[SOLVED] CLASSPATH error after configuring JAVA Environment

SINISTER750 · 10-26-2020, 01:47 PM

Quote:

Originally Posted by pan64

pathappend and pathprepend will not check the variable (that is made by the shell itself), but the value[s] passed to these functions. So for example in case of: pathappend /this/is/a/non/existent/dir the function will do nothing, will silently ignore it.
So creating these variables are not enough, those directories must be created before invoking pathappend.

I deleted everything at started again. Beforehand I also created /usr/share/java as suggested before that I have to create it myself but the problem still persists.

bash: ${AUTO_CLASSPATH_DIR}: invalid variable name

As soon as I did: source /etc/profile.d/openjdk.sh

pan64 · 10-26-2020, 01:50 PM

ok, that was more or less expected.
What I can suggest you: execute bash -xv /etc/profile.d/openjdk.sh and post the full output without modification

SINISTER750 · 10-26-2020, 01:54 PM

Quote:

Originally Posted by pan64

ok, that was more or less expected.
What I can suggest you: execute bash -xv /etc/profile.d/openjdk.sh and post the full output without modification

I am doing this on the host machine itself due to hardware limitations so I don't know anyway to view the full output as there is no GUI or scroll bar. Can I send as much as I can see on the screen or is there any other way?

pan64 · 10-26-2020, 01:56 PM

you do not need gui.

Code:

bash -xv  /etc/profile.d/openjdk.sh >/tmp/file 2>&1

will write the output into /tmp/file and you can copy it anywhere. You can safely post a few lines here, but if it was more than 100 lines you can use pastebin (for example).

SINISTER750 · 10-26-2020, 03:02 PM

Quote:

Originally Posted by pan64

you do not need gui.

Code:

bash -xv  /etc/profile.d/openjdk.sh >/tmp/file 2>&1

will write the output into /tmp/file and you can copy it anywhere. You can safely post a few lines here, but if it was more than 100 lines you can use pastebin (for example).

Code:

pathappend () { pathremove $1 $2;
local PATHVARIABLE=${2:-PATH};
export $PATHVARIABLE="${!PATHVARIABLE:+${!PATHVARIABLE}:}$1"
}
pathprepend () { pathremove $1 $2;
local PATHVARIABLE=${2:-PATH};
export $PATHVARIABLE="$1${!PATHVARIABLE:+:${!PATHVARIABLE}}"
}
pathremove () { local IFS=':';
local NEWPATH;
local DIR;
local PATHVARIABLE=${2:-PATH};
for DIR in ${!PATHVARIABLE};
do
if [ "$DIR" != "$1" ]; then
NEWPATH=${NEWPATH:+$NEWPATH:}$DIR;
fi;
done;
export $PATHVARIABLE="$NEWPATH"
}
# Begin /etc/profile.d/openjdk.sh

# Set JAVA_HOME directory
JAVA_HOME=/opt/jdk
+ JAVA_HOME=/opt/jdk

# Adjust PATH
pathappend $JAVA_HOME/bin
+ pathappend /opt/jdk/bin
+ pathremove /opt/jdk/bin
+ local IFS=:
+ local NEWPATH
+ local DIR
+ local PATHVARIABLE=PATH
+ for DIR in ${!PATHVARIABLE}
+ '[' /bin '!=' /opt/jdk/bin ']'
+ NEWPATH=/bin
+ for DIR in ${!PATHVARIABLE}
+ '[' /usr/bin '!=' /opt/jdk/bin ']'
+ NEWPATH=/bin:/usr/bin
+ for DIR in ${!PATHVARIABLE}
+ '[' /opt/jdk/bin '!=' /opt/jdk/bin ']'
+ export PATH=/bin:/usr/bin
+ PATH=/bin:/usr/bin
+ local PATHVARIABLE=PATH
+ export PATH=/bin:/usr/bin:/opt/jdk/bin
+ PATH=/bin:/usr/bin:/opt/jdk/bin

# Add to MANPATH
pathappend $JAVA_HOME/man MANPATH
+ pathappend /opt/jdk/man MANPATH
+ pathremove /opt/jdk/man MANPATH
+ local IFS=:
+ local NEWPATH
+ local DIR
+ local PATHVARIABLE=MANPATH
+ for DIR in ${!PATHVARIABLE}
+ '[' /usr/share/man '!=' /opt/jdk/man ']'
+ NEWPATH=/usr/share/man
+ for DIR in ${!PATHVARIABLE}
+ '[' opt/jdk/man '!=' /opt/jdk/man ']'
+ export MANPATH=/usr/share/man
+ MANPATH=/usr/share/man
+ local PATHVARIABLE=MANPATH
+ export MANPATH=/usr/share/man:/opt/jdk/man
+ MANPATH=/usr/share/man:/opt/jdk/man

# Auto Java CLASSPATH: Copy jar files to, or create symlinks in, the
# /usr/share/java directory. Note that having gcj jars with OpenJDK 8
# may lead to errors.

AUTO_CLASSPATH_DIR=/usr/share/java
+ AUTO_CLASSPATH_DIR=/usr/share/java

pathprepend . CLASSPATH
+ pathprepend . CLASSPATH
+ pathremove . CLASSPATH
+ local IFS=:
+ local NEWPATH
+ local DIR
+ local PATHVARIABLE=CLASSPATH
+ for DIR in ${!PATHVARIABLE}
+ '[' . '!=' . ']'
+ export CLASSPATH=
+ CLASSPATH=
+ local PATHVARIABLE=CLASSPATH
+ export CLASSPATH=.
+ CLASSPATH=.


for dir in `find ${AUTO_CLASSPATH_DIR} -type d 2>/dev/null`; do
pathappend $dir CLASSPATH
done
+ for dir in `find ${AUTO_CLASSPATH_DIR} -type d 2>/dev/null`
+ pathappend find '${AUTO_CLASSPATH_DIR}' -type d '2>/dev/null` CLASSPATH
+ pathremove find '${AUTO_CLASSPATH_DIR}'
+ local IFS=:
+ local NEWPATH
+ local DIR
+ local 'PATHVARIABLE=${AUTO_CLASSPATH_DIR}'
environment: line 4: ${AUTO_CLASSPATH_DIR}: invalid variable name

for jar in `find ${AUTO_CLASSPATH_DIR} -name "*.jar" 2>/dev/null`; do
pathappend $jar CLASSPATH
done
+ for jar in `find ${AUTO_CLASSPATH_DIR} -name "*.jar" 2>/dev/null`
+ pathappend find '${AUTO_CLASSPATH_DIR}' -name '"*.jar"' '2>/dev/null` CLASSPATH
+ pathremove find '${AUTO_CLASSPATH_DIR}'
+ local IFS=:
+ local NEWPATH
+ local DIR
+ local 'PATHVARIABLE=${AUTO_CLASSPATH_DIR}'
environment: line 4: ${AUTO_CLASSPATH_DIR}: invalid variable name

export JAVA_HOME
+ export JAVA_HOME
unset AUTO_CLASSPATH_DIR dir jar
+ unset AUTO_CLASSPATH_DIR dir jar

# End /etc/profile.d/openjdk.sh

SINISTER750 · 10-26-2020, 03:25 PM

Quote:

Originally Posted by SINISTER750

Code:

pathappend () { pathremove $1 $2;
local PATHVARIABLE=${2:-PATH};
export $PATHVARIABLE="${!PATHVARIABLE:+${!PATHVARIABLE}:}$1"
}
pathprepend () { pathremove $1 $2;
local PATHVARIABLE=${2:-PATH};
export $PATHVARIABLE="$1${!PATHVARIABLE:+:${!PATHVARIABLE}}"
}
pathremove () { local IFS=':';
local NEWPATH;
local DIR;
local PATHVARIABLE=${2:-PATH};
for DIR in ${!PATHVARIABLE};
do
if [ "$DIR" != "$1" ]; then
NEWPATH=${NEWPATH:+$NEWPATH:}$DIR;
fi;
done;
export $PATHVARIABLE="$NEWPATH"
}
# Begin /etc/profile.d/openjdk.sh

# Set JAVA_HOME directory
JAVA_HOME=/opt/jdk
+ JAVA_HOME=/opt/jdk

# Adjust PATH
pathappend $JAVA_HOME/bin
+ pathappend /opt/jdk/bin
+ pathremove /opt/jdk/bin
+ local IFS=:
+ local NEWPATH
+ local DIR
+ local PATHVARIABLE=PATH
+ for DIR in ${!PATHVARIABLE}
+ '[' /bin '!=' /opt/jdk/bin ']'
+ NEWPATH=/bin
+ for DIR in ${!PATHVARIABLE}
+ '[' /usr/bin '!=' /opt/jdk/bin ']'
+ NEWPATH=/bin:/usr/bin
+ for DIR in ${!PATHVARIABLE}
+ '[' /opt/jdk/bin '!=' /opt/jdk/bin ']'
+ export PATH=/bin:/usr/bin
+ PATH=/bin:/usr/bin
+ local PATHVARIABLE=PATH
+ export PATH=/bin:/usr/bin:/opt/jdk/bin
+ PATH=/bin:/usr/bin:/opt/jdk/bin

# Add to MANPATH
pathappend $JAVA_HOME/man MANPATH
+ pathappend /opt/jdk/man MANPATH
+ pathremove /opt/jdk/man MANPATH
+ local IFS=:
+ local NEWPATH
+ local DIR
+ local PATHVARIABLE=MANPATH
+ for DIR in ${!PATHVARIABLE}
+ '[' /usr/share/man '!=' /opt/jdk/man ']'
+ NEWPATH=/usr/share/man
+ for DIR in ${!PATHVARIABLE}
+ '[' opt/jdk/man '!=' /opt/jdk/man ']'
+ export MANPATH=/usr/share/man
+ MANPATH=/usr/share/man
+ local PATHVARIABLE=MANPATH
+ export MANPATH=/usr/share/man:/opt/jdk/man
+ MANPATH=/usr/share/man:/opt/jdk/man

# Auto Java CLASSPATH: Copy jar files to, or create symlinks in, the
# /usr/share/java directory. Note that having gcj jars with OpenJDK 8
# may lead to errors.

AUTO_CLASSPATH_DIR=/usr/share/java
+ AUTO_CLASSPATH_DIR=/usr/share/java

pathprepend . CLASSPATH
+ pathprepend . CLASSPATH
+ pathremove . CLASSPATH
+ local IFS=:
+ local NEWPATH
+ local DIR
+ local PATHVARIABLE=CLASSPATH
+ for DIR in ${!PATHVARIABLE}
+ '[' . '!=' . ']'
+ export CLASSPATH=
+ CLASSPATH=
+ local PATHVARIABLE=CLASSPATH
+ export CLASSPATH=.
+ CLASSPATH=.


for dir in `find ${AUTO_CLASSPATH_DIR} -type d 2>/dev/null`; do
pathappend $dir CLASSPATH
done
+ for dir in `find ${AUTO_CLASSPATH_DIR} -type d 2>/dev/null`
+ pathappend find '${AUTO_CLASSPATH_DIR}' -type d '2>/dev/null` CLASSPATH
+ pathremove find '${AUTO_CLASSPATH_DIR}'
+ local IFS=:
+ local NEWPATH
+ local DIR
+ local 'PATHVARIABLE=${AUTO_CLASSPATH_DIR}'
environment: line 4: ${AUTO_CLASSPATH_DIR}: invalid variable name

for jar in `find ${AUTO_CLASSPATH_DIR} -name "*.jar" 2>/dev/null`; do
pathappend $jar CLASSPATH
done
+ for jar in `find ${AUTO_CLASSPATH_DIR} -name "*.jar" 2>/dev/null`
+ pathappend find '${AUTO_CLASSPATH_DIR}' -name '"*.jar"' '2>/dev/null` CLASSPATH
+ pathremove find '${AUTO_CLASSPATH_DIR}'
+ local IFS=:
+ local NEWPATH
+ local DIR
+ local 'PATHVARIABLE=${AUTO_CLASSPATH_DIR}'
environment: line 4: ${AUTO_CLASSPATH_DIR}: invalid variable name

export JAVA_HOME
+ export JAVA_HOME
unset AUTO_CLASSPATH_DIR dir jar
+ unset AUTO_CLASSPATH_DIR dir jar

# End /etc/profile.d/openjdk.sh

Though I had to type this all but I've checked it thoroughly, so there shouldn't be any mistakes. Here also it's written that variable name is invalid

pan64 · 10-27-2020, 02:38 AM

there is an error in this line (several times).

Code:

for dir in `find ${AUTO_CLASSPATH_DIR} -type d 2>/dev/null`; do

this find command should have been executed and returned a list of directories, and in the next line

Code:

pathappend find '${AUTO_CLASSPATH_DIR}' -type d '2>/dev/null` CLASSPATH

instead of the command itself the directory name should be used, like:

Code:

pathappend /usr/share/java/dir1 CLASSPATH
pathappend /usr/share/java/dir2/dir3 CLASSPATH
....

but something different happened.
I don't know why, probably it is not bash but another shell which does not understand that backtick... or it is not a real backtick, but something else???

SINISTER750 · 10-27-2020, 04:28 AM

Quote:

Originally Posted by pan64

there is an error in this line (several times).

Code:

for dir in `find ${AUTO_CLASSPATH_DIR} -type d 2>/dev/null`; do

this find command should have been executed and returned a list of directories, and in the next line

Code:

pathappend find '${AUTO_CLASSPATH_DIR}' -type d '2>/dev/null` CLASSPATH

instead of the command itself the directory name should be used, like:

Code:

pathappend /usr/share/java/dir1 CLASSPATH
pathappend /usr/share/java/dir2/dir3 CLASSPATH
....

but something different happened.
I don't know why, probably it is not bash but another shell which does not understand that backtick... or it is not a real backtick, but something else???

Well, I checked the lines where the errors were found and they are no different than the output.
I'm using bash 5.0 as it is needed for BLFS 8.4

SINISTER750 · 10-27-2020, 04:31 AM

Quote:

Originally Posted by SINISTER750

Well, I checked the lines where the errors were found and they are no different than the output.
I'm using bash 5.0 as it is needed for BLFS 8.4

Any suggestions please!

pan64 · 10-27-2020, 04:40 AM

Quote:

Originally Posted by SINISTER750

Well, I checked the lines where the errors were found and they are no different than the output.

I don't understand it

Quote:

Originally Posted by SINISTER750

I'm using bash 5.0 as it is needed for BLFS 8.4

bash 5.0 should be ok.
I have no any idea why was that backtick not handled properly. Maybe you can replace it: $(find ..... 2>/dev/null)

SINISTER750 · 10-27-2020, 09:22 AM

Quote:

Originally Posted by pan64

I don't understand it

bash 5.0 should be ok.
I have no any idea why was that backtick not handled properly. Maybe you can replace it: $(find ..... 2>/dev/null)

Someone suggested to me that the variable export syntax is

export PATHVARIABLE=value
(Not)
export $PATHVARIABLE=value

I should omit the $ sign.
but how can I change the output file? Will it make any difference? Do I have to make changes in the configuration file? If so then how can the BLFS book can go wrong?

pan64 · 10-27-2020, 09:39 AM

yes, in general export PATHVARIABLE=value should be used, but this is a special case and export $PATHVARIABLE=value is correct.

SINISTER750 · 10-27-2020, 09:55 AM

Quote:

Originally Posted by pan64

yes, in general export PATHVARIABLE=value should be used, but this is a special case and export $PATHVARIABLE=value is correct.

Could there be something wrong in the bash shell startup files when I created them? Because the Java configuration script needs it.

pan64 · 10-27-2020, 10:03 AM

as I wrote (in post #22) the backticks are not evaluated properly. I have no idea why. Probably because they are not real backticks.
you can try some simple scripts, like:

Code:

AUTO_CLASSPATH_DIR=/usr/share/java
for dir in `find ${AUTO_CLASSPATH_DIR} -type d 2>/dev/null`; do
    echo "xxx${dir}yyy"
done

to check what's going on

SINISTER750 · 10-27-2020, 10:09 AM

Quote:

Originally Posted by pan64

as I wrote (in post #22) the backticks are not evaluated properly. I have no idea why. Probably because they are not real backticks.
you can try some simple scripts, like:

Code:

AUTO_CLASSPATH_DIR=/usr/share/java
for dir in `find ${AUTO_CLASSPATH_DIR} -type d 2>/dev/null`; do
    echo "xxx${dir}yyy"
done

to check what's going on

No good. I changed the script but again the same thing when I rebooted. No sorry! When I again checked it, no changes were made don't know why. I wasn't root.