I am trying to run following command on Linux Docker container but I am getting the following error:
root@instance-0024c639:/etc/java-8-openjdk# sed -i s/^assistive_technologies=/#&/ accessibility.properties [1] 1095 sed: -e expression #1, char 28: unterminated `s' command bash: /: Is a directory [1]+ Exit 1 sed -i s/^assistive_technologies=/#
The file content I am running it for:
root@instance-0024c639:/etc/java-8-openjdk# cat accessibility.properties # # The following line specifies the assistive technology classes # that should be loaded into the Java VM when the AWT is initailized. # Specify multiple classes by separating them with commas. # Note: the line below cannot end the file (there must be at # a minimum a blank line following it). # assistive_technologies=org.GNOME.Accessibility.AtkWrapper
I am doing it as suggested at – https://solveme.wordpress.com/2017/07/24/java-awt-awterror-assistive-technology-not-found-org-gnome-accessibility-atkwrapper-when-running-jasper-reports/
Can someone help me with it?
Advertisement
Answer
Just quote the command so & does not have an special meaning for Bash!
sed -i 's/^assistive_technologies=/#&/' accessibility.properties # ^ ^
What is exactly happening here?
As read in man bash:
If a command is terminated by the control operator &, the shell executes the command in the background in a subshell.
Thus, when you say:
sed -i s/^assistive_technologies=/#&/ accessibility.properties
Bash is actually seeing two commands:
sed -i s/^assistive_technologies=/# / accessibility.properties
The first is sent to the background by &, so you get the message:
[1] 1095
Then it evaluates it and determines it is incomplete, so it triggers the error:
sed: -e expression #1, char 28: unterminated `s' command
Finally it shows how the background job has finished:
[1]+ Exit 1 sed -i s/^assistive_technologies=/#
In the meanwhile, it tries to execute the command:
/ accessibility.properties
But fails miserably and hence it returns the error:
bash: /: Is a directory