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1. UNIX for Beginners Questions & Answers
On my MAC - I get Command not found error for some command like mvn , java_home etc .
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anyone else have the same problem ? (3 Replies)
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2. Solaris
Hi all,
ar command not found on Solaris 10 version.
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3. Shell Programming and Scripting
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4. Shell Programming and Scripting
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5. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
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line 4:
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6. Shell Programming and Scripting
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7. Solaris
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8. UNIX for Dummies Questions & Answers
Hi guys,
I do apologise if this question has been asked before. I am currently running Solaris 10 on a x86 architecture. Now, the problem I am having relates to the issuing of commands, for example if I am trying to find out the ipaddress of the machine I would issue the command 'ipconfig -a |... (2 Replies)
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9. UNIX for Dummies Questions & Answers
i installed x windows redhat linux 9.0 in my pc.
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10. Shell Programming and Scripting
hello all
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NPX(1) User Commands NPX(1)
NAME
npx - execute npm package binaries
SYNOPSIS
npx [options] <command>[@version] [command-arg]...
npx [options] [-p|--package <pkg>]... <command> [command-arg]...
npx [options] -c '<command-string>'
npx --shell-auto-fallback [shell]
INSTALL
npm install -g npx
DESCRIPTION
Executes <command> either from a local node_modules/.bin, or from a central cache, installing any packages needed in order for <command> to
run.
By default, npx will check whether <command> exists in $PATH, or in the local project binaries, and execute that. If <command> is not
found, it will be installed prior to execution.
Unless a --package option is specified, npx will try to guess the name of the binary to invoke depending on the specifier provided. All
package specifiers understood by npm may be used with npx, including git specifiers, remote tarballs, local directories, or scoped pack-
ages.
If a full specifier is included, or if --package is used, npx will always use a freshly-installed, temporary version of the package. This
can also be forced with the --ignore-existing flag.
o -p, --package <package> - define the package to be installed. This defaults to the value of <command>. This is only needed for packages
with multiple binaries if you want to call one of the other executables, or where the binary name does not match the package name. If
this option is provided <command> will be executed as-is, without interpreting @version if it's there. Multiple --package options may be
provided, and all the packages specified will be installed.
o --no-install - If passed to npx, it will only try to run <command> if it already exists in the current path or in $prefix/node_mod-
ules/.bin. It won't try to install missing commands.
o --cache <path> - set the location of the npm cache. Defaults to npm's own cache settings.
o --userconfig <path> - path to the user configuration file to pass to npm. Defaults to whatever npm's current default is.
o -c <string> - Execute <string> inside an npm run-script-like shell environment, with all the usual environment variables available. Only
the first item in <string> will be automatically used as <command>. Any others must use -p.
o --shell <string> - The shell to invoke the command with, if any.
o --shell-auto-fallback [<shell>] - Generates shell code to override your shell's "command not found" handler with one that calls npx.
Tries to figure out your shell, or you can pass its name (either bash, fish, or zsh) as an option. See below for how to install.
o --ignore-existing - If this flag is set, npx will not look in $PATH, or in the current package's node_modules/.bin for an existing ver-
sion before deciding whether to install. Binaries in those paths will still be available for execution, but will be shadowed by any pack-
ages requested by this install.
o -q, --quiet - Suppressed any output from npx itself (progress bars, error messages, install reports). Subcommand output itself will not
be silenced.
o -n, --node-arg - Extra node argument to supply to node when binary is a node script. You can supply this option multiple times to add
more arguments.
o -v, --version - Show the current npx version.
EXAMPLES
Running a project-local bin
$ npm i -D webpack
$ npx webpack ...
One-off invocation without local installation
$ npm rm webpack
$ npx webpack -- ...
$ cat package.json
...webpack not in "devDependencies"...
Invoking a command from a github repository
$ npx github:piuccio/cowsay
...or...
$ npx git+ssh://my.hosted.git:cowsay.git#semver:^1
...etc...
Execute a full shell command using one npx call w/ multiple packages
$ npx -p lolcatjs -p cowsay -c
'echo "$npm_package_name@$npm_package_version" | cowsay | lolcatjs'
...
_____
< your-cool-package@1.2.3 >
-----
^__^
(oo)\_______
(__) )/
||----w |
|| ||
Run node binary with --inspect
$ npx --node-arg=--inspect cowsay
Debugger listening on ws://127.0.0.1:9229/....
Specify a node version to run npm scripts (or anything else!)
npx -p node@8 npm run build
SHELL AUTO FALLBACK
You can configure npx to run as your default fallback command when you type something in the command line with an @ but the command is not
found. This includes installing packages that were not found in the local prefix either.
For example:
$ npm@4 --version
(stderr) npm@4 not found. Trying with npx...
4.6.1
$ asdfasdfasf
zsh: command not found: asfdasdfasdf
Currently, zsh, bash (>= 4), and fish are supported. You can access these completion scripts using npx --shell-auto-fallback <shell>.
To install permanently, add the relevant line below to your ~/.bashrc, ~/.zshrc, ~/.config/fish/config.fish, or as needed. To install just
for the shell session, simply run the line.
You can optionally pass through --no-install when generating the fallback to prevent it from installing packages if the command is missing.
For bash@>=4:
$ source <(npx --shell-auto-fallback bash)
For zsh:
$ source <(npx --shell-auto-fallback zsh)
For fish:
$ source (npx --shell-auto-fallback fish | psub)
ACKNOWLEDGEMENTS
Huge thanks to Kwyn Meagher https://blog.kwyn.io for generously donating the package name in the main npm registry. Previously npx was used
for a Tessel board Neopixels library, which can now be found under npx-tessel https://npm.im/npx-tessel.
AUTHOR
Written by Kat Marchan https://github.com/zkat.
REPORTING BUGS
Please file any relevant issues on Github. https://github.com/zkat/npx
LICENSE
This work is released by its authors into the public domain under CC0-1.0. See LICENSE.md for details.
SEE ALSO
o npm(1)
o npm-run-script(1)
o npm-config(7)
npx@10.1.1 April 2018 NPX(1)