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Using semicolon (;) vs plus (+) with exec in find
...ht be best illustrated with an example. Let's say that find turns up these files:
file1
file2
file3
Using -exec with a semicolon (find . -exec ls '{}' \;), will execute
ls file1
ls file2
ls file3
But if you use a plus sign instead (find . -exec ls '{}' \+), as many filenames as possible are...
How do I change the number of open files limit in Linux? [closed]
When running my application I sometimes get an error about too many files open .
4 Answers
...
How do I parse command line arguments in Bash?
...esac
done
set -- "${POSITIONAL[@]}" # restore positional parameters
echo "FILE EXTENSION = ${EXTENSION}"
echo "SEARCH PATH = ${SEARCHPATH}"
echo "LIBRARY PATH = ${LIBPATH}"
echo "DEFAULT = ${DEFAULT}"
echo "Number files in SEARCH PATH with EXTENSION:" $(ls -1 "${SEARCHPATH}"/*."${EX...
sendmail: how to configure sendmail on ubuntu? [closed]
... you should have been prompted to configure sendmail.
For reference, the files that are updated during configuration are located at the following (in case you want to update them manually):
/etc/mail/sendmail.conf
/etc/cron.d/sendmail
/etc/mail/sendmail.mc
You can test sendmail to see if it is ...
Docker build “Could not resolve 'archive.ubuntu.com'” apt-get fails to install anything
I've been trying to run Docker build on various files which previously worked before, which are now no longer working.
14 A...
How to set JAVA_HOME in Linux for all users
...
find /usr/lib/jvm/java-1.x.x-openjdk
vim /etc/profile
Prepend sudo if logged in as not-privileged user, ie. sudo vim
Press 'i' to get in insert mode
add:
export JAVA_HOME="path that you found"
export PATH=$JAVA_HOME/bin:$PATH
logout and login again, reboot, or use sourc...
How to change the port of Tomcat from 8080 to 80?
...directory
e.g. C:\Tomcat 6.0\conf\
2) Edit following tag in server.xml file
<Connector connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443"/>
3) Change the port=8080 value to port=80
4) Save file.
5) Stop your Tomcat and restart it.
...
How to make the tab character 4 spaces instead of 8 spaces in nano?
...ple) it's also a good idea to convert tabs to spaces.
Edit your ~/.nanorc file (or create it) and add:
set tabsize 4
set tabstospaces
If you already got a file with tabs and want to convert them to spaces i recommend the expandcommand (shell):
expand -4 input.py > output.py
...
How to run a shell script at startup
...
In the file you put in /etc/init.d/ you have to set it executable with:
chmod +x /etc/init.d/start_my_app
Thanks to @meetamit, if this does not run you have to create a symlink to /etc/rc.d/
ln -s /etc/init.d/start_my_app /etc/r...
Make $JAVA_HOME easily changable in Ubuntu [closed]
...
Put the environment variables into the global /etc/environment file:
...
export JAVA_HOME=/usr/lib/jvm/java-1.5.0-sun
...
Execute "source /etc/environment" in every shell where you want the variables to be updated:
$ source /etc/environment
Check that it works:
$ echo $JAVA_HOME
$...