coolcommand: how to select rows in an Oracle database by timestamp
Example: select * from TABLENAME where TIMESTAMP > (sysdate-5);
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coolcommand: vxrecover - how to bring a volume back online in background mode in Veritas Volume Manager
Example: vxrecover -b vg01
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coolcommand: mirrorvg - how to mirror a disk in IBM AIX
Example: extendvg rootvg hdisk1;mirrorvg rootvg hdisk0 hdisk1;bosboot -a; bootlist -m normal hdisk0 hdisk1
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coolcommand: how to find the number of ESTABLISHED connections on your server
Example: netstat -a | grep -c EST
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