | grep -v Warning

Warning:
The JKS keystore uses a proprietary format. It is recommended to migrate to PKCS12 which is an industry standard format using "keytool -importkeystore -srckeystore /opt/miep/msaapp/msa_domain/.keystore -destkeystore /opt/miep/msaapp/msa_domain/.keystore -deststoretype pkcs12".

Valid from: Wed Feb 12 19:00:00 EST 2020 until: Sat Feb 13 07:00:00 EST 2021

I need only the last line.

U880D
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apoonkun
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1 Answers1

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Warnings and errors are usually printed to STDERR rather than STDOUT, add a STDERR redirect to get rid of them:

keytool -v -alias sssa -list -keystore /var/tmp/certs -storepass passwd 2>/dev/null | ...

Andee
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  • Unfortunately, that's not the case here - even "regular messages" are printed to stderr. – levant pied Jul 28 '23 at 17:24
  • Adding example ```keytool -v -list -storepass changeit -keystore /opt/java/openjdk/lib/security/cacerts 2>/dev/null | grep redis Alias name: redis-tls DNSName: test-redis-master DNSName: test-redis-master.default.svc DNSName: test-redis-master.default.svc.cluster.local``` – bhargav joshi Aug 07 '23 at 16:56