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Dual boot with UEFI boot mode and grub2

Several days ago I installed a Ubuntu 18.10 on a machine already installed a Windows 10. At the begi...
28/10/2018 Linux 163 views Comment
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The difference between ‘&&’ and ‘-a’

These days I am reading the book 'Advanced Bash-Scripting Guide' and I got confused about '&&...
18/08/2018 Linux 82 views Comment
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‘lsnrctl status’ could not display the status of running listener correctly

My friend got this issue and wanted to know the reason, so I built a test VM to verify it. The dbss ...
11/06/2018 Linux 649 views 1
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ORA-12547 and sysctl -p

This night I installed an Oracle 12c database on SLES12SP3 to test the dbss script on SLES system an...
11/06/2018 Linux 125 views Comment
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Systemd service was terminated abnormally during reboot

To start/stop all the instances on a server, I created a script named dbss (database start/stop) and...
10/06/2018 Linux 793 views Comment
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du: option requires an argument — ‘X’

Several days ago I encountered this little issue and I found it was very interesting. :) I got a cap...
03/06/2018 Linux 283 views Comment
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How to create udev rules of storage devices for ASM usage

When I install the Grid Infrastructure(GI), usually I need to configure the udev rule for the storag...
21/05/2018 Linux 553 views Comment
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Some strange behaviours of parted

Last night when I made partitions of one large 3T flash disk, I got some issues with the parted comm...
16/05/2018 Linux 203 views Comment
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host map: lookup (domain.com): deferred

This was another issue happened several days ago. In our email configuration, there was one central ...
17/04/2018 Linux 687 views Comment
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IP name possibly forged

These days got a sendmail issue and fixed it after some research and tests, and I though it could be...
16/04/2018 Linux 186 views Comment
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