How to find the installation path for a software under linux?

  • Under linux, I launch a software by typing, e.g., fluidplot. How can I find the installation path for this software?

    Possible duplicate of 18472

  • You can use:

    which fluidpoint
    

    to see where it is executing from (if it's in your $PATH). Or:

    find / -name fluidpoint 2> /dev/null
    

    to look for a file named fluipoint and redirect errors on virtual filesystems.

    Usually they are in /sbin, /usr/sbin, /usr/local/bin or ~ as a hidden directory.

    From Manual:

    NAME
           which - shows the full path of (shell) commands.
    
    SYNOPSIS
           which [options] [--] programname [...]
    

    Full manual: https://linux.die.net/man/1/which

    or check to see if the program is actually an alias, e.g. `alias fluidpoint`,

    @Chad Some versions of `which` (e.g. the one built in to ZSH) will do that for you

    @Michael excellent to know. Because of your comment, I just discovered that newer versions of bash also do this. +1 to your comment.

    The "Usually they are ..." line is pretty disingenuous, additional software should be in `/opt/*` or `/usr/local/bin`. `~` is your home directory, I'm confused why you call it "hidden".

    Sorry to be ambiguous, I mean `~/.dir`. The hidden directory is below the home directory. And I completely forgot about `/usr/local/bin` dop.

  • If you use an RPM based distribution (CentOS, RHEL, SUSE, openSUSE) you can use rpm -ql

    Example:

    rpm -ql findutils
    /bin/find
    /usr/bin/find
    /usr/bin/xargs
    /usr/share/doc/packages/findutils
    /usr/share/doc/packages/findutils/AUTHORS
    /usr/share/doc/packages/findutils/COPYING
    /usr/share/doc/packages/findutils/NEWS
    /usr/share/doc/packages/findutils/README
    /usr/share/doc/packages/findutils/THANKS
    /usr/share/doc/packages/findutils/TODO
    /usr/share/info/find.info.gz
    /usr/share/man/man1/find.1.gz
    

    Things aren't installed to locations in the Linux/UNIX world like they are in the Windows (and even somewhat in the Mac) world. They are more distributed. Binaries are in /bin or /sbin, libraries are in /lib, icons/graphics/docs are in /share, configuration is in /etc and program data is in /var.

    The /bin,/lib,/sbin contain the core applications needed for booting and the /usr contains all the other user and system applications.

  • The whereis command locates the binary, source, and manual-page files for a command, and the type command tells what exactly the shell executes when you run a certain command.

    Try whereis -l fluidplot in your case. If it only returns "fluidplot:", but no path, that means the software is not installed. Note that this does not include files that may be hidden within the home folder under ~/.local/share/ (in my case).

    Found on Linux Screw

    Re: "this does not include...", it's not clear whether _this_ refers to _type_, _whereis_, or both.

    @agc I merged the three lines into a single paragraph; is it clearer now?

    Yes, it's much clearer.

  • Just to add some point to @djsumdog's answer, if you are using DPKG based dist, like Ubuntu, you can use

    dpkg --status some_package
    

    to check what it is about, and

    dpkg --listfiles some_package
    

    to check what files are included/relevant to this package. It's for packages that don't have a binary to run, like libnss3. And

    dpkg --search some_file
    

    to find what package includes this file.

    For example, dpkg --listfiles libnss3 gives me:

    /.
    /usr
    /usr/lib
    /usr/lib/i386-linux-gnu
    /usr/lib/i386-linux-gnu/libssl3.so
    /usr/lib/i386-linux-gnu/nss
    /usr/lib/i386-linux-gnu/nss/libsoftokn3.chk
    /usr/lib/i386-linux-gnu/nss/libnssckbi.so
    /usr/lib/i386-linux-gnu/nss/libnsssysinit.so
    /usr/lib/i386-linux-gnu/nss/libfreebl3.chk
    /usr/lib/i386-linux-gnu/nss/libnssdbm3.chk
    /usr/lib/i386-linux-gnu/nss/libnssdbm3.so
    /usr/lib/i386-linux-gnu/nss/libsoftokn3.so
    /usr/lib/i386-linux-gnu/nss/libfreebl3.so
    /usr/lib/i386-linux-gnu/libnssutil3.so
    /usr/lib/i386-linux-gnu/libsmime3.so
    /usr/lib/i386-linux-gnu/libnss3.so
    /usr/share
    /usr/share/doc
    /usr/share/doc/libnss3
    /usr/share/doc/libnss3/copyright
    /usr/share/doc/libnss3/changelog.Debian.gz
    /usr/share/lintian
    /usr/share/lintian/overrides
    /usr/share/lintian/overrides/libnss3
    

    Note that the folders are not only owned by this packages, but by others too. Just check the files.

    And reversely, dpkg --search libnss3.so gives me:

    firefox: /usr/lib/firefox/libnss3.so
    thunderbird: /usr/lib/thunderbird/libnss3.so
    libnss3:i386: /usr/lib/i386-linux-gnu/libnss3.so
    libnss3-1d:i386: /usr/lib/i386-linux-gnu/libnss3.so.1d
    
  • Instead of using which (which probably isn't the right choice unless you're using csh) you can use command -v fluidplot to get the shell to boune like shell to tell you what it would do if you asked it to run the command (fluidplot in this example).

    Some examples for me:

    $ command -v ls
    alias ls='ls --color=auto'
    $ command -v cat
    /bin/cat
    $ test_func() {
    > :
    > }
    $ command -v test_func
    test_func
    $ which test_func
    /usr/bin/which: no test_func in (/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin)
    $ if command -v noSuchFile; then echo "It exists"; else echo "does not exist"; fi
    does not exist
    

    so you can also use it to test if a command would even be found and attempted to run. Since most of us use Bourne-like shells (e.g., bash or zsh) this is often preferable to which

  • You can try to run:

    ps aux | grep "THE_NAME_OF_A_PROGRAM"
    

    There are pretty good chances you will see the path to the program (if it's running)

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Content dated before 6/26/2020 9:53 AM