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Is the option is compulsory with cut command?
OPTION value is mandatory to use for `cut` command and FILE name is optional. If you omit the file name in the command then it will take data from standard input. But if you omit the OPTION value in cut command then it will generate the error. Select the particular bytes.
What is difference between awk and cut?
Awk does the job in one-line but cut needs a grep command to get only the lines which contain particular word and it prints the column 2 according to the delimiter space. You can do the things in awk if cut fails to do.
What is the default delimiter used by the cut command for cutting fields?
tab
cut uses tab as a default field delimiter but can also work with other delimiter by using -d option.
How to write bash script with optional input arguments?
If I were to write bash argument_script.sh -i /c/ -o /f/ the variables MAPPE and OUTPUTFOLDER would be using the default values. The behavior you describe is because you have an extra : in your getopt. Just change your getopt line to this and it will work: However, this is a very, very convoluted way of writing your script.
How to add options to a bash script?
The ability to process options entered at the command line can be added to the Bash script using the while command in conjunction with the getops and case commands. The getops command reads any and all options specified at the command line and creates a list of those options.
What do you need to know about bash script?
The ability for a Bash script to handle command line options such as -h to display help gives you some powerful capabilities to direct the program and modify what it does. In the case of your -h option, you want the program to print the help text to the terminal session and then quit without running the rest of the program.
What do two colons mean in bash script?
From its manpage (emphasis mine): Two colons mean an option takes an optional arg; if there is text in the current argv -element (i.e., in the same word as the option name itself, for example, -oarg), then it is returned in optarg, otherwise optarg is set to zero.