piping Questions
3
Solved
It seems that newer versions of bash have the &> operator, which (if I understand correctly), redirects both stdout and stderr to a file (&>> appends to the file instead, as Adrian...
4
Solved
I would like to understand why, in the the dplyr or magrittr package, and more specifically the chaining function %>% has some trouble with the basic operators +, -, *, and /
Chaining takes the...
2
Solved
This is somewhat simple, I presume, but still I cannot figure out how to do it. I have the following function defined:
date +%Y-%m-%d_%H:%M | xclip -selection c
which gets a timestamp and puts i...
4
Solved
I want to use some useful functions as commands. For that I am testing the click library. I defined my three original functions then decorated as click.command:
import click
import os, sys
@click...
Lying asked 17/10, 2016 at 16:28
5
Solved
I am writing a shell script to put data into hadoop as soon as they are generated. I can ssh to my master node, copy the files to a folder over there and then put them into hadoop. I am looking for...
2
Solved
Is it possible to run a t.test from piping operators?
I tried to find the answer to this, but most of the questions around this topic look at doing many tests on the same dataset.
I've looked a bro...
5
Solved
I have written a program which writes a list of data to a '.dat' file with the intention of then plotting it separately using gnuplot. Is there a way of making my code plot it automatically? My out...
Eyehole asked 19/8, 2010 at 11:18
3
Solved
Depending on command-line arguments, I'm setting a file pointer to point either towards a specified file or stdin (for the purpose of piping). I then pass this pointer around to a number of differe...
2
Solved
I am new to dplyr() package and trying to use it for my visualization assignment. I am able to pipe my data to ggplot() but unable to do that with plot(). I came across this post and the answers in...
4
Solved
In the OSX terminal :
du -h | sort -nr
-bash: sort: command not found
which sort
/usr/bin/sort
The weird thing is: I tried reproducing the error and it seems to be totally random. My PATH echo...
2
Solved
I am attempting to exclusively use piping to rewrite the following code (using babynames data from babynames package:
library(babynames)
library(dplyr)
myDF <- babynames %>%
group_by(year)...
1
Solved
I'm working on a server and to show detailed GPU information I use these commands:
nvidia-smi
ps -up `nvidia-smi |tail -n +16 | head -n -1 | sed 's/\s\s*/ /g' | cut -d' ' -f3`
However as you ca...
1
Solved
How do I subset a vector for elements that do not contain a word in a piped operation? (I'm really into piping)
I'm hoping there's some way to invert str_subset. In the following example, I'd like...
1
Solved
Why do the uppercase/lowercase pipes exist in Angular?
Any situation I can think of that they would be used for you could just use the below CSS instead:
text-transform: uppercase|lowercase
Any...
1
I am trying to convert a p12 to a pem from a shell script without any user input.
I can have the password as a variable within the script.
so when I call:
openssl pkcs12 -in *.p12 -out cert.pem ...
1
Solved
I have a python script that needs to output some values to stdin and copies another string to clipboard. I'm using the module subprocess to execute the xclip utility through Popen something like th...
Gwin asked 14/6, 2017 at 19:50
2
Solved
I want to create a batch file thats start cygwin and executes a specific command (The command is to read a bash file and executes some command inside it).
This is the batch file that I have devel...
Handgun asked 7/4, 2017 at 5:8
3
Solved
I rarely have this struggle nowadays with F#, but then again type inheritance is much less common with F#, so perhaps I was just lucky. Or I am missing the obvious. Normally when the compiler compl...
Mikelmikell asked 25/10, 2016 at 10:28
1
I have a requirement in which I have to run a Windows batch file using Apache Spark on multiple nodes of the Spark cluster.
So is it possible to do the same using Piping concept of Apache Spark?
...
Gingham asked 15/9, 2016 at 4:38
2
Solved
Admittedly, I am unsure whether I am correctly comparing apples with apples or apples with pears here. But I'm particularly surprised about the bigness of the difference, where a slighter differenc...
Doering asked 6/9, 2016 at 12:54
4
Solved
I've been trying to read input into environment variables from program output like this:
echo first second | read A B ; echo $A-$B
And the result is:
-
Both A and B are always empty. I...
Equiprobable asked 7/12, 2012 at 13:20
2
Solved
cowsay is a silly linux tool for displaying a cow saying given text in the terminal.
$ cowsay hello
fortune is a silly linux too for displaying a "random" quote in the terminal.
$ fortune
Bot...
1
Solved
I am looking to write console based programs in python that can execute functions to perform generic tasks, pretty generic. Is it possible to capture everything written to the console by print call...
2
Solved
I know with my cPanel hosting I can pipe an email inbox to a script, but what I want to do is:
Send to [email protected]
Pipe to mail.php
mail.php reads the subject, and a .txt attachment
Th...
3
Solved
I am calling a perl script on an external txt files from python, and printing the output to an outfile. But instead I want to pipe the output to unix's sort. Right now I am not piping, but are writ...
Jacquelynnjacquenetta asked 11/3, 2015 at 19:7
1 Next >
© 2022 - 2024 — McMap. All rights reserved.