So in my while loop I am trying to figure out how to pass in the echo statement into my function bitToSixtyFour as a parameter. It is saying that bitToSixtyFour is not found. Answer As defined the function takes argument $1 from command line : to read from standard input read it would be more efficient to use…
Tag: linux
How to install konsole on Cent OS 7?
I have Cent OS 7. Since konsole tool is in kde package, I’ve installed it: But still konsole isn’t installed. So, how can I install it? Answer You can just install the konsole package. yum provides konsole Will return: konsole-4.10.5-4.el7.x86_64 : KDE Terminal emulator So you just have to install…
Copying a NamedTemporaryFile in Linux results in empty file
I am writing some contents to a tempfile.NamedTemporaryFile in Python 3 under Ubuntu 16.04. Under certain circumstances, I want to copy that file to a different location after the writing is done. The problem is reproduced with the following code: mytest.txt is empty once the execution is over. If I use delet…
Bash: Cut current path until a certain folder
lets say I have three bash files in different directories: If I call $(pwd) I get the path of the current directory. Is there a way to somehow “crop” this path until a certain folder? In the following an example is shown if the certain folder would be called “c”: In the case of script1…
How to ssh.invoke_shell() work under Linux
The problem is that in theory the var channel_data must have and print This: Inted of that, it print this: The host “xxxx@yyyyy~$” it never appeared, so the part of the code when I asked for: It never happened. The only difference from this, to the paramiko librarie example I saw, was that the cod…
What are the total number of users operating in a linux os at a time?
I wanted to know the answer since I couldn’t find it anywhere. Answer It depends on the maximum UID and PID. UIDs are 32 bit, so it can be 4,294,967,296, but PID range is narrower: 2^22, which is exactly: 4,194,304. This is the theoretic maximum; in real world there are some running daemons already, so …
ClassNotFoundException: Didn’t find class “com.xxx.xxx.Application” on path: DexPathList on Linux
I’ve moved from Mac to a linux machine (ubuntu) and and can’t get the previous project running. The project has about 10 modules, and it still works fine on my macbook, but when building on ubuntu (tried clean install on 17.10 2 times, and 16.04 2 times as well) will crash the app on start with th…
Compare multiple columns for each row
Using a csv file, i will like to compare multiple columns to check if all values are the same or not. First row are the headers First column is the label The constant values should be from column 2 to the end ( can be 100 columns ) for the example i put only 8 columns. The purpose is to
port 28060 tcp is related to R?
OS is mint 18.2. subset output of netstat -ltnu is below. sessionInfo() out: R version 3.4.3 (2017-11-30) Platform: x86_64-pc-linux-gnu (64-bit) Running under: Linux Mint 18.2 Matrix products: default BLAS: /usr/lib/libblas/libblas.so.3.6.0 LAPACK: /usr/lib/lapack/liblapack.so.3.6.0 locale: [1] LC_CTYPE=en_CA…
Separate Text file to columns by ;
Please I have a text file separated by spaces. I would like to output it to columns separated by ; example Input I use this code My output Output desired. Appreciate your help. Answer $1=$1 is a trick to rebuild $0 with the new separator OFS=’;’.