Please note: This is not a question related to pip or python. I am trying to make sense of why I see a "permission error" instead of "path not found" error. I have done many installations and uninstallation for different softwares including python. So I can't recall how the setup was many years back. My core question is why I see an "zsh: permission denied: pip" instead of "pip not found". When an executable doesn't exist, I would expect it to be say "not found" vs pointing to a possible permission issue. And secondly; is there a way in linux\unix\mac to identify all commands\symlinks\aliases that are broken now? Here is my terminal output ayusman :$ pip zsh: permission denied: pip ayusman :$ which pip pip not found ayusman :$ type pip pip not found ayusman :$ Thank you.

I would like to learn about solutions/alternatives for managing execution access to applications in Linux-based systems (specifically Fedora flavours). I already researched possibilities like Integrated Measurement Architecture, fapolicyd, or Microsoft Integrity Policy Enforcement. I am more interested in solutions with more capabilities than simply comparing the hash value of the executable against a known list, but at this point pretty much any suggestion is welcome. The purpose for which I need this mechanism is to enforce the users of specific machines (which I own and manage) to only be able to execute code that I have authorised them to.

There may be a simple answer to this, but if there is, I'm not aware of it. I've downloaded the latest GitHub release of Neovim, because the one in the apt repositories is outdated by a few major versions. After following the installation instructions on the GitHub page, the nvim executable is placed in /opt/nvim-linux-x86_64/bin. From there, I can simply add it to my PATH in my .bashrc. This works fine for terminal use, but what if I got lazy and wanted to open files via the graphical file browser? It works fine with the apt version, because that is a deb package and everything. In the "Default Applications" app on Mint I've tried setting the default app for source code and text files as the nvim executable. It says it works, but when I try to double-click on a text file to open it, it doesn't. I've tried it numerous times, and I also tried adding the %U flag to it, to no avail. So as the title says, how can I set this version of nvim as my default app for text/source files?

My machine is home desktop(personal) running Debian Buster with i3 window manager. I recently installed firejail with apt install firejail* firetools and also downloaded the new Firefox 83 browser from Firefox official website. I can run the firefox binary as a non-firejail user, as in, navigating to the new firefox directory and running [user@debian]:$ ./firefox It works fine and all. However, if I try doing, firejail --noprofile --seccomp --private --nonewprivs /home/user/downloads/firefox/firefox it says, the file firefox isn't executable. Running ls -l on the executable returns that it is executable. Then I copied the whole new firefox directory to /tmp/ then opened a new firejail bash session with firejail --seccomp --private --nonewprivs bash, then started a sandboxed bash session. Then copied the firefox directory from /tmp/ to $HOME and tried running the firefox binary from there, and it says permission denied The file was executable, and was owned by same user. What am I doing wrong here.

I'm trying to run a python script, on a headless Raspberry PI using winSCP and get the following error message: Command '"./areadetect_movie_21.py"' failed with return code 127 and error message /usr/bin/env: python : No such file or directory. When I try and run from terminal, I get: : No such file or directory. I try a similar python script, in the same directory, with the same python shebang, the same permissions and using the same user pi, and it works. I also do a ls and I can see the file, so I don't know why it will not run.

I find it peculiar, that I could not execute binaries / scripts on my new RAMdisk (tmpfs). **1)**

tmpfs  /ramdisk  tmpfs  exec,size=3G,noauto,sync,user,rw,x-gvfs-show,x-gvfs-name=RAM  0  0

versus **2)**

tmpfs  /ramdisk  tmpfs  size=3G,noauto,sync,user,rw,x-gvfs-show,x-gvfs-name=RAM,exec  0  0

*** **In the first case**, I can't execute anything, as in the exact error message: > bash: ./a.sh: Permission denied and returned code 126 to my Bash shell. *** Created the file as follows, for completeness:

vlastimil@rog-g713pi /ramdisk $ cat a.sh
#!/bin/sh
echo A
EOF

and I tried to run it directly as follows:

chmod 755 a.sh; ./a.sh; echo $?

*** Why does the position of exec flag matter? (And is there possibly some other mystery waiting for me... :)) Thanks OS: Linux Mint 22.1 (Cinnamon), based on Ubuntu 24.04.

I want to find out the list of dynamic libraries a binary loads when run (With their full paths). I am using CentOS 6.0. How to do this?

The standalone executable yt-dlp recommended for macOS suddenly stopped working. I used it two weeks ago and it worked. I have not had any updates to my system, expect some brew updates/upgrades. Every time the command is run: zsh: command not found: yt-dlp I did not find any relevant issues on the official repository. I re-installed the binary a few times and ensured it's not a path issue. None of the similar questions with zsh: command not found match my problem. Output of echo $PATH:

/opt/homebrew/bin:/opt/homebrew/sbin:/Library/Frameworks/Python.framework/Versions/3.10/bin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Applications/iTerm.app/Contents/Resources/utilities

For readability, the same, but with a line break after every ::

/opt/homebrew/bin:
/opt/homebrew/sbin:
/Library/Frameworks/Python.framework/Versions/3.10/bin:
/usr/local/bin:
/System/Cryptexes/App/usr/bin:
/usr/bin:
/bin:
/usr/sbin:
/sbin:
/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:
/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:
/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:
/Applications/iTerm.app/Contents/Resources/utilities

Suppose apt modifies or removes an executable, say a script file, of the package, while the executable is running. Can you rely the running executable will be intact so that the executable runs like it was not touched? Obviously apt can downgrade/upgrade itself, at least. In some cases overwriting a Bash script while it is running could alter its code, see this answer , but does using apt somehow prevent that kind of behavior?

I am trying to run the COMSOL license manager in Pop OS; however, when I try to run: $ ./lmgrd -c ../license.dat -l /var/tmp/comsol55.log I get the following error: > bash: ./lmgrd: No such file or directory The lmgrd file is clearly present in the current directory. Running ldd lmgrd gives the following output: linux-vdso.so.1 (0x00007acd5ec0d000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007acd5ebf0000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007acd5eb09000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007acd5eae9000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007acd5e800000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007acd5eae4000) /lib64/ld-lsb-x86-64.so.3 => /lib64/ld-linux-x86-64.so.2 (0x00007acd5ec0f000) Is the issue here that the first dependency is missing? If so, what package is required to add that in Pop OS?

When hitting enter (or double-clicking) an executable shell script (a ".sh" file, for instance), it would be nice if this would launch the script inside a console window. I am using the Dolphin file manager, and KDE with Debian 11. While there are many ways to open, launch, and execute scripts, but nothing that does this one simple thing. When tapping enter on an executable shell script, the box below is displayed: * "Open" will incorrectly "open the script" using the console app *(result is that the console window opens, but nothing happens)* * "Execute" will correctly run the script *(result is that the script runs, but the console window never opens, and output is not shown unless it is redirected to a file)* When right-clicking an executable script, the following menu is shown: * "Open with Konsole" will incorrectly "open the script" using the console app *(result is that the console window opens, but nothing happens)* * **"Run in Konsole" is perfect!** ***(script is both opened AND run inside a new console window, and output is shown on-screen)*** The question is: **How can I achieve the "Run in Konsole" action using the Enter key on the keyboard?** *That's the real problem here: using the mouse to right-click and pick over and over is tiresome.* Apparently, this used to be possible in the Thunar file manager until recently (the feature was removed). Most other threads I have found on this topic all require the right-mouse-button: * https://unix.stackexchange.com/q/233864/461964 * https://unix.stackexchange.com/q/326114/461964 Any advice or guidance is appreciated.

I need to run the binary that I don't fully trust. I've created a systemd unit for it where it's locked down as much as humanly possible, it works great. Now it's still on my system (Fedora) and I may accidentally execute it. How can I prevent this? It still needs to be mode 700 or something to be executed by systemd which makes it executable by root and again I want to prevent this. Now I can have three linked systemd units, where the first one makes it chmod 700, the second one actually executes it, the third one makes it chmod 644 but it's way too convoluted. I guess something simpler can be done.

in my $PATH I have folder ~/.zsh/bin which I use for small scripts and custom built executable binaries, for example I added a recently compiled tool I made called wercker_build_status to the folder. Yet when I type in the command line wercker_build_status it can't find it, I have to type the full path to the file, ~/.zsh/bin/wercker_build_status. That's not to say nothing in the folder doesn't work, a script I have called wifi_status is in there and typing that into the command line returns the wifi status as expected. Why is it even though it's in my $PATH I can't just use a file I add to the folder ~/.zsh/bin?

I have a file in $HOME/bin (before you ask, yes, it is in my path) called test which I've confirmed can be executed fine when I run it with the full path to the file. However, I get a really weird issue when I don't run it this way. When I just run test in the terminal, it doesn't do anything and returns immediately. I know that this isn't an issue of finding the file for several reasons: 1. There is no error message. Normally if the file can't be found or can't be executed a message will be printed out saying so. 2. Running which test still returns the correct file path. 3. Probably the weirdest of all - the script works fine when run through strace. I tried using strace to see if I could figure out what was going on but when I ran it with strace, it worked as expected with 0 issues.

If you create an executable file with the following contents, and run it, it will delete itself. How does this work? #!/bin/rm

What are the different methods to run a non-nixos executable on NixOs? (For instance proprietary binaries.) I'd like to see also the manual methods.

If you go to the VirusTotal link , there is a tab called file info(I think; mine is dutch). You'll see a header called "Authenticode signature block and FileVersionInfo properties" I want to extract the data under the header using Linux cli. Example: > Signature verification Signed file, verified signature > Signing date 7:43 AM 11/4/2014 > Signers > [+] Microsoft Windows > [+] Microsoft Windows Production PCA 2011 > [+] Microsoft Root Certificate Authority 2010 > Counter signers > [+] Microsoft Time-Stamp Service > [+] Microsoft Time-Stamp PCA 2010 > [+] Microsoft Root Certificate Authority 2010 I used the Camera.exe in Windows 10, to somehow extract the data. I extracted the .exe file, and found a CERTIFICATE file in it, there is a lot of unreadable data, but also some text, I can read, that is - roughly - the same like the above output. How can I extract Signatures from a Windows .exe file under Linux using cli

I have a laptop with both a discrete and an onboard graphics card. I want to run a Game executable file using the discrete GPU but instead it runs on the obnboard one. How can I run it with the discrete GPU? *The game is not installed. It is a folder where I run the executable FILE.* * OS: Pop! OS (Gnome) * CPU: amd ryzen 5 4000series * GPU: NVIDIA GTX 1650 * game: cities:skyline * RAM: 16 gigs * File explorer - Nautilus I get this option for installed apps but how can I get it for executable files? Tried to make the Desktop application File: location - /usr/share/applications/Cities.desktop - and double clicking it opens up the file explorer [Desktop Entry] Encoding=UTF-8 Version=1.0 Type=Application Terminal=false Exec="/home/{username}/Games/linux games/Cities - Skylines Collection/Cities.x64" Name=Cities:Skyline Icon="/home/{username}/Games/linux games/Cities - Skylines Collection/LauncherAssets/game-logo.png" __GLX_VENDOR_LIBRARY_NAME=nvidia __NV_PRIME_RENDER_OFFLOAD=1 __VK_LAYER_NV_optimus=NVIDIA_only

I'm trying to install Navicat which is an x86-64 binary onto my aarch64 machine, which results in "cannot execute binary file: Exec format error" Here's the result of running

on the executable:

-sqlserver-en.AppImage: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.18, BuildID[sha1]=d629f6099d2344ad82818172add1d38c5e11bc6d, stripped

And here is my

-a

:

penguin 4.19.98-08076-g24ab33fb8e14 #1 SMP PREEMPT Wed Apr 1 17:17:36 PDT 2020 aarch64 GNU/Linux

Is there any way to run this executable on my machine? (Idk if this makes any difference but I'm running Linux on my Samsung Chromebook Plus w/ an OP1 processor)

I've created a bash script but when I try to execute it, I get #!/bin/bash no such file or directory I need to run the command: bash script.sh for it to work. How can I fix this?