terminal

问题 I want to save a image or load a image which is on this example image link into my computer using rsync command into the terminal. Can anybody tell me how to save the image using terminal command? Path is:- /home/iron/go/src/ 回答1: Here I'm adding my answer to load a image from server to the local system or you can say remote machine to local machine Here is the little code package main import ( "fmt" "io" "log" "net/http" "os" ) func main() { url := "https://www.bookingkoala.com/wp-content

问题 I'm trying to figure out how to capture a return value from a python script in a *nix terminal. I'm using Linux. So, for clarity, I have a converter script where you pass the Python script a number (as a string), it typecasts it, converts it and returns a number using sys.exit(status_number) . I understand that I am taking advantage of the return status, but it something that I would like to be able to do. The only thing I cannot figure out is how to capture that return status in a variable.

问题 I'm SSHd into a remote server with some binary challenges. At one point it asks for me to input text. I know it's using fgets() to read stdin , and that I can overflow where it is being copied to and overwrite a nearby variable. The problem is I don't know how to type the address values I need, \x84 and \x04 etc. If I were able to use bash I would echo -ne "\x84" or use a C hex array but I can't do that kind of thing here. I've tried using a hex to ASCII converter and copying the binary

问题 I need to call a custom script via command line, the scripts takes few arguments and is called on Linux machine. Current version is prone to all kinds of shell injection, how to sanitize arguments given by user? Arguments include login and path (Unix or Windows path) and user should be able to type in any possible path (the path refers to remote path on user server). The code right now simply looks like this: Process process = Runtime.getRuntime().exec("myscript " + login + " " + path); 回答1:

问题 I have a Python 3 code that is supposed to record video. Unfortunately, I do not want it in .h264, I need it to convert to .mp4. Using other StackOverflow threads as a template (specifically this one), I thought the easiest way to do this would have been to use subprocess.Popen to insert MP4Box -add filename.h264 filename.mp4 into the terminal and have it do it for me automatically. Unfortunately, the Python script doesn't do anything and I don't get any error messages, so I don't know what's

问题 So I just started getting into using terminal to manage files etc, and I was trying to setup my sublime text shortcut using this line of code: ln -s /Applications/Sublime\ Text\ 2.app/Contents/SharedSupport/bin/subl /usr/local/bin/sublime However, when I try to do this it says Permission Denied and I have no idea why. I am using a Mac running Mac 10.10.2 . 回答1: For sublime text 3: sudo ln -s "/Applications/Sublime Text.app/Contents/SharedSupport/bin/subl" /usr/local/bin/sublime 回答2: If you

问题 I've installed Xcode and I can compile .cpp files in Xcode. However, I wanna use g++ in Terminal but command not found: g++ now. My OS is Mountain Lion Xcode version is 4.4. 回答1: You need to download and install the Command Line Tools for OSX Mountain Lion from Apple Developer (you'll need a Apple ID which is free to sign up for). This will install GCC (including g++) so you can build direct from Terminal The exact package currently is Command Line Tools (OS X Mountain Lion) for Xcode -

问题 I have a readline-based application with a prompt, however I'd like it to not show when the input is not interactive. $ ./readline-app < command-list > result $ cat result prompt> Output line 1 prompt> Output line 2 prompt> $ How can I make the prompt to not print in this case? 回答1: Use isatty(3) to determine whether stdin and/or stdout are connected to a tty. 来源： https://stackoverflow.com/questions/2406826/gnu-readline-avoid-prompt-string-in-output-if-input-is-not-interactive

问题 EDIT: This is apparently not possible, see Barmars answer below. I use the command below a lot to create a timestamp for archiving purposes. I'd like to add milliseconds to the string. Is that possible? I use this script on both osx and linux, so a solution that works on both would be nice. Are seconds ever rounded up or down with or without milliseconds? (Are minutes rounded up or down?) date -n +%Y%m%d%H%M%S 回答1: I don't think there's a way to do this portably. See the POSIX strftime

问题 If I do something like: $ cat /bin/ls into my terminal, I understand why I see a bunch of binary data, representing the ls executable. But afterwards, when I get my prompt back, my own keystrokes look crazy. I type "a" and I get a weird diagonal line. I type "b" and I get a degree symbol. Why does this happen? 回答1: Because somewhere in your binary data were some control sequences that your terminal interpreted as requests to, for example, change the character set used to draw. You can restore