I'm a node.js beginner. I want to modify the behavior of node's default REPL, as decribed in this link, but I don't want to run a startup script because doing so starts the REPL without importing the existing history file. (I know this because I tried the code from the first answer: the modified REPL started, but prior history wasn't available.)
Is this possible? Or would it be easier to figure out how to add/import the existing history file and add said code to a startup script?
NOTE: I also tried using rlwrap with -H path/to/.node_repl.history, as suggested in this thread, combined with the script from the first link, and still no luck. I get the modified behavior, but no history.
Don;t know if this is the 'right' way to do this, but it works for me:
Adding
alias node='node -e repl.repl.ignoreUndefined=true -i'
to my bashrc achieves the effect I'm looking for without clobbering existing history. I'm not sure how well this will work for changing multiple REPL defaults, so I'm not marking this as an answer yet.
UPDATE
Unfortunately, the latest node.js update broke this. I believe this is the pull request responsible.
Related
I'd like to run a shell script that would tell me if a Groovy file is syntactically correct without executing it. The code wouldn't be run, just validated.
I see that there are similar questions, but I would like a simple command line command. I thought there would be parameter for the compiler, but couldn't find it.
I didn't manage to get a direct answer. My problem was that I was making a Jenkins pipeline script and I'd like to verify it before commit and push. This was I would get simples errors in less time.
I've solved my problem using a VSCode Extension to validate the file before committing. No more typos in committed in my version control.
We have put together a perl script that essentially looks at the argument that is being passed to it checks if is creating or modifying a file then it saves that in a mysql database so that it is easily accessible later. Here is the interesting part, how do I make this perl script run before all of the commands typed in the terminal. I need to make this dummy proof so people don't forget to run it.
Sorry I didn't formulate this question properly. What I want to do is prepend to each command such that each command will run like so "./run.pl ls" for example. That way I can track file changes if the command is mv or it creates an out file for example. The script pretty much takes care of that but I just don't know how to run it seamlessly to the user.
I am running ubuntu server with the bash terminal.
Thanks
If I understood correctly you need to execute a function before running every command, something similar to preexec and precmd in zsh.
Unfortunately bash doesn't have a native support for this but you can do it using DEBUG trap.
Here is a sample code applying this method.
This page also provide some useful information.
You can modify the ~/.bashrc file and launch your script there. Do note that each user would (and should) still have the privelege to modify this file, potentially removing the script invocation.
The /etc/bash.bashrc file is system-wide and only changeable by root.
These .bashrcs are executed when a new instance of bash is created (e.g. new terminal).
It is not the same as sh, the system shell, that is dash on Ubuntu systems.
I often find myself taking a lot of time to navigate through my filesystem when using the linux shell. This generally occurs because the autocompletion of bash only works if you provide the start of the file/dirname. What I often end up in is a lot of 'ls' with 'grep' commands, finally doing a 'cd'.
When you use a GUI based filebrowser (like Nautilus) you can type any part of a file/dirname and it will have matches that it jumps to directly. This makes it a lot easier and faster to navigate.
I wonder if anybody knows any great tools that helps with this problem. I know of the existence of Midnight Commander, though I never really used it for real and I couldn't figure out a direct solution for my problem the first couple of times I tried it. Also it seems not suitable because I want to have my shell's current working directory to be changed so I can do stuff there, instead of being stuck in an external program like Midnight Commander.
Try autojmp
https://github.com/joelthelion/autojump
And following article provides another solution
http://jeroenjanssens.com/2013/08/16/quickly-navigate-your-filesystem-from-the-command-line.html
You can first use the autocd or autopushd in zsh. You would just have to type the directory you want to go to, without the hassle of typing cd or pushd everytime.
You also have the globing possibility. For example, if I got those file in a directory:
1-a.tar
1-b.tar
c.tar
I can just type
*a.tar
without caring about the beginning of the file.
As a last solution you can always use an alias to the find command with a personalized option.
I'm a VIM noob, and have revisited it time and again, and I'm hoping to actually stick with it this time. Primarily I'm programming in TextMate with Ruby on Rails. On advice from someone, I have installed Janus (https://github.com/carlhuda/janus) and its helping a lot. But one thing I miss is having a "project" so that I can easily get back into a project quickly.
I want to be able to start a copy of macvim, pointing it to a file, or giving it a command, to load a project back to where I last left it. This means:
CD to the root of the project
Set back up any tabs / splits I had set, at their same locations
Reopen the files I was working on last.
I'm going to explore Conque Shell today (http://code.google.com/p/conque/) and if that works, I would want those shells to also reload and fire off their startup commands. (CD to the project root, fire up the rails server, tail a log, etc.)
Suggestions? I'm looking to streamline my process so that I can just click a shortcut or run a command and after a few seconds be staring at my dev environment right where I left it last.
Bonus: I often use windows too, so being able to do the same in GVim would be great as well.
Thanks for your help
You may want to check out Vim's built-in ability to create a restore sessions. These allow you to save pretty much everything you have setup including cwd, folds, splits, buffers, vars etc. See :help :mksession.
Here are two plugins that help with saving and restoring sessions:
sessionman: http://www.vim.org/scripts/script.php?script_id=2010
session.vim: http://www.vim.org/scripts/script.php?script_id=3150
You might also want to check out the project plugin: http://www.vim.org/scripts/script.php?script_id=69
I too have heard good things about rails.vim.
For Rails developer, there is a well-known plugin by Tim Pope named rails.vim.
Once you are at the root of a rails project (You can change Vim current directory with :cd /path/to/project/root ), rails.vim provides quick way to access your file like :
:Rcontroller file
:Rview file
:Rstylesheet file
They are other options to refactor using partials. Install it and type :help rails.txt. There is plenty of nice features like that. It is really useful to speed up access to your project files.
You can probably combine it with session.vim which provides a way to restore your previous session automatically.
If you don't want to type the path of your project, one possible solution, is to add at the end of your .vimrc the following code :
if isdirectory("~/workspace/project1")
cd ~/workspace/project1
endif
This way you always start Vim into your current workspace. Obviously if you need to switch to another directory you have to manually edit your .vimrc... which is kinda sub optimal.
Terminitor (a Ruby Gem) won't specifically solve your vim "project" goal, but it will solve the rest of your problems. You can setup your terminal windows and then execute a command to capture the terminal positions and sizes, edit the configuration to add any other commands (in Ruby) that you want executed and this will allow you to restore your environment.
I keep hearing this is a path issue with cygwin. It is prevent emacs from working within my cygwin. When I execute find on the cli (not bash/cygwin) I get the same error not matter what I type. I've read this is a problem with path creation within cygwin and that it should be prepending itself to the path. As you can see it is doing that.
Here is my /etc/profile
PATH=/usr/local/bin:/usr/bin:/bin:$PATH
export PATH
Problem is that as everyone else stated, emacs is using find.exe provided by windows. To change this, you need to change your %userprofile%.emacs file.
As nobody else states (even faq!), this file is not created automatically anymore. Go into Options > Save options the mini-buffer (one line at the bottom of emacs) will tell you where the file is being written to.
Go in there and add this line (You've installed cygwin at c:\cygwin, right?):
(setq find-program "C:\\cygwin\\bin\\find.exe")
You may need to restart Emacs for this to take effect.
Just add this line to you .profile
alias find='/cygdrive/c/cygwin/bin/find.exe'
Oddly-enough, I needed to use
(setq find-program "/bin/find.exe")
instead.
But thanks for the suggestion Drew.
Adding a setq find-program [msys2 or git path] in my init file, as suggested (I tried different forms), didn't work for me. "C:\Windows\System32\find.exe" is first in the path if I type where find in eshell and I didn't find how to remove it, only how to add others, which doesn't solve the problem.
So I share here the more radical, but working (also in Powershell), solution I used: replacing the find.exe in "C:\Windows\System32" with the one from "C:\msys64\usr\bin". I kept the old file in case, but so far so good. You need to change the permissions for this operation (see here how to gain full control, but I suggest only applying this to the file, not the whole folder, and putting things back after ;)).