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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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DIFF(1) 						      General Commands Manual							   DIFF(1)

NAME
diff - print differences between two files SYNOPSIS
diff [-c | -e | -C n] [-br]file1 file2 OPTIONS
-C n Produce output that contains n lines of context -b Ignore white space when comparing -c Produce output that contains three lines of context -e Produce an ed-script to convert file1 into file2 -r Apply diff recursively to files and directories of EXAMPLES
diff file1 file2 # Print differences between 2 files diff -C 0 file1 file2 # Same as above diff -C 3 file1 file2 # Output three lines of context with every diff -c file1 file2 # Same diff /etc /dev # Compares recursively the directories /etc and /dev diff passwd /etc # Compares ./passwd to /etc/passwd DESCRIPTION
the same name, when file1 and file2 are both directories" difference encountered" Diff compares two files and generates a list of lines telling how the two files differ. Lines may not be longer than 128 characters. If the two arguments on the command line are both directories, diff recursively steps through all subdirectories comparing files of the same name. If a file name is found only in one directory, a diagnostic message is written to stdout. A file that is of either block special, character special or FIFO special type, cannot be compared to any other file. On the other hand, if there is one directory and one file given on the command line, diff tries to compare the file with the same name as file in the directory directory. SEE ALSO
cdiff(1), cmp(1), comm(1), patch(1). DIFF(1)
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