I’m working on a script that uses the embedded shelling capabilities of IPython and as a requirement, it has to log all the data from stdin/stdout into a file. For this reason I decided to write wrappers for them; however, after switching out the streams my embedded IPython shell loses its auto completi…
Python – Crontab script not showing Pillow Images
My crontab is In new.sh I have In new.py I open images with the Pillow module and play music, but when I boot it only plays the music. Any help is appreciated. EDIT: The music plays perfectly. Edit: The shell script runs it fine in terminal. ANSWERED! Answer In the bash script, write export DISPLAY=”:0.…
How to remove only the last word from a file
I created the following Perl one-liner in order to remove a word from a file This Perl also escapes special characters such as @ or $ or *, so every word that contains a special character will removed from the file. How to change the Perl syntax in order to delete only the last matched word from a file and
How do I find imagemagick temp folder in linux?
I am new to Imagemagick and linux. How do I find temp folder of in linux. I am using Imagemagick with liferay. Answer The easiest way, is to look for any environment variables that you have set, e.g.: MAGICK_TEMPORARY_PATH MAGICK_TMPDIR by running: Else, if you haven’t set any environment variable, do s…
Understanding software parallelization on a linux workstation
Summary I am trying to understand the limits of my compute resources when performing multiple simulations. My task is trivial in terms of parallelisation – I need to run a large number of simple independent simulations, i.e. each simulation program does not rely on another for information. Each simulati…
linux sed reads whole file when only editing first line
I am currently working with CSV files that can be 10’s of GB in size, and need to edit the headers dynamically depending on the use case. For this I am using: which has the desired effect of only editing the headers, but can take upwards of 10 seconds to complete. I imagine this is because the whole fil…
Docker container: lsmod not found
How can I get lsmod and modprobe installed in Ubuntu 14 that is running on Docker? I need to install a device driver in the container, but first I need these commands. (The docker image is originally from docker hub, from a tomcat:7 image). Answer Based on comment from @lan-Abbott. Problem is solved.
Glassfish is not working on ReadHat Server
I am trying to install Glassfish 4.0 on a Linux Red Hat Entreprise Linux release 5.11 (Tikanga) Server. Therefore, I successfully installed Java jdk1.7.0_79 and NetBeans 4.0 on this server following this website instructions: https://blog.idrsolutions.com/2014/02/tutorial-setting-up-glassfish-on-a-linux-serve…
What is the cause of the difference in return value between Linux and Windows and how to fix it?
Here is the code that I tried to return an object of a class. but I got different results from CentOs (gcc) and visual studio 2013. In the cls.cpp, with gcc, it works well, I get the results such as detector.name = “t_name”, detector.stride = 5. but the values in the detector are “” an…
Gnu sort: stray characters in field specification
sort doesn’t seem to like my key specification. Why? From the man page: -k, –key=KEYDEF : sort via a key; KEYDEF gives location and type KEYDEF is F[.C][OPTS][,F[.C][OPTS]] for start and stop position, where F is a field number and C a character position in the field; both are origin 1, and the st…