02-06-2011
Need some help with my homework
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:
Hi, since I'm relatively new to Unix I need some help. I've installed FreeBSD 8 on a virtual machine and I've done most of the tasks but don't know if I'm right or wrong ;/
Here it goes:
1. Why do folders /bin and /usr/bin usually come out at the first place as an output of the command echo $PATH?
2. Explain what would be the result of the command $ `date`
3. You want to concatenate the two files foo1 and foo2 but you have to put some text from the command line between them too. How would you do that?
4. If a command procedure contains a command:
echo ${d-'*'}
what would come out?
5. Can you use sh < foo.sh instead of sh foo.sh to execute a script?
2. Relevant commands, code, scripts, algorithms:
echo $PATH
$ `date`
echo ${d-'*'}
3. The attempts at a solution (include all code and scripts):
Ok, first of all I don't know why but I can't create files to test some commands ;/ I mean I write for example cat >file1 and it says "Cannot create file1. Read-only file system."
Here are my answers dunno if I'm right or wrong so please help me :]
1. Because in those folders are the most important system scripts, files etc. that are being used when the operating system loads
2. In my case it came out: Thu: not found.
But when I change `` to ' ' it says the correct date. Is that the catch here?
3. Aah maybe:
cat >>foo1 foo2 >foo3 or maybe not?^^
4. It prints out - * ?
5. I'm not sure about that one - maybe you can, because < is used for input
Thanx a lot
4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
New Bulgarian University, Sofia, Bulgaria, N.Gadjev, CSCB584 UNIX
Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).
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LEARN ABOUT NETBSD
npm-run-script
NPM-RUN-SCRIPT(1) NPM-RUN-SCRIPT(1)
NAME
npm-run-script - Run arbitrary package scripts
SYNOPSIS
npm run-script <command> [--silent] [-- <args>...]
alias: npm run
DESCRIPTION
This runs an arbitrary command from a package's "scripts" object. If no "command" is provided, it will list the available scripts.
run[-script] is used by the test, start, restart, and stop commands, but can be called directly, as well. When the scripts in the package
are printed out, they're separated into lifecycle (test, start, restart) and directly-run scripts.
As of ` https://blog.npmjs.org/post/98131109725/npm-2-0-0, you can use custom arguments when executing scripts. The special option -- is
used by getopt https://goo.gl/KxMmtG to delimit the end of the options. npm will pass all the arguments after the -- directly to your
script:
npm run test -- --grep="pattern"
The arguments will only be passed to the script specified after npm run and not to any pre or post script.
The env script is a special built-in command that can be used to list environment variables that will be available to the script at run-
time. If an "env" command is defined in your package, it will take precedence over the built-in.
In addition to the shell's pre-existing PATH, npm run adds node_modules/.bin to the PATH provided to scripts. Any binaries provided by
locally-installed dependencies can be used without the node_modules/.bin prefix. For example, if there is a devDependency on tap in your
package, you should write:
"scripts": {"test": "tap test/*.js"}
instead of
"scripts": {"test": "node_modules/.bin/tap test/*.js"}
to run your tests.
The actual shell your script is run within is platform dependent. By default, on Unix-like systems it is the /bin/sh command, on Windows it
is the cmd.exe. The actual shell referred to by /bin/sh also depends on the system. As of `
https://github.com/npm/npm/releases/tag/v5.1.0 you can customize the shell with the script-shell configuration.
Scripts are run from the root of the module, regardless of what your current working directory is when you call npm run. If you want your
script to use different behavior based on what subdirectory you're in, you can use the INIT_CWD environment variable, which holds the full
path you were in when you ran npm run.
npm run sets the NODE environment variable to the node executable with which npm is executed. Also, if the --scripts-prepend-node-path is
passed, the directory within which node resides is added to the PATH. If --scripts-prepend-node-path=auto is passed (which has been the
default in npm v3), this is only performed when that node executable is not found in the PATH.
If you try to run a script without having a node_modules directory and it fails, you will be given a warning to run npm install, just in
case you've forgotten.
You can use the --silent flag to prevent showing npm ERR! output on error.
You can use the --if-present flag to avoid exiting with a non-zero exit code when the script is undefined. This lets you run potentially
undefined scripts without breaking the execution chain.
SEE ALSO
o npm help 7 scripts
o npm help test
o npm help start
o npm help restart
o npm help stop
o npm help 7 config
January 2019 NPM-RUN-SCRIPT(1)