I have installed Oracle JDK 13 using the .deb file given on their official website .
But when I run the java command, it is showing:
Command 'java' not found, but can be installed with:
sudo apt install default-jre
sudo apt install openjdk-11-jre-headless
What should I do?
I have installed JDK 9, downloaded and extracted and then installed. Now when I am adding the PATH variables in bashrc terminal is showing an error
bash: =/opt/jdk-9.0.1/: No such file or directory
Even though file is present. I have added only these lines
#JAVA_PATH
$JAVA_HOME=/opt/jdk-9.0.1
export PATH=$PATH:$JAVA_HOME/bin
at the end of the bashrc file.
I am using ubuntu 17.10.
I have Ubuntu 16.04 in hp laptop. Few days before my unity launcher and everything disappeared. I have the second account on this PC on which Unity is working perfectly fine. I have tried links such as:
I can use ccsm and it is showing me every option required. And even though I enable Unity plugin and every other option comes for enabling it, but even after the reboot, I can't get my Unity back, and again if I launch ccsm then I can see Unity plugin is unselected. What should I do?
I have dual boot Ubuntu 16.04 recently installed with a username brij created at the time of installation.And I have made a new user work and I have added it to all the groups same as brij i.e.
brij adm cdrom sudo dip plugdev lpadmin sambashare work
I have 3 NTFS partitions.Now if I run command ls -l in /media directory I am getting a output as
total 8
drwxr-x---+ 2 root root 4096 Oct 12 21:55 brij
drwxr-x---+ 5 root root 4096 Oct 12 22:18 work
So from this output, I can easily conclude that this file is owned by group root and user root. And it has also chmod as 750.
But the thing is I can acess this directory and (but I can access brij directory by brij user and work directory by work user). If the user brij don't belongs to the group root, then how can this directory is accessible. Another thing If brij and work belongs to same groups then why work can't access /media/brij directory and brij can't access /media/work directory while they can access their respective directories of their names? Am I missing something?
The output of getfactl is
# file: brij
# owner: root
# group: root
user::rwx
user:brij:r-x
group::---
mask::r-x
other::---
# file: work
# owner: root
# group: root
user::rwx
user:work:r-x
group::---
mask::r-x
other::---
I am unable to install the specific version of MySql 5.5. I am using this guide. When I am trying this command
sudo apt-get install mysql-server-5.5
The output is
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package mysql-server-5.5 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or is only available from another source
However the following packages replace it:
percona-xtradb-cluster-server-5.5:i386 mysql-server-5.6:i386
mariadb-server-5.5:i386 percona-xtradb-cluster-server-5.5 mysql-server-5.6
mariadb-server-5.5 percona-xtradb-cluster-server-5.6:i386
percona-server-server-5.6:i386 mysql-testsuite-5.7:i386
mariadb-server-10.0:i386 percona-xtradb-cluster-server-5.6
percona-server-server-5.6 mysql-testsuite-5.7 mariadb-server-10.0
mysql-server-5.7:i386 mysql-server-5.7 mysql-common
E: Package 'mysql-server-5.5' has no installation candidate
It is mandatory for me to use Mysql-5.5. I have tried other but not get any affirmative results. Please help.
I have dual BOOT Windows 10 & Ubuntu 16.04 in UEFI mode and secure boot off. Due To degrading of my laptop's battery, system shutdowns(not properly but same as if pressing power button for a long time) on low battery without giving warning. Then when i switch on it gives me CMOS error and when i check the bios, the setting changes automatically to default and boot option show legacy mode. Any Solution? Same Happens In windows also.
What is difference Between ls -l & ls -lsr
Both Are Giving Same(nearly the same) output. So what's the difference between the two commands.
I have Sandisk 16 GB and 32 GB Pendrives. I use Win32DiskImager and UniversalUSBInstaller and lili etc for each one 16 and 32 GB pen drives. For 16 GB is working successfully but 32 GB it says unable to find a medium containing a live file system. And this is not happening with me but also to my friends having 32 GB USB. Why is this happening and what is the solution?
I have dual booted Windows 10 and Ubuntu 16.04 in UEFI mode (secure boot off). My time in BIOS is correct.
When I boot into Ubuntu and then boot into Windows 10, it shows the wrong time. I have to correct it manually or by the internet in Windows 10, and when I reboot into Windows 10 then it is not a problem. The clock will show the correct time. And then when I reboot to Linux the clock is correct, but switching back to Windows 10 the clock messes up again.
I'm only granting permission to all to do anything but why does the system crash by giving permissions only? I'm only modifying the permission not changing the files.