How to Resolve dd: invalid number
dd: invalid number: ‘1m’ Tried to replicate a partition to another with dd, but it failed with dd: invalid number. Here I initially use 1g… Read More »How to Resolve dd: invalid number
Linux
How to Upgrade Enterprise Linux from 7.x to 7.9
Upgrading from Enterprise Linux 7.x (EL7) to the latest release 7.9 within a major version could be easy as long as the yum repository is… Read More »How to Upgrade Enterprise Linux from 7.x to 7.9
How Linux Set Time Zone
If you found the current time zone is not accurate after checking OS current time zone in Linux, you might like to change it. Here… Read More »How Linux Set Time Zone
How Linux Check Time Zone
Linux Time Zone We use command timedatectl to know current time zone in Linux. [root@test ~]# timedatectl | grep "Time zone" … Read More »How Linux Check Time Zone
Linux Time Zones All Available List
Linux Time Zones To know all valid time zones in Linux, we use command timedatectl. You may press Ctrl + d to bookmark this page.… Read More »Linux Time Zones All Available List
How to Fix Garbled Filename and Text
There're several ways to display your garbled filename correctly. LANG Environment Variable PuTTY Character Set Rename Badly Encoded Filename A. LANG Environment Variable Tried to… Read More »How to Fix Garbled Filename and Text
How to Resolve ORA-12535: TNS:operation timed out
ORA-12535 and TNS-12535 ORA-12535 is the same as TNS-12535, they all indicate that the connection between the client and the listener has been timed out.… Read More »How to Resolve ORA-12535: TNS:operation timed out
How to Change Primary Group of a User
Change Primary Group In our case, there's a user called oracle who has identification like following: [root@test ~]# id oracle uid=54321(oracle) gid=54321(oinstall) groups=54321(oinstall),54322(dba) I would… Read More »How to Change Primary Group of a User
How to Resolve Configure: Error: no acceptable C compiler found in $PATH
Python Installation Tried to install python 3.7.1 in Linux and met this error: "configure: error: no acceptable C compiler found in $PATH". No doubt, this… Read More »How to Resolve Configure: Error: no acceptable C compiler found in $PATH
How to Mount an Uploaded ISO file in Linux
If you were limited to access /dev/cdrom, you can still utilize the content of an ISO by uploading and mounting it. The syntax is as… Read More »How to Mount an Uploaded ISO file in Linux