- MAC OS X SHELL SCRIPT COMMAND LINE PARAMETERS FULL
- MAC OS X SHELL SCRIPT COMMAND LINE PARAMETERS PASSWORD
- MAC OS X SHELL SCRIPT COMMAND LINE PARAMETERS SERIES
If you want to write a non LCL program, then create in Lazarus a new project of type “Console Application”. The Application object is a TCustomApplication. Of course you can still access the parameters directly via paramStr and paramCount.Įvery LCL application uses this automatically. The unit custApp that comes with FPC provides the TCustomApplication class, which provides functions to easily check and read parameters. The getOpts unit provides a few other routines for program invocation following a certain style.Ī good program should give a help message when invoked with the wrong parameters and it should follow a common way of giving parameters. There could be multiple hard-links pointing to the same inode, the file could have already been deleted, parts of the file path might have changed, beside other details.įor these reasons, paramStr ( 0 ) is useless on Unixoid platforms. Note: On Unixoid platforms it is impossible to accurately define the location of a file merely by a string.
ParamCount returns the number of supplied arguments.
MAC OS X SHELL SCRIPT COMMAND LINE PARAMETERS FULL
ParamStr ( 0 ) tries returning the name, and possibly full path to the executable program file.Ī Pascal program can a access command line arguments by using the paramStr function in conjunction with paramCount. The function paramStr returns the n-th argument on the command line.
long options), and the system unit aims to provide the basic means to work with, all command line arguments are simply enumerated starting from zero. Since the notion of “option” and “parameters” are already kind of high-level, different styles exist (short options vs. Note, the CLI/OS provides the program only with arguments it is supposed to get:įor example, escaped newline characters, file redirection (pipes or to a file), and assignment of environment variables will not be forwarded to the program. Environment variable Environment variables refer to a labeled piece of storage in the environment. In general, though, arguments are all words on the command line not being interpreted in any way. In a narrow sense arguments are all supplied words that are neither options or (part of) parameters. On the command line they are usually separated by spaces (confer the IFS variable in some shells). On the command line they look like: ‑‑processors 4. Parameter Parameters are key-value-tuples. They usually assume the form ‑‑dryrun/ ‑‑no‑dryrun (dryrun enabled or disabled respectively). Terminology Option Options are yes/no flags. However, since a CLI is more tangible the following instructions mainly to refer to a shell’s user experience. diagnostics.sh to execute it or double click on it to run it if it's saved to your desktop.Although this page speaks of command-line parameters and environment variables, an actual command line interface (CLI) is not a requirement to use such data, nor to use the routines and terminology described here. Just make sure you make it executable by issuing the command chmod +x diagnostics.sh and use. You can name the file diagnostics.sh and place it anywhere you like. However, you can redirect the output to a file by appending > /path/to/outputfile.txt at the end of each command so you have a file which you can parse once the file has finished running. Keep in mind that any output generated, will get sent to the console (screen). System_profiler SPHardwareDataType | grep -i Identifier
# Get the model of the machine in question However, if you are getting diagnostic info, for example, you can have a script that does #!/bin/bash Now, this all depends on the they types of command and whether or not they require user intervention.
MAC OS X SHELL SCRIPT COMMAND LINE PARAMETERS SERIES
You can also see here on Stack Overflow for a bit more information.Ī script is just a series of commands, so you could put it into a bash script.
MAC OS X SHELL SCRIPT COMMAND LINE PARAMETERS PASSWORD
When the script runs, you'll have to enter your password (and be an administrator)