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BASH: How to copy a file without overwriting older files
You can use the "--interactive" option (present in my cp from GNU coreutils 6.12) to prompt you before overwriting and fill it with a default: echo 'n' | cp --interactive ~/somefile.txt ~/somefile_already_exists.txt

Categories : Bash

MacOS Terminal: how to use a seccond ssh key?
The way to use several ssh keys is to use a ~/.ssh/config Host serverKey1 Hostname server1 # or ip address of server1 User serverUser IdentityFile ~/.ssh/id_rsa Host serverKey2 Hostname server1 # or ip address of server1 User serverUser IdentityFile ~/.ssh/id_rsa.gitlab You then need to use an scp-syntax for your ssh url: git clone serverKey1:/my/repo git clone serverKey2:/my/repo serverKey1 and serverKey2 are entries in your ~/.ssh/config file in order to pass to ssh the right server, user and identify file (public and private keys) If those private keys are password-protected, you would still need to add them. You can see more at this atlassian help page: "Configure multiple SSH identities for GitBash, Mac OSX, & Linux".

Categories : Osx

Pseudo-terminal will not be allocated because stdin is not a terminal ssh bash
You seem to assume that when you run ssh to connect to a server, the rest of the commands in the file are passed to the remote shell running in ssh. They are not; instead they will be processed by the local shell once ssh terminates and returns control to it. To run remote commands through ssh there are a couple of things you can do: Write the commands you want to execute to a file. Copy the file to the remote server using scp, and execute it with ssh user@remote command Learn a bit of TCL and use expect Write the commands in a heredoc, but be careful with variable substitution: substitution happens in the client, not on the server. For example this will output your local home directory, not the remote: ssh remote <<EOF echo $HOME EOF To make it print the remote home directory

Categories : Bash

Start and stop logging terminal output to file from within bash script
You can use the braces to redirect commands to tee through a pipe #!/bin/bash # to terminal and logfile.log { echo "aaa" echo "bbb" echo "ccc" } 2>&1 | tee logfile.log # only terminal echo "ddd" echo "eee"

Categories : Bash

is there a way to combine EOF with a terminal alias?
Instead, create a function an save it in your ~/.bashrc: importme() { ssh root@server.com << EOF mysql list databases; EOF } Source (. ~/.bashrc) and you will be ready to use it with importme.

Categories : Mysql

gnome-terminal new tab with alias as command to execute
When a bash shell is started, per default bash executes the commands specified in .bashrc. This is how your shell knows your alias's. Now your idea does not work because gnome-terminal never sees your .bashrc file. You could try gnome-terminal --working-directory='<path-to-your-home-directory>/Desktop/myproject/

Categories : Linux

Bash alias autocompletion that considers only *.foo files
Try: complete -f -X '!*.tex' g Then, you can type: g <TAB> And get the completions. Note: this doesn't complete directories. Someone else may have a better solution using compgen. There's a helpful autocomplete guide on The Linux Documentation Project too.

Categories : Bash

alias .="cd .." causing bash to start at root
. refers to the current directory, while .. refers to the one upper in the dirs hierarchy. What must be happening is that in your bashrc you have some . after this alias definition, so it gets called and hence you are moved to the parent directory. So: you enter and you are in /home/your_home you set alias .="cd ..". some dot . is found while reading .bashrc. this dot is executed as to be an alias, so you get cd .., which moves you to /home. you probable have more than one . and it must get executed again, moving you from /home to /. Solution: Create an alias with a better name that does not have any predefined meaning. Move your alias sourcing to the bottom of .bashrc.

Categories : Bash

How can one create and then use an alias in a function of a sourced Bash script?
Note that aliases will have limited functionality for scripting. From the Advanced Bash Scripting Guide: In a script, aliases have very limited usefulness. It would be nice if aliases could assume some of the functionality of the C preprocessor, such as macro expansion, but unfortunately Bash does not expand arguments within the alias body. [2] Moreover, a script fails to expand an alias itself within "compound constructs," such as if/then statements, loops, and functions. An added limitation is that an alias will not expand recursively. Almost invariably, whatever we would like an alias to do could be accomplished much more effectively with a function. I would use a variable for this: myFunction(){ zappo="echo" $zappo "foo bar" } Or even a wrapper function: zappo() {

Categories : Bash

How do you set the 16 Terminal Colors for Git-Bash?
Console colors are stored in the registry under HKCU/Console/[window name]/ColorTable00-15. [window name] is either "Git Bash" for the start menu entry or something like "C:_Program Files (x86)_Git_git-cheetah_.._bin_sh.exe" for the Windows Explorer context menu entry (supplied by Git-Cheetah). Alternatively, the registry settings can be overridden by storing an NT_CONSOLE_PROPS structure with appropriate ColorTable settings in the "Git Bash.lnk" shortcut via IShellLinkDataList::AddDataBlock. This happens e.g. if you edit the properties of a console window started via shortcut, or if you edit the shortcut properties directly. If you want the values from the registry instead, create a new "Git Bash.lnk" shortcut from scratch and leave the Options/Font/Layout/Colors tabs alone.

Categories : Windows

bash: propagating exit code of command executed in alias
It's better that you just use functions over aliases: cda() { cd /a exit_code=$? echo "STATUS: $exit_code" return "$exit_code" # optional } cdb() { cd /b exit_code=$? echo "STATUS: $exit_code" return "$exit_code" # optional } As for the alias you could try adding a test in the end: alias cda='cd /a; exit_code=$?; echo "STATUS: $exit_code"; [[ exit_code -eq 0 ]]'; alias cdb='cd /b'

Categories : Bash

Bash non scrolling terminal output
Instead of printing whole lines (as with println or printing %n), write backspace characters () or bare carriage returns without linefeeds ( ) to move the cursor back in front of what you want to print over.

Categories : Java

git alias with bash conditional logic comparing strings - syntax issues
You could try either the character code of the character you want, or the hex name of the character you want. Here is a link to these things: http://www.utf8-chartable.de/ At the core of what you are doing, you are just writing a bash script in your environment. So whatever lets you write quotes outside of git's bash interface should be able to work here.

Categories : GIT

MacOS dot file delete for MS-DOS devices
Here is my clumsy answer to the Question posted above. The main drawbacks are lack of much error handling or commenting, and the complexity level for non-technical users who need to learn about making shell scripts executable. If it could all be done in an AppleScript, it might be much more useful for a wide range of users baffled by the dotfile problem. Here's the Readme.txt file I've shared with the two scripts below: noMacOSdots.app -Introduction- Sometimes you may want to share files with an MS-DOS or Microsoft Windows user, or a non-Apple product such as a TV or media player. The problem is that all disk devices including USB sticks that have been attached to a MacOS computer or other Apple device will have files placed on them by MacOS that are invisible to MacOS u

Categories : Linux

relation between init and bash terminal process
Nothing is shared between init and its terminal children, nor between the first terminal and its terminal child. This is because, although fork() will make both processes (father and child) to share some objects, exec() family functions completely replaces the current process image with a new process image. This means that all references to previous objects, such as shared file descriptors from the father, are forgotten.

Categories : Linux

Multiple tab-completion routines in Bash terminal
The keybindings themselves are part of readline, and can be changed in your ~/.inputrc or use the bind command in your .bashrc (etc.), but they don't bind directly to user-defined functions, only indirectly as macros that might call those functions. "C-xhf": dump-functions # for ~/.inputrc bind '"C-xhf":dump-functions' # in .bashrc (etc.) bind -l will show you builtin functions you can bind to. You can add macros this way, which let's you run any bash function you want, although not in completion context, so the results don't get stuffed back into the command line. Example: "C-xc": "echo hi " # note it's a just macro, not a direct binding. I'm guessing you already know you can override completion with the complete builtin for commands at the left on the command line.

Categories : Bash

stop bash script from outputting in terminal
Append >> /path/to/outputfile/outputfile.txt to the end of every echo statement echo "Process is running." >> /path/to/outputfile/outputfile.txt Alternatively, send the output to the file when you run the script from the shell [~]# sh check.sh >> /path/to/outputfile/outputfile.txt

Categories : Bash

New tab in Terminal.app does not open in same directory/bash fails (Mountain Lion)
I had this problem too, and discovered that I had accidentally changed a setting in the "Startup" tab of the Terminal preferences. The setting was "Shells open with: Command (complete path): ." I changed it back to "Shells open with: Default login shell" and that solved the problem.

Categories : Bash

sentence as user input - multiple times from terminal - bash script
This is because in your second call to read, you are using the -a argument which does: The words are assigned to sequential indices of the array variable aname, starting at 0. aname is unset before any new values are assigned. Other name arguments are ignored. That appears to be not what you want.

Categories : Bash

`-bash: rbenv: command not found` comes up every time I open a terminal window. How do I fix this?
Without being able to see your .bashrc or .bash_profile files, I would guess that you have a line in one of them what is supposed to be loading something from rbenv. I would check there to see if there is something that might be loading is.

Categories : Osx

How to print out error messages into terminal screen while doing pipes (linux bash)
Error messages written to standard error will not be sent to the piped command. I mean if your command is: cmd | cmd2 then only the stdout messages from cmd will be piped to cmd2 and not stderr messages. Here is an example I used. I tried cating a non-existing file and tried greping some text: $ cat non-existing-file.txt | grep something > grepped-text.txt cat: non-existing-file.txt: No such file or directory

Categories : Bash

log4net rolling file appender (by date) overwriting existing file
It looks like my theory was correct! The default file size is 10mb, and the default rolling style is composite. Combined with the non static file name, when it reached 10mb, it just rolled over to the same file and began logging again.

Categories : C#

Overwriting core data file then load new file
Try in your handleOpenURL method to set the managedObjectContext, managedObjectModel and persistentStoreCoordinator to nil. That should force the app to reload the db file the next time CoreData is used to access data.

Categories : IOS

Overwriting a file without the risk of a corrupt file
You should lock the actual data file while you write its substitute, if there's a chance that a different process could be going through the same protocol that you are describing. You can use flock for the file lock. As for your temp file name, you could make your process ID part of it, for instance "example.dat.3124," No other simultaneously-running process would generate the same name.

Categories : C++

Overwriting a line in CSV file with C++
There are no C++ functionality to "insert" or "remove" text in a text-file. The only way to do that is to read the existing text in, and write out the modified text. If the new text fits in the same space as the old one, all you need to do is to overwrite the existing text - and of course, you can always add extra spaces before/after a comma in a .CSV file, without it becoming part of the "field". But if the new data is longer, it definitely won't work to "overwrite in place". Adding to the end is relatively easy by using the ios_base::ate modifier. But inserting in middle still involves basically reading until you find the relevant place, and then, if the new text is longer, you have to read all the following lines before you can write the new one(s) out.

Categories : C++

Overwriting and Saving File using I/O and Datagridview
On load, store the filename. On save, if a filename has been stored, use that one instead (and then reset it to null). string currentFile = null; ... currentFile = openFileDialog1.FileName; ... if (currentFile != null) { fn = currentFile; currentFile = null; }

Categories : C#

PHP losing anything between PHP tags when overwriting file
When you try and grab a php file from a remote server the file is parsed by the server meaning it actually runs the PHP. You can't remotely get the php contents of a file unless you FTP in or you set up the remote server to not parse PHP (which I'm sure you don't want to do)

Categories : PHP

execute user inputed Windows (or bash) commands from batch (or bash) file?
Do you need a full bash prompt? Or would something like this be enough? #!/bin/bash echo -n "Enter cmd: " read COMMAND echo ${COMMAND} | bash Also, in a script, you can just execute bash and get a full prompt in the current environment.

Categories : Bash

Java overwriting an existing output file
I would like to overwrite the file if I run the program again. Pass false as 2nd argument, to set append to false: FileOutputStream output = new FileOutputStream("output", false); Check out the constructor documentation: If the second argument is true, then bytes will be written to the end of the file rather than the beginning.

Categories : Java

Write in a text file without overwriting in fs node js
Check the flags here: http://nodejs.org/api/fs.html#fs_fs_open_path_flags_mode_callback - you are currently using w+ which: 'w+' - Open file for reading and writing. The file is created (if it does not exist) or truncated (if it exists). You should use a instead: 'a' - Open file for appending. The file is created if it does not exist. 'ax' - Like 'a' but opens the file in exclusive mode. 'a+' - Open file for reading and appending. The file is created if it does not exist. 'ax+' - Like 'a+' but opens the file in exclusive mode.

Categories : Javascript

Buffered Writer overwriting file when not wanted
You need to use append mode new BufferedWriter(new FileWriter(yourFileName, true)); here, true means that the txt should be appended at the end of file. Check the FileWriter javadoc for more information.

Categories : Java

Overwriting a few lines in a file only if specific criteria are met
Not sure if I understood your question correcly, but as I understand you have to do the following: Keep every line of inp2 file in the list of strings. Search for lines which are starting with "recev:" in inp1 file. Every time if the condition "if len(lines) == 5" is satisfied for line which contains "recev:", replace that line with the first element of the kept list. Remove first element of the list every time when "recev:" containing line is found in inp1 file.

Categories : Python

node.js fs.writeFile Not Completely Overwriting File
I've just tested this on 0.8.21 ( linux ) and this works as expected. var fs = require('fs') var str1 = "aaaaaaaaaa" var str2 = "bbbbbb" var str3 = "bbbbbbaaaa" fs.writeFile('test',str1,function(){ fs.writeFile('test',str2,function(){ fs.readFile('test','utf8',function(err,buff){ console.log(buff === str2) console.log(buff === str3) }) }) }) output > node test.js true false

Categories : Javascript

I have an issue with fwrite not properly overwriting a file
Use fflush() http://php.net/manual/en/function.fflush.php This function forces a write of all buffered output to the resource pointed to by the file handle.

Categories : Http

Using pickle to log user's input without overwriting the file
You may want to check out Python's shelve module. A “shelf” is a persistent, dictionary-like object. The difference with “dbm” databases is that the values (not the keys!) in a shelf can be essentially arbitrary Python objects — anything that the pickle module can handle. This includes most class instances, recursive data types, and objects containing lots of shared sub-objects. The keys are ordinary strings. Straight from the Docs: import shelve d = shelve.open(filename) # open -- file may get suffix added by low-level # library d[key] = data # store data at key (overwrites old data if # using an existing key) data = d[key] # retrieve a COPY of data at key (raise KeyError if no # such key) del d[key]

Categories : Python

How to add a line in a text file without overwriting it (JAVA)?
Use MODE_APPEND: FileOutputStream output = openFileOutput("latlngpoints.txt",Context.MODE_APPEND); From the doc: File creation mode: for use with openFileOutput(String, int), if the file already exists then write data to the end of the existing file instead of erasing it.

Categories : Java

How to write more into a file without overwriting on pre-saved data
First, you are calling createNewFile(). This indicates that you want to create a new file. If you do not want to create a new file, do not call createNewFile(). And, since the documentation for createNewFile() says "This method is not generally useful", you may wish to consider just getting rid of it. Second, you need to indicate that you want to append to the existing data when you open and use that file. The standard recipe for this: try { PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("outfilename", true))); out.println("the text"); out.close(); } catch (IOException e) { //oh noes! } The true in the second parameter to the FileWriter constructor indicates that you want to append instead of overwrite. Third, do not hardcode paths in Android. /sdc

Categories : Java

Injecting queries into DAOs via a spring config file
If the purpose is to facilitate SQL modification without code recompilation, then yes this will do. You just need to inject RuleDao into your DAO classes. However in my opinion SQL query modification should go through standard software lifecycle (design, implement, test, operate). So I'm happy with my SQL queries being hardcoded into DAO classes.

Categories : Java

Running a .py script from bash, how can I pass a python variable back to the terminal once the .py is done running?
You can write your variable and its value into an ini file from the python script. In Values.ini file my_var="value" After executing python script, just invoke Values.ini using . operator . Values.ini Now your shell variable $my_var will be having the assigned value. The advantage with this method is that you can assign any number of variables like this. var1="value1" var2="value2" var3="value3"

Categories : Python

bash script to write content into file. File content requires bash variables. How to do that?
You're actually deliberately turning off parameter subsitution by enclosing 'ENDFILECONTENT' in quotes. See this excerpt from example 19-7 of the advanced Bash scripting guide on Heredocs, slightly reformatted: # No parameter substitution when the "limit string" is quoted or escaped. # Either of the following at the head of the here document would have # the same effect. # # cat <<"Endofmessage" # cat <<Endofmessage Remove the single quotes around 'ENDFILECONTENT' and BASH will replace the variables as expected.

Categories : Bash



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