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Full Discussion: Using multiple 'for' statements
Top Forums Shell Programming and Scripting Using multiple 'for' statements Post 303024413 by FemoTheDon on Monday 8th of October 2018 07:50:54 AM
Old 10-08-2018
Using multiple 'for' statements
Hello,

I am new to scripting and I am trying to write a simple script that creates users and adds their passwords from two files; one a user list file and another a password list file.

For example, I have two files already.

Code:
$ cat file1
andy
stephane
aby
paul

Code:
$ cat file2
123
234
324
456

Is it possible to write a bash script with for statement such as:

Code:
for i in $(cat file1) j in $(cat file2); do useradd $i; echo $j | passwd   --stdin $i; done

My ultimate end goal is that the script will take the string in the first line of file1, create a user based on that name, then use the same line of file2 as the password input, then repeat with next line, creating all four users.

And I have no idea how to make this work without next for loops (which is not giving me the desired results).

Not sure if there is a better way apart from using the for command too.

Thank you.

Femo
Last edited by Scott; 10-08-2018 at 08:54 AM.. Reason: Please use code tags
 

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LEARN ABOUT HPUX

diff3

diff3(1)						      General Commands Manual							  diff3(1)

NAME

       diff3 - 3-way differential file comparison

SYNOPSIS

       file1 file2 file3

DESCRIPTION

       compares three versions of a file, and prints disagreeing ranges of text flagged with these codes:

	      all three files differ
	      file1	is different
	      file2	is different
	      file3	is different

       The type of change required to convert a given range of a given file to some other is indicated in one of these ways:

	      Text is to be appended after line number
			     n1 in file f, where f = or

	      Text is to be changed in the range line
			     n1 through line n2.  If n1 = n2, the range can be abbreviated to n1.

       The  original  contents of the range follows immediately after a indication.  When the contents of two files are identical, the contents of
       the lower-numbered file is suppressed.

	      Produces a script for the
			editor that can be used to incorporate into file1 all changes between file2 and file3 (see ed(1)); i.e., the changes  that
			normally would be flagged and

	      Produces a script to incorporate only changes flagged

	      Produces a script to incorporate only changes flagged

	      Produces a script that will incorporate all
			changes  between  file2  and  file3,  but treat overlapping changes (that is, changes that would be flagged with in normal
			listing) differently. The overlapping lines in both files will be inserted by the edit script bracketed by and lines.

	      Produces a script that will incorporate only changes flagged
			, but treat these changes in the manner of option.

       The following command applies the resulting script to file1.

EXTERNAL INFLUENCES

   International Code Set Support
       Single- and multi-byte character code sets are supported.

WARNINGS

       Text lines that consist of a single period defeat

       Files longer than 64K bytes do not work.

FILES

SEE ALSO

       diff(1).

																	  diff3(1)
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