Can a bash script delete itself

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August undefined, 2024

WebOct 20, 2011 · What actually happens is that bash keeps the file open and rm won't make that stop. So rm calls the libc function "unlink ()" which will remove the "link" to the inode …

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WebNov 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. WebOnly 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 … flamestop exhw 138

Can I modify a bash script (.sh) file while it is running?

WebOct 19, 2009 · A script is a text document that contains some high-level commands in a given language (usually bash or tch for unix commands). A process is what you get when you run (execute) a script - the computer translates the text commands in the script file into low-level computer commands, and then creates and executes those commands. it's like … WebFeb 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 WebJun 14, 2024 · rm -rf / — Deletes Everything! The command rm -rf / deletes everything it possibly can, including files on your hard drive and files on connected removable media devices. This command is more understandable if it’s broken down: rm — Remove the following files. -rf — Run rm recursively (delete all files and folders inside the specified ... can piles become infected

Can a shell script delete or overwrite itself? - Stack …

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WebMay 3, 2024 · An exe can't delete itself because an exe can't be deleted while it's running. However, a batch file can delete itself, presumably because its contents get copied so the file can close before the code gets run. So what if there was a general-purpose batch file that deletes the calling executable and then deletes itself? WebSo, 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. What is disown in bash? In the Unix shells ksh, … flamestop newcastleWebJul 13, 2015 · I think I remember that under Command.com it was either impossible or could cause grief if a *.BAT script tried to modify or delete itself. For use by XP onwards with CMD.EXE I have a temporary need for a Run-Once script, which will do its job and then delete itself because there is no further need for it. flamestop paint

"WebProgramming. 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 single directory and file starting from / path. On that note - please never write commands with this kind of destructive potential by hand. " - Can a bash script delete itself

Can a bash script delete itself

shell - Delete files and folders recursively in subdirectories - Unix ...

WebSep 9, 2024 · It echos an indication that the script will self-destruct. At this point, it begins a countdown in seconds, from 5 to 1, before removing itself — the script file — from the file system. Take a look, and maybe, just maybe, you’ll find yourself in need of something like this sometime, too. Write-Output -InputObject 'This script will self ... 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.

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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 … 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 …

WebJan 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 … 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.

WebNov 3, 2024 · Bash functions differ from most programming languages when it comes to returning a value from a function. By default, bash returns the exit status of the last executed command in the function's body. The script below shows how to specify the exit status using return: 1. Create a script and name it test.sh: vim test.sh. WebSep 28, 2016 · The rm command is commented out so that you can check and verify that it's working as needed. Then just un-comment that line. The check directory section will ensure you don't accidentally run the script from the wrong directory and clobber the wrong files. You can remove the echo deleting line to run silently.

Web- 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 ...

WebUpdate: Thanks to Registered User for pointing me to a better answer on Unix.stackexchange.com. Depending upon the size of the script and the … can piles shrinkWebProgramming. 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 … flame stop incWebJul 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 ... flamestop over stained woodWebJan 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, … can piles stop you fartingWebMar 11, 2014 · I just got the command to delete the executing bat file. Just add flames top lineWeb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(甚至甚至写入).只有在最后一个程序关闭其句柄时，文件真的被删除了. flame stopper 5000 specsWeb@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). flamestop new zealand