On Dec 22, 2024, Arbol One wrote:

Hello.

In my Debian 12, I used snap to install Brave. To select it as browser in Netbeans I need to know the location of the executable.
Does anyone know the directory for the Brave executable?

Assuming you installed it from *deb package, I'd imagine "/usr/bin".

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On Mon, Dec 23, 2024 at 07:17:49 -0500, Greg Wooledge wrote:

1) Verify that "snap run brave" is the right invocation by typing
that into a shell.

2) If that's working, then create a shell script:

mkdir -p ~/bin
printf '#!/bin/sh\nexec snap brave run\n' > ~/bin/brave
chmod 755 ~/bin/brave

Actually, you may need to be able to pass additional arguments to the
browser, so:

mkdir -p ~/bin
printf '#!/bin/sh\nexec snap brave run "$@"\n' > ~/bin/brave
chmod 755 ~/bin/brave

That should be more flexible.

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On Mon, Dec 23, 2024 at 06:24:56 -0500, Dan Purgert wrote:

On Dec 22, 2024, Arbol One wrote:

In my Debian 12, I used snap to install Brave.

Does anyone know the directory for the Brave executable?

Assuming you installed it from *deb package, I'd imagine "/usr/bin".

I'm imagining that since snap is involved, it's some kind of magical incantation, like "snap run brave". In other words, whatever thing
you're trying to configure to run this program had better be able to
pass arguments, not just take a single program name.

If the thing you're configuring can only take a single program name
and no arguments, then:

1) Verify that "snap run brave" is the right invocation by typing
that into a shell.

2) If that's working, then create a shell script:

mkdir -p ~/bin
printf '#!/bin/sh\nexec snap brave run\n' > ~/bin/brave
chmod 755 ~/bin/brave

3) Now tell the thing you're configuring that your browser is
/home/yourusername/bin/brave (don't try to use a tilde there).

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On 12/23/24 4:39 AM, Jeffrey Walton wrote:

On Mon, Dec 23, 2024 at 4:12 AM Arbol One <ArbolOne@hotmail.ca> wrote:

In my Debian 12, I used snap to install Brave. To select it as browser in Netbeans I need to know the location of the executable.
Does anyone know the directory for the Brave executable?

`command -v brave`.

Is 'command' documented somewhere?

Jeff

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On Dec 23, 2024, Greg Wooledge wrote:

On Mon, Dec 23, 2024 at 06:24:56 -0500, Dan Purgert wrote:

On Dec 22, 2024, Arbol One wrote:

In my Debian 12, I used snap to install Brave.

Does anyone know the directory for the Brave executable?

Assuming you installed it from *deb package, I'd imagine "/usr/bin".

I'm imagining that since snap is involved, it's some kind of magical incantation, like "snap run brave". [...]

Jeeze, I'm blind. Totally didn't even *register* the bit about it being installed as a snap package.


--
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|_|_|O| Github: https://github.com/dpurgert
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On Monday, 23-12-2024 at 23:56 Richard Owlett wrote:

On 12/23/24 4:39 AM, Jeffrey Walton wrote:

On Mon, Dec 23, 2024 at 4:12 AM Arbol One <ArbolOne@hotmail.ca> wrote:

In my Debian 12, I used snap to install Brave. To select it as browser in Netbeans I need to know the location of the executable.
Does anyone know the directory for the Brave executable?

`command -v brave`.

Is 'command' documented somewhere?

Shows how much about Linux I know, I had never previously heard about the command called command.

An Internet search was not great since "command" is such a common term, however I managed to find some info using the usual Linux 'get help' options. Maybe there is more detailed info out there somewhere?

$ man command
No manual entry for command

$ command --help
command: command [-pVv] command [arg ...]
Execute a simple command or display information about commands.

Runs COMMAND with ARGS suppressing shell function lookup, or display
information about the specified COMMANDs. Can be used to invoke commands
on disk when a function with the same name exists.

Options:
-p use a default value for PATH that is guaranteed to find all of
the standard utilities
-v print a description of COMMAND similar to the `type' builtin
-V print a more verbose description of each COMMAND

Exit Status:
Returns exit status of COMMAND, or failure if COMMAND is not found.

Jeff

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On 12/23/24 17:28, George at Clug wrote:

On Monday, 23-12-2024 at 23:56 Richard Owlett wrote:

On 12/23/24 4:39 AM, Jeffrey Walton wrote:

On Mon, Dec 23, 2024 at 4:12 AM Arbol One <ArbolOne@hotmail.ca> wrote: >>>>

In my Debian 12, I used snap to install Brave. To select it as browser in Netbeans I need to know the location of the executable.
Does anyone know the directory for the Brave executable?

`command -v brave`.

Is 'command' documented somewhere?

Shows how much about Linux I know, I had never previously heard about the command called command.

An Internet search was not great since "command" is such a common term, however I managed to find some info using the usual Linux 'get help' options. Maybe there is more detailed info out there somewhere?

$ man command
No manual entry for command

eben@cerberus:~$ type command
command is a shell builtin

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On Tuesday, 24-12-2024 at 09:32 eben@gmx.us wrote:

On 12/23/24 17:28, George at Clug wrote:

On Monday, 23-12-2024 at 23:56 Richard Owlett wrote:

On 12/23/24 4:39 AM, Jeffrey Walton wrote:

On Mon, Dec 23, 2024 at 4:12 AM Arbol One <ArbolOne@hotmail.ca> wrote: >>>>

In my Debian 12, I used snap to install Brave. To select it as browser in Netbeans I need to know the location of the executable.
Does anyone know the directory for the Brave executable?

`command -v brave`.

Is 'command' documented somewhere?

Shows how much about Linux I know, I had never previously heard about the command called command.

An Internet search was not great since "command" is such a common term, however I managed to find some info using the usual Linux 'get help' options. Maybe there is more detailed info out there somewhere?

$ man command
No manual entry for command

eben@cerberus:~$ type command
command is a shell builtin

https://www.gnu.org/software/bash/manual/html_node/Shell-Builtin-Commands.html

https://www.gnu.org/software/bash/manual/html_node/Bash-Builtins.html

command

command [-pVv] command [arguments …]

Runs command with arguments ignoring any shell function named command. Only shell builtin commands or commands found by searching the PATH are executed. If there is a shell function named ls, running ‘command ls’ within the function will execute
the external command ls instead of calling the function recursively. The -p option means to use a default value for PATH that is guaranteed to find all of the standard utilities. The return status in this case is 127 if command cannot be found or an
error occurred, and the exit status of command otherwise.

If either the -V or -v option is supplied, a description of command is printed. The -v option causes a single word indicating the command or file name used to invoke command to be displayed; the -V option produces a more verbose description. In this
case, the return status is zero if command is found, and non-zero if not.


$ command --help
command: command [-pVv] command [arg ...]
Execute a simple command or display information about commands.

Runs COMMAND with ARGS suppressing shell function lookup, or display
information about the specified COMMANDs. Can be used to invoke commands
on disk when a function with the same name exists.

Options:
-p use a default value for PATH that is guaranteed to find all of
the standard utilities
-v print a description of COMMAND similar to the `type' builtin
-V print a more verbose description of each COMMAND

Exit Status:
Returns exit status of COMMAND, or failure if COMMAND is not found.

"If there is a shell function named ls, running ‘command ls’ within the function will execute the external command ls instead of calling the function recursively."
Is this the main point to command? "will execute the external command ls instead of calling the function recursively"

What is the difference between 'execute' and 'calling' ?

Maybe "execute' does not return any exit value from the program being executed?





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On Tue, Dec 24, 2024 at 09:28:43 +1100, George at Clug wrote:

Shows how much about Linux I know, I had never previously heard about the command called command.

An Internet search was not great since "command" is such a common term, however I managed to find some info using the usual Linux 'get help' options. Maybe there is more detailed info out there somewhere?

$ man command
No manual entry for command

$ command --help
command: command [-pVv] command [arg ...]

[...]

The "command" command's base functionality is specified by POSIX: <https://pubs.opengroup.org/onlinepubs/9799919799/utilities/command.html>

Specific shells (like bash or dash) may add additional functionality
to it. I'm not specifically aware of anything added by bash, but that
doesn't mean there isn't anything. The bash reference manual would be
the authoritative reference, if you want to comb through that. The bash
man page is usually close enough, and is more readily available.

Bash has other commands, such as "type", which extend the introspection
parts of "command". For example, "type -a echo" may be informative,
especially on systems like Solaris where there are potentially several different "echo" programs in different directories, and the ordering
of directories in PATH determines which one is used. POSIX's "command"
only prints the first thing found, and has no option like "-a" to print
more things.

The most common use of "command" is writing a wrapper function:

ls() {
if [ -t 1 ]; then
command ls --color -F "$@"
else
command ls "$@"
fi
}

Without "command ls", the function would recurse infinitely. Since
"command" suppresses function lookups, it prevents the function from
calling itself, without requiring you to write "/bin/ls" or some other
path that may or may not be correct.

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On 12/23/24 15:28, George at Clug wrote:

On Monday, 23-12-2024 at 23:56 Richard Owlett wrote:

On 12/23/24 4:39 AM, Jeffrey Walton wrote:

On Mon, Dec 23, 2024 at 4:12 AM Arbol One <ArbolOne@hotmail.ca> wrote: >>>>

In my Debian 12, I used snap to install Brave. To select it as browser in Netbeans I need to know the location of the executable.
Does anyone know the directory for the Brave executable?

`command -v brave`.

Is 'command' documented somewhere?

Shows how much about Linux I know, I had never previously heard about the command called command.

An Internet search was not great since "command" is such a common term, however I managed to find some info using the usual Linux 'get help' options. Maybe there is more detailed info out there somewhere?

$ man command
No manual entry for command

$ command --help
command: command [-pVv] command [arg ...]
Execute a simple command or display information about commands.

Runs COMMAND with ARGS suppressing shell function lookup, or display
information about the specified COMMANDs. Can be used to invoke commands
on disk when a function with the same name exists.

Options:
-p use a default value for PATH that is guaranteed to find all of
the standard utilities
-v print a description of COMMAND similar to the `type' builtin
-V print a more verbose description of each COMMAND

Exit Status:
Returns exit status of COMMAND, or failure if COMMAND is not found.

Jeff

Hi,

I use whereis to find if a program is installed:

fred@ragnok:~$ whereis apt-get
apt-get: /usr/bin/apt-get /usr/share/man/man8/apt-get.8.gz
fred@ragnok:~$

Best regards,
Fred

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On Mon, Dec 23, 2024 at 20:37:38 -0500, Jeffrey Walton wrote:

On Mon, Dec 23, 2024 at 8:32 PM George at Clug <Clug@goproject.info> wrote:

Is this the main point to command? "will execute the external command ls instead of calling the function recursively"

Like many shell builtins, "command" does multiple things, depending on
how you use it. Suppressing function lookups is certainly *one* of the
things it does. Printing the first path of an external command is
another things that it does.

I already showed an example of a wrapper function that uses "command ls"
to run the external command instead of the function.

Greg provided the link to the documentation:

The "command" command's base functionality is specified by POSIX:
<https://pubs.opengroup.org/onlinepubs/9799919799/utilities/command.html>

And following the link:

DESCRIPTION

The command utility shall cause the shell to treat the arguments as a
simple command, suppressing the shell function lookup that is described
in 2.9.1.4 Command Search and Execution, item 1c.

And also:

When the -v or -V option is used, the command utility shall provide
information concerning how a command name is interpreted by the shell.

That feature is used when you want to determine whether something is
already installed.

hobbit:~$ if command -v firefox-esr >/dev/null; then echo firefox installed; fi
firefox installed
hobbit:~$ if command -v emacs >/dev/null; then echo emacs installed; fi
hobbit:~$

Obviously that's more useful in a script. If you're a human and you just
want that information for your own curiosity, "type" is a lot easier to
use:

hobbit:~$ type firefox-esr
firefox-esr is /usr/bin/firefox-esr
hobbit:~$ type emacs
bash: type: emacs: not found

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On 12/23/24 8:26 AM, Max Nikulin wrote:

On 23/12/2024 19:56, Richard Owlett wrote:

On 12/23/24 4:39 AM, Jeffrey Walton wrote:

`command -v brave`.

Is 'command' documented somewhere?

Déjà vu...

Richard Owlett to debian-user. Using terminal commands - corner cases.
Wed, 27 Nov 2024 05:38:30 -0600. <https://lists.debian.org/msgid-search/722ee1ce-bfb6-facd-2bab-a8e1052a17eb@access.net>

I've used terminal commands for so many decades I don't know where to
look up fine details of a specific commands.

Your quote is incomplete. I also said:

But is there somewhere to go directly without a web search?

What I needed is the discussion of command/type/whereis/etc which is
now occurring below in this thread/sub-treads ;}

I'll have to re-read the sub-thread to see if my question had been
answered but did not register ;/

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On 12/24/24 4:08 AM, Richard Owlett wrote:

On 12/23/24 8:26 AM, Max Nikulin wrote:

On 23/12/2024 19:56, Richard Owlett wrote:

On 12/23/24 4:39 AM, Jeffrey Walton wrote:

`command -v brave`.

Is 'command' documented somewhere?

Déjà vu...

Richard Owlett to debian-user. Using terminal commands - corner cases.
Wed, 27 Nov 2024 05:38:30 -0600.
<https://lists.debian.org/msgid-search/722ee1ce-bfb6-facd-2bab-a8e1052a17eb@access.net>

I've used terminal commands for so many decades I don't know where to
look up fine details of a specific commands.

Your quote is incomplete. I also said:

 But is there somewhere to go directly without a web search?

What I needed is the discussion of command/type/whereis/etc     which is now occurring below in this thread/sub-treads ;}

I'll have to re-read the sub-thread Max referenced to see if my question had been
answered but did not register ;/

I just reread {in chronological order} the overall thread Max
referenced. I need to do a detail read of several Bash references
mentioned by various people:
> https://mywiki.wooledge.org/BashGuide
> https://guide.bash.academy/
> http://folk.ntnu.no/geirha/bashguide.pdf
> https://www.gnu.org/software/bash/manual/

There also was an intriguing reference to a BSD tool called "Learn"
which is described by its man-page as "computer aided instruction about
UNIX" [ https://www.unix.com/man-page/bsd/1/LEARN/ ].

Is Debian similar enough to BSD that LEARN could be run?
Has it, or something similar, been created for Debian?

In the meantime the four references above should keep me occupied.

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