I'm very new with ssh so I need some help to write some scripts. The idea is I have files distributed in different folders on a remote server. I want to copy some certain folders into another new folder also on the same server. Suppose, I know all the name of folders that I want to copy and I can list them in a text file. How can write a script that will automatically transfer all those folders into the place I need?
Also, suppose there is one file in each folder that is encrypted with an individual password. All passwords are known by me. How can I write a script to automatically decrypt them?
If you don't have a directly answer, can you give me a link to a tutorial on writing ssh scripts?
Many thanks
I think you might be a little confused.
SSH is the tool you use to get to the remote server.
Once you're connected to that remote server, the prompt you see and command line interface is called "sh" or "bash", typically, and is a shell.
What you're looking for is a shell scripting tutorial. You can google for others, but that one looks reasonable.
The simplest thing to do would be to just turn your list of files into a script. It might look something like this:
#!/bin/sh
for file in a, b, c, d; do
cp $file firstFolderName
done
for file in e, f, g, h; do
cp -v $file secondFolderName
done
decrypt secondFolderName/c "myPassword"
Obviously, the command to decrypt would depend on what encryption tool you used.
You could save this into a file called myscript.sh and execute it with sh myscript.sh from the command line. You might need to learn about nano, vi, or emacs, or another editor in order to actually edit this script from an ssh terminal session too.
Assuming that by SSH you mean bash accessed through SSH.
Assuming list of files is just like this:
/path/tofile1
/path/to/file/2
You can do:
$ cp `cat listOfInputFiles | xargs` destinationDirectory
Related
We want to connect to a remote machine using SCP in windows. We want to copy only the recently modified file and hence we would like to list the contents of the directory in sorted order so as to choose the required file. Need help with scp commands if any available in Windows which can help us perform the above action
Searched in the internet and could find only commands with respect to copy
WinSCP (which you have referenced yourself) can download the latest file from an SCP server.
The following batch file will do:
winscp.com /command ^
"open scp://username:password#example.com/ -hostkey=""...""" ^
"cd /remote/path" ^
"lcd c:\local\path" ^
"get -latest *" ^
"exit"
Use WinSCP GUI to generate batch-file template like the one above for you, including the correct value for the -hostkey switch. You just need to add the -latest switch.
See also WinSCP article Downloading the most recent file.
Though note that SCP is an obsolete protocol. You better use SFTP. Majority of servers, that do support SCP, support SFTP too. Just replace scp:// with sftp://.
(I'm the author of WinSCP)
My goal is to make an Electron application, which synchronizes clients' folder with server. To explain it more clearly:
If client doesn't have the files present on the host server, the application downloads all of the files from server to client.
If client has the files, but some files have been updated on the server, the application deletes ONLY the outdated files (leaving the unmodified ones) and downloads the updated files.
If a file has been removed from the host server, but is present at client's folder, the application deletes the file.
Simply, the application has to make sure, that client has EXACT copy of host server's folder.
So far, I did this via wget -m, however frequently wget did not recognize, that some files changed and left clients with outdated files.
Recently I've heard of zsync-windows and webtorrent npm package, but I am not sure which approach is right and how to actually accomplish my goal. Thanks for any help.
rsync is a good approach but you will need to access it via node.js
An npm package like this may help you:
https://github.com/mattijs/node-rsync
But things will get slightly more difficult on windows systems:
How to get rsync command on windows?
If you have ssh access to the server an approach could be using rsync through a Node.js package.
There's a good article here on how to implement this.
You can use rsync which is widely used for backups and mirroring and as an improved copy command for everyday use. It offers a large number of options that control every aspect of its behaviour and permit very flexible specification of the set of files to be copied.
It is famous for its delta-transfer algorithm, which reduces the amount of data sent over the network by sending only the differences between the source files and the existing files in the destination.
For your use case:
If the client doesn't have the files present on the host server, the application downloads all of the files from a server to the client. This can be achieved by simple rsync.
If the client has the files, but some files have been updated on the server, the application deletes ONLY the outdated files (leaving the unmodified ones) and downloads the updated files. Use: –remove-source-files or -delete based on whether you want to delete the outdated files from the source or the destination.
If a file has been removed from the host server but is present at the client's folder, the application deletes the file. Use: -delete option of rsync.
rsync -a --delete source destination
Given it's a folder list (and therefore having simple filenames without spaces, etc.), you can pick the filenames with below code
# Get last item from each line of FILELIST
awk '{print $NF}' FILELIST | sort >weblist
# Generate a list of your files
find -type f -print | sort >mylist
# Compare results
comm -23 mylist weblist >diffs
# Remove old files
xargs -r echo rm -fv <diffs
you'll need to remove the final echo to allow rm work
Next time you want to update your mirror, you can modify the comm line (by swapping the two file arguments) to find the set of files you don't have, and feed those to wget.
or
rsync -av --delete https://mirror.abcd.org/xyz/xyz-folder/ my-client-xyz-directory/
I am getting started with Meteorjs. I'm a windows user so I downloaded the windows installer package Release 0.7.0.1-win2. I use gitbash for my command line interface and can't get it to recognize meteor. I get the error "sh.exe": meteor: command not found". It works fine in windows command line but I prefer gitbash.
How do I get meteor to work with gitbash?
I have the perfect answer for you since I literally just solved the issue myself.
First of all make sure meteor works in the default windows command prompt. Next open git bash and check if the following command works:
cmd //c meteor
This runs the command meteor as if you were in the command prompt.
Next step is to set up an alias in git bash so you don't have to type that out each time.
Open git bash and enter the following:
vim ~/.bashrc
this will open/create the bashrc file in VIM, press i to insert and type the following:
alias meteor="cmd //c meteor"
Save and exit vim by first pressing the Esc key then press the ":" key. Now you should be able to enter commands in VIM. Type "wq" and press enter which will write into your .bashrc file and exit vim.
Almost there! Now that you are back in git bash, all you need to do is point to your .bashrc file by entering the following:
source ~/.bashrc
Now you will be able to run meteor commands straight from git bash! Hope that helped!
Here's the fix:
The problem is because of .bat files not being handled properly by
MinGW
Go to this directory - C:\Users[your username]\AppData\Local\.meteor
You should see a meteor.bat file there. Create a new file called "meteor" (without any extension and ""). Open it with notepad and paste the following:
#!/bin/sh
cmd //c "$0.bat" "$#"
save the file and now run git bash. You should be able to use meteor command in git bash.
Details
To run a *.bat command from MinGW's MSYS shell, you must redirect the execution to cmd.exe, thus:
cmd //c foo.bat [args ...]
The foo.bat command file must be in a directory within $PATH, (or you must specify the full path name ... using slashes, not backslashes unless you use two of them for each path name separator). Also, note the double slash to inform cmd.exe that you are using its /C option, (since it doesn't accept the -c form preferred by the MSYS shell.
If you'd like to make the foo.bat file directly executable from the MSYS shell, you may create a two line Bourne shell wrapper script called simply foo alongside it, (in the same directory as foo.bat), thus:
#!/bin/sh
cmd //c "$0.bat" "$#"
(so in your case, you'd create script file meteor alongside meteor.bat).
In fact, since this wrapper script is entirely generic, provided your file system supports hard file links, (as NTFS does for files on one single disk partition), you may create one wrapper script, and link it to as many command file names as you have *.bat files you'd like to invoke in this manner; (hint: use the MSYS ln command to link the files).
Credits to: Keith Marshall on SO and rakibul on Meteor Forums
It shouldn't be too hard - you just need to make sure that the meteor.bat file is in your executable. Check with echo $PATH from the bash console if it is already there.
For me, the meteor 0.7.0.1-win installer appended meteor's folder to the path automatically. However, you can add it manually with:
export PATH=$PATH:/path/to/user/folder/AppData/Local/.meteor
(On CygWin my user folder is at /cygdrive/c/Users/adam - I'm not sure what the equivalent path would be on git bash).
If you like, append that line to your ~/.profile to make sure meteor gets added to the path when the console opens.
Finally, on Windows the executable file is meteor.bat. I made a symbolic link to the filename meteor, just so I wouldn't have to type the .bat:
cd /path/to/user/folder/AppData/Local/.meteor
ln -s meteor.bat meteor.
Please have a look at the issue https://github.com/sdarnell/meteor/issues/18
I would suggest maybe creating a trivial wrapper script or alias that invokes LaunchMeteor.exe with the original arguments.
After more research on google I see that there isn't an implemented way to do this yet. The guys at meteor are working on it and accepting pull requests if you have a solution. The conclusion I came to is to use Vagrant and virtualbox to set up a ubuntu vm for meteor development. You can find info at this site: http://win.meteor.com/ on how to install virtual machines and provision to work with meteor.
I have to retrieve a directory with all the subdirectories from a server. However, I want to exclude some file with a specific extension (they are heavy and useless to me).
scp -r myname#servername:fodertocpy .
does copy the whole directory but I don't know how to exclude files with .abc extension, let's say.
I would like to use scp because it already automatically handles my passwords.
This isn't possible with only scp as scp doesn't have an exclude flag. I assume you want to utilise your key auth you've already setup with ssh /scp. If so I would do rsync over ssh - it would then utilise your existing key authentication.
Something like this would work:
rsync --exclude '*.abc' -avz -e ssh myname#servername:foldertocpy .
Have a look at the man rsync for an explanation of the flags.
Hope this helps,
Will
The only way I found out to execute my script with the Love2d framework is to zip all of it and then rename the zip to love. This kinds of take a lot of time for a small modification. Is there a faster way to do it? I tried to command line and I get this error
'love' is not recognized as an internal or external command,
operable program or batch file.
LÖVE also executes folders if they have the main.lua in them - you can just drag and drop the folder onto the application, or call it from the command line with the folder as the argument if you prefer.
LÖVE runs the contents of a folder if it can find a main.lua in it (Like Bill said).
[Note that it doesn't check subfolders].
There are three ways to run a love2D program, you can:
a) Drag the folder over the love.exe binary/link (This works in Win and *Nix, I don't know about OS X).
b) Navigate to the directory that is one level above the folder and type love [folder containing main.lua]
or
c) Zip it up and rename the .zip to a .love. Then double click the .love file
Option 'b' will fail if the binary is not in the %PATH%(Windows) or $PATH(*Nix) variable
(It will spout an error message like 'love' is not recognized as an internal or external command, operable program or batch file. on windows and bash: love: command not found on linux).
There are two ways to solve this:
(Both require ADMIN/root privileges, )
1) Add the love binary to the PATH variable. Here's how to do this in windows and in linux (In linux you want to do something like this: PATH=$PATH:$HOME/where/ever/you/put/love/)
2) You can add a link to the love2D binary in C:\WINDOWS\system32 or /usr/bin/.
In windows you create a shortcut to the love.exe (wherever you installed it to) and then drag it into C:\WINDOWS\system32. In linux you can run this:
sudo link /path/to/love/binary /usr/bin/love && sudo chmod ugo+rwx /usr/bin/love
I hope this helps!
Sources:
Google (the links above), Love2D and my knowledge :D
I found this to be very helpful when i started. Hope this helps
A Guide to Getting Started With Love2d
If you're using Mac OS, you should run using:
open -a love xxx.love
To recreate a file as .love, you can run in command line:
zip xxx.love file1.lua file2
If you just want to replace a file in .love:
zip -r xxx.love file1.lua
I think this will make your work easier.
simple way:
create folder /path/to/Game
put your files (main.lua, conf.lua, ...) in folder /path/to/Game
you can run script like this:
love /path/to/Game/
or if you use Linux, you can go in folder (cd /path/to/Game) and type just:
love .
(dot means that you want to run it form in folder
I found a simple solution for save time.
You have to create a file .bat with this simple command:
del Project.love
7z.exe a Project.zip ..\Project\*
ren Project.zip Project.love
For do this you need to download 7zip and insert this file (file.bat) into the folder of your project. Like this:
Good work!
If you're yousing Notepad++ to write your code, just open your main.lua file, then go to Run and add there this text including quotes:
"Path" "$(CURRENT_DIRECTORY)"
Where Path is a Full path to love.exe.
The save it to a key combination and now you can test your code by using this combination in any script at Notepad++.
If you use Sublime Text, you can make a build which runs your application.
https://love2d.org/wiki/Sublime_Text
While in Sublime Text press CMD + B or Ctrl + B