Can't remove environmental variable in Ubuntu 18.04
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I have set my environmental variable $JAVA_HOME within the /etc/environment file. Worked like a charm! Now I want to remove it. After removing the line completely from the environment file, then do a reboot, it continues to resolve the path on:
echo $JAVA_HOME
How do I clean that out?
18.04 java environment-variables
edited Apr 6 at 1:31
WinEunuuchs2Unix
48.7k1198187
asked Apr 6 at 1:22
EddiefiggieEddiefiggie
2015
add a comment |
I have set my environmental variable $JAVA_HOME within the /etc/environment file. Worked like a charm! Now I want to remove it. After removing the line completely from the environment file, then do a reboot, it continues to resolve the path on:
echo $JAVA_HOME
How do I clean that out?
18.04 java environment-variables
edited Apr 6 at 1:31
WinEunuuchs2Unix
48.7k1198187
asked Apr 6 at 1:22
EddiefiggieEddiefiggie
2015
Although I posted an answer on how to unset a variable, it appears you might be setting$JAVA_HOMEin more than one place. What does it read when you typeecho $JAVA_HOME?
– WinEunuuchs2Unix
Apr 6 at 1:36
add a comment |
I have set my environmental variable $JAVA_HOME within the /etc/environment file. Worked like a charm! Now I want to remove it. After removing the line completely from the environment file, then do a reboot, it continues to resolve the path on:
echo $JAVA_HOME
How do I clean that out?
18.04 java environment-variables
edited Apr 6 at 1:31
WinEunuuchs2Unix
48.7k1198187
asked Apr 6 at 1:22
EddiefiggieEddiefiggie
2015
I have set my environmental variable $JAVA_HOME within the /etc/environment file. Worked like a charm! Now I want to remove it. After removing the line completely from the environment file, then do a reboot, it continues to resolve the path on:
echo $JAVA_HOME
How do I clean that out?
18.04 java environment-variables
18.04 java environment-variables
edited Apr 6 at 1:31
WinEunuuchs2Unix
48.7k1198187
asked Apr 6 at 1:22
EddiefiggieEddiefiggie
2015
edited Apr 6 at 1:31
WinEunuuchs2Unix
48.7k1198187
asked Apr 6 at 1:22
EddiefiggieEddiefiggie
2015
edited Apr 6 at 1:31
WinEunuuchs2Unix
48.7k1198187
edited Apr 6 at 1:31
WinEunuuchs2Unix
48.7k1198187
edited Apr 6 at 1:31
WinEunuuchs2Unix
48.7k1198187
48.7k1198187
asked Apr 6 at 1:22
EddiefiggieEddiefiggie
2015
asked Apr 6 at 1:22
EddiefiggieEddiefiggie
2015
asked Apr 6 at 1:22
EddiefiggieEddiefiggie
2015
2015
Although I posted an answer on how to unset a variable, it appears you might be setting$JAVA_HOMEin more than one place. What does it read when you typeecho $JAVA_HOME?
– WinEunuuchs2Unix
Apr 6 at 1:36
add a comment |
Although I posted an answer on how to unset a variable, it appears you might be setting$JAVA_HOMEin more than one place. What does it read when you typeecho $JAVA_HOME?
– WinEunuuchs2Unix
Apr 6 at 1:36
Although I posted an answer on how to unset a variable, it appears you might be setting
$JAVA_HOME in more than one place. What does it read when you type echo $JAVA_HOME?– WinEunuuchs2Unix
Apr 6 at 1:36
Although I posted an answer on how to unset a variable, it appears you might be setting
$JAVA_HOME in more than one place. What does it read when you type echo $JAVA_HOME?– WinEunuuchs2Unix
Apr 6 at 1:36
add a comment |
1 Answer
1
active
oldest
votes
$JAVA_HOME will already have a definition on many systems without explicitly declaring it in /etc/environment:
$ echo $JAVA_HOME
/usr/lib/jvm/java-8-oracle
That said, the unset command will eliminate a variable. From: Unix / Linux - Using Shell Variables
Unsetting Variables
Unsetting or deleting a variable directs the shell to remove the
variable from the list of variables that it tracks. Once you unset a
variable, you cannot access the stored value in the variable.
Following is the syntax to unset a defined variable using the unset
command −
unset variable_name
The above command unsets the value of a defined variable. Here is a
simple example that demonstrates how the command works −
#!/bin/sh
NAME="Zara Ali"
unset NAME
echo $NAME
In our case we can use:
$ echo $JAVA_HOME
/usr/lib/jvm/java-8-oracle
───────────────────────────────────────────────────────────────────────────────────────────
$ unset JAVA_HOME
───────────────────────────────────────────────────────────────────────────────────────────
$ echo $JAVA_HOME
───────────────────────────────────────────────────────────────────────────────────────────
$
answered Apr 6 at 1:30
WinEunuuchs2UnixWinEunuuchs2Unix
48.7k1198187
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$JAVA_HOME will already have a definition on many systems without explicitly declaring it in /etc/environment:
$ echo $JAVA_HOME
/usr/lib/jvm/java-8-oracle
That said, the unset command will eliminate a variable. From: Unix / Linux - Using Shell Variables
Unsetting Variables
Unsetting or deleting a variable directs the shell to remove the
variable from the list of variables that it tracks. Once you unset a
variable, you cannot access the stored value in the variable.
Following is the syntax to unset a defined variable using the unset
command −
unset variable_name
The above command unsets the value of a defined variable. Here is a
simple example that demonstrates how the command works −
#!/bin/sh
NAME="Zara Ali"
unset NAME
echo $NAME
In our case we can use:
$ echo $JAVA_HOME
/usr/lib/jvm/java-8-oracle
───────────────────────────────────────────────────────────────────────────────────────────
$ unset JAVA_HOME
───────────────────────────────────────────────────────────────────────────────────────────
$ echo $JAVA_HOME
───────────────────────────────────────────────────────────────────────────────────────────
$
answered Apr 6 at 1:30
WinEunuuchs2UnixWinEunuuchs2Unix
48.7k1198187
add a comment |
$JAVA_HOME will already have a definition on many systems without explicitly declaring it in /etc/environment:
$ echo $JAVA_HOME
/usr/lib/jvm/java-8-oracle
That said, the unset command will eliminate a variable. From: Unix / Linux - Using Shell Variables
Unsetting Variables
Unsetting or deleting a variable directs the shell to remove the
variable from the list of variables that it tracks. Once you unset a
variable, you cannot access the stored value in the variable.
Following is the syntax to unset a defined variable using the unset
command −
unset variable_name
The above command unsets the value of a defined variable. Here is a
simple example that demonstrates how the command works −
#!/bin/sh
NAME="Zara Ali"
unset NAME
echo $NAME
In our case we can use:
$ echo $JAVA_HOME
/usr/lib/jvm/java-8-oracle
───────────────────────────────────────────────────────────────────────────────────────────
$ unset JAVA_HOME
───────────────────────────────────────────────────────────────────────────────────────────
$ echo $JAVA_HOME
───────────────────────────────────────────────────────────────────────────────────────────
$
answered Apr 6 at 1:30
WinEunuuchs2UnixWinEunuuchs2Unix
48.7k1198187
add a comment |
$JAVA_HOME will already have a definition on many systems without explicitly declaring it in /etc/environment:
$ echo $JAVA_HOME
/usr/lib/jvm/java-8-oracle
That said, the unset command will eliminate a variable. From: Unix / Linux - Using Shell Variables
Unsetting Variables
Unsetting or deleting a variable directs the shell to remove the
variable from the list of variables that it tracks. Once you unset a
variable, you cannot access the stored value in the variable.
Following is the syntax to unset a defined variable using the unset
command −
unset variable_name
The above command unsets the value of a defined variable. Here is a
simple example that demonstrates how the command works −
#!/bin/sh
NAME="Zara Ali"
unset NAME
echo $NAME
In our case we can use:
$ echo $JAVA_HOME
/usr/lib/jvm/java-8-oracle
───────────────────────────────────────────────────────────────────────────────────────────
$ unset JAVA_HOME
───────────────────────────────────────────────────────────────────────────────────────────
$ echo $JAVA_HOME
───────────────────────────────────────────────────────────────────────────────────────────
$
answered Apr 6 at 1:30
WinEunuuchs2UnixWinEunuuchs2Unix
48.7k1198187
$JAVA_HOME will already have a definition on many systems without explicitly declaring it in /etc/environment:
$ echo $JAVA_HOME
/usr/lib/jvm/java-8-oracle
That said, the unset command will eliminate a variable. From: Unix / Linux - Using Shell Variables
Unsetting Variables
Unsetting or deleting a variable directs the shell to remove the
variable from the list of variables that it tracks. Once you unset a
variable, you cannot access the stored value in the variable.
Following is the syntax to unset a defined variable using the unset
command −
unset variable_name
The above command unsets the value of a defined variable. Here is a
simple example that demonstrates how the command works −
#!/bin/sh
NAME="Zara Ali"
unset NAME
echo $NAME
In our case we can use:
$ echo $JAVA_HOME
/usr/lib/jvm/java-8-oracle
───────────────────────────────────────────────────────────────────────────────────────────
$ unset JAVA_HOME
───────────────────────────────────────────────────────────────────────────────────────────
$ echo $JAVA_HOME
───────────────────────────────────────────────────────────────────────────────────────────
$
answered Apr 6 at 1:30
WinEunuuchs2UnixWinEunuuchs2Unix
48.7k1198187
edited Apr 6 at 1:36
answered Apr 6 at 1:30
WinEunuuchs2UnixWinEunuuchs2Unix
48.7k1198187
answered Apr 6 at 1:30
WinEunuuchs2UnixWinEunuuchs2Unix
48.7k1198187
answered Apr 6 at 1:30
WinEunuuchs2UnixWinEunuuchs2Unix
48.7k1198187
48.7k1198187
add a comment |
add a comment |
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Although I posted an answer on how to unset a variable, it appears you might be setting
$JAVA_HOMEin more than one place. What does it read when you typeecho $JAVA_HOME?– WinEunuuchs2Unix
Apr 6 at 1:36