You need to be more specific. There are dozens (hundreds?) of scripting languages out there.
mdelete is a command to delete files over FTP. Whether or not it's a valid script command would depend on the scripting language.
sys.argv is a way to access command line arguments in Python. sys.argv is an array of all the command line parameters, where the first value is the name of the file being run. For example, let's say you have a python script named example.py that looks like this: import sys print(sys.argv) This script will simply print the command line parameters in an array. If, for example, you run the script from a command line as python example.py param1 param2 the output will be ['example.py', 'param1', 'param2']
batch files are used to make long tasks shorter. for example, If I wanted to change the file extension of every file in the folder EXAMPLEFOLDER from .txt to .doc, I could make a batch file that did that instantly, rather than going into the properties of every file and changing the extension manually
The shell interprets the script, while the C-compiler generates a binary executable.
The main function must return the int data type. A program that terminates normally should return the value zero to indicate no error. Not all execution environments make use of the return value (Windows in particular), however a command script or batch file can examine the ERRORLEVEL if required.
mdelete is a command to delete files over FTP. Whether or not it's a valid script command would depend on the scripting language.
You can use the set_time_limit function to increase the execution time of a php script. Example: set_time_limit(120); // Sets the time limit to 2 minutes
The awk programming/scripting language is used to pattern match text and then do something with the result. Using the -f option indicates that the awk program/script has been stored in an external file instead of being specified inline with the command.
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In general each command in a script file is on a separate line, so it is terminated with a line terminator character (put it automatically when you press the Enter key). Unlike some programming languages, a script file does not need a special terminator for the end of the line.
The 'exit' command allows you to stop a running shell script at any point and to return a "status" value back to whomever called the shell script. This is a very common practice with shell scripts; sometimes you want to stop the script before it gets to the end of the shell script (for various logic reasons). The 'exit' command also allows you to give a status that any other calling process can use to determine if the shell script ended successfully or not.
document.write("hello world")
This is used when you want to give a variable in an awk script a value before the script starts executing, even before the BEGIN block. You would do this on the command line if the variable needs different values for different executions rather than hardcoding it in the awk script itself.
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If the shell script is readable and executable then to execute it just type the name of the shell script file. Otherwise, you can explicity call a shell interpreter to run the file as a shell script, i.e., ksh myfile
The special line at the beginning of the script is only necessary if you want the script to be run by a certain command interpreter that is different from your logon shell or because you don't know what environment the user of the shell might be running in. It is a special comment line that looks like: #!/command-name such as: #!/usr/bin/ksh which causes the ksh interpreter to be used for the rest of the shell script.
You don't need a shell script to do this - just use the 'tail' command.