My PATH environment variable right now is:
./subTmp:/usr/local/bin
How do I remove the ./subTmp part from it?
Thanks.
The details vary a bit by installation and by local custom, but generally you have a file named either .profile, .login, or .bashrc in your home directory that contains a line something like
PATH = ./subTmp:/usr/local/bin
Just edit it to be whatever you need.
this should do
export PATH=/usr/local/bin
Related
I need to write out a file to a certain path that contains a special character in R. the path is something like this: C:/Users/Technology ＆ Innovation/Webscraping files/US_data/data
It works totally fine when I access this path through python, but I cannot access the same path in R. And I cannot change this path name or remove '＆' as this path is used by a lot of people. Does anyone have a good idea on how to solve it?
I found out it is '＆' which has subtle difference from '&' that we usually type in through English Keyboard. May be that's the reason causing the problem?
Here is what I have tried:
write.csv(df, 'C:/Users/Technology ＆ Innovation/Webscraping files/US_data/data/file.csv').
write.csv(df, 'C:\\Users\\Technology ＆ Innovation\\Webscraping files\\US_data/data/file.csv')
Not matter whether I try to read or write a file, it is not working in my case.
I also tried reset the working directory path and got the error message:
Error in setwd("C:/Users/Technology & Innovation/Webscraping files/US_data/data") : cannot change working directory
Write it like this
C:\\Users\\Technology ＆ Innovation\\Webscraping files\\US_data\\data
also, you can change your current directory.
Changing your current directory will help you because you can write read.csv("filename.csv") or write.csv(name_of_file, "filename.csv") as it is without mentioning path.
If you have to write a file you have to use syntax properly.
write.csv(C:\\Users\\Technology ＆ Innovation\\Webscraping files\\US_data\\data,"filename.csv")
I am setting a project path to some env variable like PROJECT_HOME by us using os.environ like this:
os.environ['PROJECT_HOME'] = os.getcwd()
so I can use %cd $PROJECT_HOME/abc/xyz in later cell
However, the system return this:
[Errno 2] No such file or directory: '${PROJECT_HOME}/abc/xyz'
Is there a way to use env variable in %cd?
This works for me: %cd {os.environ['PROJECT_HOME']}
I just realized the magic %cd could access python variable. Therefore it could be done like this:
import os
PROJECT_HOME = os.getcwd()
%cd {PROJECT_HOME}
Having said that, the answer by Daniel is the right answer to the question because I asked how to %cd a path containing an environment variable.
Right now I'm trying to create wallet for TON.
I downloaded and built Fift interpreter an was trying to create new wallet with: ./crypto/fift new-walelt.fif
[ 1][t 0][1559491459.312618017][fift-main.cpp:147] Error interpreting standard preamble file `Fift.fif`: cannot locate file `Fift.fif`
Check that correct include path is set by -I or by FIFTPATH environment variable, or disable standard preamble by -n.
Although my path variable is set. Could anyone please help me with this?
First, locate {{lite-client-source-direcotry}}/crypto/fift
This is not the build directory, that's the directory where are the source files (lite-client that you downloaded). So verify you have that it contains Fift.fif file.
If you installed it in the user working directory, it should be:
~/lite-client/crypto/fift/
Now, you should either set FIFTPATH variable to point to this directory or run fift with -I option:
export FIFTPATH=~/lite-client/crypto/fift/
./crypto/fift new-walelt.fif
Or
./crypto/fift -I~/lite-client/crypto/fift/ new-walelt.fif
Have you tried ./crypto/fift -I<source-directory>/crypto/fift new-wallet.fif instead of setting environment variable? Are Fift.fif and Asm.fif library files inside FIFTPATH?
Make sure you have followed all the instruction written here:
https://test.ton.org/HOWTO.txt
It should work if you do all the above instruction correctly. If not, it might be a bug. Remember that TON is in a very early beta strage. You can submit the issue here:
https://github.com/copperbits/TON/issues
You also can use this:
cd ~/liteclient-build
crypto/fift -I/root/lite-client/crypto/fift/lib -s /root/lite-client/crypto/smartcont/new-wallet.fif -1 wallet_name
Try this (worked for me)
export FIFTPATH=~/lite-client/crypto/fift/lib
./crypto/fift new-wallet.fif
I really would like to know how to change directory to the next file, using 2 dots (/..).
I can go back to previous directory but how to do something like that to go to the next directory WITHOUT THE NAME OF THE FILE PLEASE!
I know it is possbile with the name of the folder but my answer is different, please let me know.
What O.S are you using? In linux ubuntu/Debian distributions (and probably in windows, not sure), you can enter the first child directory by simply typingcd */, this will change your current directory to the first child directory available in alphabetical order, example:
-/home
-alan
-desktop
-music
-alex
-documents
-pictures
-lisa
Assuming your in /home, if you write cd */ in the terminal you will be in /home/alan, because -alan is the first folder/directory available.
This is really a newbie question - but basically, how do I enable a template for certain filetypes.
Basically, I just want the template to insert a header of sorts, that is with some functions that I find useful, and libraries loaded etc.
I interpret
:help template
the way that I should place this in my vimrc
au BufNewFile,BufRead ~/.vim/skeleton.R
Running a R script then shows that something could happen, but apparently does not:
--- Auto-Commands ---
This may be because a template consists of commands (and there are no such in skeleton.R) - and in this case I just want it to insert a text header (which skelton.R consist of).
Sorry if this question is mind boggeling stupid ;-/
The command that you've suggested is not going to work: what this will do is run no Vim command whenever you open ~/.vim/skeleton.R
A crude way of achieving what you want would be to use:
:au BufNewFile *.R r ~/.vim/skeleton.R
This will read (:r) your file whenever a new *.R file is created. You want to avoid having BufRead in the autocmd, or it will read the skeleton file into your working file every time you open the file!
There are many plugins that add a lot more control to this process. Being the author and therefore completely biased, I'd recommend this one, but there are plenty of others listed here.
Shameless plug:
They all work in a relatively similar way, but to explain my script:
You install the plugin as described on the linked page and then create some templates in ~/.vim/templates. These templates should have the same extension as the 'target' file, so if it's a template for .R files, call it something like skeleton.R. In your .vimrc, add something like this:
let g:file_template_default = {}
let g:file_template_default['R'] = 'skeleton'
Then create your new .R file (with a filename, so save it if it's new) and enter:
:LoadFileTemplate
You can also skip the .vimrc editing and just do:
:LoadFileTemplate skeleton
See the website for more details.
Assume that your skeletons are in your ~/.vim/templates/ directory, you can put this
snippet in your vimrc file.
augroup templates
au!
" read in templates files
autocmd BufNewFile *.* silent! execute '0r ~/.vim/templates/skeleton.'.expand("<afile>:e")
augroup END
Some explanation,
BufNewFile . = each time we edit a new file
silent! execute = execute silently, no error messages if failed
0r = read file and insert content at top (0) in the new file
expand(":e") = get extension of current filename
see also http://vim.wikia.com/wiki/Use_eval_to_create_dynamic_templates
*fixed missing dot in file path
Create a templates subdirectory in your ~/.vim folder
$ mkdir -p ~/.vim/templates
Create a new file in subdirectory called R.skeleton and put in the header and/or other stuff you want to automagically load upon creating a new ".R " file.
$ vim ~/.vim/templates/R.skeleton
Then, add the following to your ~/.vimrc file, which may have been suggested in a way by "guest"
autocmd BufNewFile * silent! 0r $HOME/.vim/templates/%:e.skeleton
Have a look at my github repository for some more details and other options.
It's just a trick I used to use .
It's cheap but If you ain't know nothing about vim and it's commands it's easy to handle.
make a directory like this :
~/.vim/templates/barney.cpp
and as you konw barney.cpp should be your template code .
then add a function like ForUncleBarney() to end of your .vimrc file located in ~/.vimrc
it should be like
function ForBarneyStinson()
:read ~/.vim/templates/barney.cpp
endfunction
then just use this command in vim
:call ForBarneyStinson()
then you see your template
as an example I already have two templates for .cpp files
:call ForBarney()
:call ACM()
sorry said too much,
Coding's awesome ! :)
Also take a look at https://github.com/aperezdc/vim-template.git.
I use it and have contributed some patches to it and would argue its relatively full featured.
What about using the snipmate plugin? See here
There exist many template-file expanders -- you'll also find there explanations on how to implement a rudimentary template-file expander.
For my part, I'm maintaining the fork of muTemplate. For a simple start, just drop a {ft}.template file into {rtp}/template/. If you want to use any (viml) variable or expression, just do. You can even put vim code (and now even functions) into the template-file if you wish. Several smart decisions are already implemented for C++ and vim files.