I have a file with 3 columns like this I want to swap the entries of the Col1 and Col2 whenever there is in the third column. I want my output file to be like Answer Essentially, if $3==”<-“, then swap the columns and redefine $3. Then print.
Tag: linux
Different node version for different projects, is there a way of telling node which version to use?
I have a pretty common (i guess) problem. Many of my projects utilize nodejs, some for business logic, others only for some building task. I need to have different runtimes in different projects, one of my electron apps requires node 7.10.0, a typical build suite requires node 8.x. Now i know – i can us…
Keep zero after Hexdecimal conversion in bash
I’m writing a very simple script in bash: I want to print all numbers with minimum three digits as 000, 001, 002 .. until 099. With integer numbers it works good, but after obase = 16; $ i ‘| bcs number return with one or two digits. How can I solve it in the easiest way? Answer You might want
Running out of space on Linux, copying 12GB of files to a 15GB file system
I have two virtual Linux servers, one for development and one in production, a typical setup one would expect. On the development server I have files that I need to copy to the production server, that amount to 12GB, well according to the “du -h” command. The production server has 15GB free, accor…
How to manually clean up conda in my home directory?
I use Anaconda in my computer to handle my python versions and environments. The location of the Anaconda installation (and consequently the default location for newly created environments) is /opt/anaconda3/. I have two custom environments that I have created – envA and envB. envA is present in /opt/an…
Linux randomly deleted my file while compiling what do I do?
This is my error code. prog3.c is nowhere to be found, what on earth happened is there any way to get my file back?? The bold is the command I ran and the rest is the resultant console output Answer Your problem is here: -o prog3.c. gcc’s -o option is used to tell gcc which name it should give to
Create debian package from source file with multiple binaries
I have a C/C++ am autoconf source package for Linux that consist of several binaries, logical in development as many of them share the same source. Some binaries run in a graphical environment, some are server components, some drivers for the server, libs and others are shell commands. I would like to make a …
ffmpeg img to video = Could find no file with path
i try to convert img to mp4 with ffmpeg. i try to do it like this: and get an error: The jpg file-name format is: anyone can help, where is mistake?… Thanks! Answer To match all jpg files in /tmp/stream use: For more specificity use additional glob patterns. For example, if you only want images from 201…
Django – Celery 4.1 with django-celery-beat/rabbitmq : Nothing?
I followed the tutorial on http://docs.celeryproject.org/en/latest/ and I am on virtualbox (Xubuntu 16.XX TLS), Django 1.11.3, Celery 4.1 . rabbitmq 3.6.14, Python 2.7 . and when I started the daemonization with the init-script: celerybeat (with /etc/default/celeryd config file) [2017-11-19 01:13:00,912: INFO…
How to change *** to textbf with sed
I export results from my analysis into a table in Latex. I would like to be able to change all coefficients that are significant to ***, **, * to bold face text textbf. This requires me to search with sed and change the stars to wrap around the coefficient. I want to change 0.047$^{***}$ to textbf{0.047} I…