Can a bash script delete itself
Web在UNIX的操作系统上,如果仍然打开,则可以删除文件.文件名将不再存在,但数据本身确实保留,并且任何具有打开句柄的程序,包括Bash,可以继续使用该句柄读取(甚至甚至 … WebJul 12, 2024 · Simplifying the Bash scripting process. You can make this script a bit more practical. For example, you could create a backup script that uses rsync to back up a directory to a USB-attached drive mounted at the /backup directory. If you previously backed up the same directory, that script might look like: #!/bin/bash . rsync -av --delete ...
Can a bash script delete itself
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Web@maxschlepzig POSIX allows the deletion of the last link to an executable that is currently being executed to fail: unlink may fail with ETXTBUSY. (Oddly, “pure procedure” and “shared text” aren't defined in the spec; AFAIK they mean a component of an executable program: the executable itself or a library it uses). WebJan 25, 2014 · Lua, 17 bytes os.remove(arg[0]) This actually only works if you run the program by typing out the full filepath, i.e. lua ~/Scripts/removeself.lua would work, but lua removeself.lua would not, …
WebMay 2, 2016 · You can start a script with one heading, or set of file permissions, then change it before the interpreter is started. Instead, I believe such files are opened and … WebJan 7, 2024 · The self-delete part itself is quite simple — rm $0 and the script goes kaput. But, I also need to remove the line from ~/.bashrc that triggered the script execution. For this, sed can be used.
WebMay 19, 2024 · Now remove that function because you don't need it anymore. You can do that with the unset command, like this: [student@testvm1 ~]$ unset -f hw ; hw bash: hw: command not found [student@testvm1 ~]$ The hello.sh script. Create a new Bash shell script, ~/bin/hello.sh, and make it executable. Add the following content, keeping it basic … Only when the last program closes its handle does the file really get deleted. So, in a sense, yes, a shell script can delete itself, but it won't really be deleted until after the execution of that script finishes. Note that you get different results if you overwrite the file instead of deleting it.
WebThe reason of the permissions requirement difference lies in how the program that interprets your script is loaded:./script.sh makes your shell run the file as if it was a regular executable.; The shell forks itself and uses a system call (e.g. execve) to make the operating system execute the file in the forked process.The operating system will check …
WebMay 24, 2006 · Set objFSO = CreateObject(“Scripting.FileSystemObject”) strScript = Wscript.ScriptFullName objFSO.DeleteFile(strScript) For i = 1 to 5 Wscript.Echo i Wscript.Sleep 1000 Next. As you can see, here we start out by deleting the script and only then do we enter the For Next loop and echo numbers back to the screen. notebook acer aspire a515-54WebFeb 22, 2024 · Create some empty files in your directory using the touch command. Touch command takes a filename as an argument. # touch file1.txt file2.txt file3.txt. Give permission to make the script executable. # chmod 777 deleteFile.sh. Run the script now and give the directory name, here we are using the current directory (.). # ./deleteFile.sh how to set launch page on edgeWebNov 17, 2024 · First of all, please excuse my poor english. I am trying to write a shell script to clean up some files of certain type in my backup folders. I need to remove files of certain type, except 10 newest in each folder. how to set last seen on whatsappWeb- Folder B contains the Shell script (code.sh) PART A: The script code.sh has to delete all the files in folder A and also afterwards delete the Folder B Including the script code.sh. PART B: Also this has to be scheduled via crontab at some particular time which in itself is not a problem. But after the script has deleted contents of Folder A ... how to set launch options without steamWebMay 24, 2006 · Actually it’s even easier than it looks; after all, over the half the lines of code are there just so the script does something before it deletes itself. We begin by … how to set launch options epic gamesWebJan 17, 2024 · As a general rule, Commands in a sh-based shell script will run synchronously, with the command being executed sequentially, such that each command completes before the next is started. The primary exception to this is when the command is explicitly started in, or moved to "the background", generally by placing an & at then end … notebook acer driver downloadWebProgramming. 15 comments. Best. •. b) delete your whole OS in a line or two. You probably mean sudo rm -rf --no-preserve-root /. Which tells your OS to recursively delete every … notebook acer aspire es 15 ficha técnica