Shell Programming and Scripting

awk 'NR==1{$NF=$NF" TEXT"}1' myfile

> tempfile && mv tempfile myfile

awk: NR=="${chosenline}"{$NF=$NF" ${enteredtext}"}1

awk -v L="$chosenline" -v T="$enteredtext" 'NR==L{$NF=$NF T}1' myfile

awk 'NR==1{ = TEXT}1' myfile

#!/bin/bash
#
#
#
#
#
#Adds username to .group file with prompts
#
########################################

# Lets the user know that they will have a backup of the .group file

clear

echo "==================================================="
echo "Welcome to the Report Access Tool.  As a precaution"
echo "a copy of the customer .group file will be copied  "
echo "to your home directory before the command completes"
echo "PRESS ENTER TO CONTINUE .......................  "
echo "==================================================="

read


clear

# prompt for username

echo "================================================="
echo "Enter the username that needs to access reports?"
echo "================================================="

read EmonUser

clear

# get customer

echo "================================================="
echo "  Which customer's reports are they accessing?"
echo "================================================="

read customer




# here is where we are sending a backup of the file, before doing our work, just in case
# commented out for testing
cp $customer.group ~/$customer.group.bak


# initiate a loop sequence that will allow the user to be added to multiple groups

while [ "$loop" != "n" ]
do

clear

echo "================================================="
echo "  Which report does this user need access to?"
echo "================================================="

# this line uses awk to display the group names of all lines in the file
awk -F':' '{ print NR " " $1 }' $customer.group


read reportline




# THIS IS THE COMMAND THAT HAS THE ISSUE. SET AS VARIABLE ONLY FOR DEBUGGING
keycommand="awk 'NR=="${reportline}"{\$NF=\$NF\" "${EmonUser}"\"}1' $customer.group"

echo $keycommand


# uncomment this read line to debug the above  command with echo
read
# ABOVE THIS LINE IS ONLY USED AT THIS TIME FOR DEBUGGING the results of echo $keycommand at this point are what needs to run
# once that piece works, I will append the > AddToGroup.tmp && mv AddToGroup.tmp $customer.group


clear

echo "====================================================="
echo "Do you want to add this user to another report? (Y/N)"
echo "====================================================="

read doitagain

# nested loop will repeat first loop until they answer no to adding to another group.


while [ "doitagain" != "n" ]
do

# case statment will exit this loop if they want to add to another report
# or will exit this loop, and then close the first loop, ending the script for no
# if the input is not Y or N, second loop starts again, forcing a valid answer
case $doitagain
in
[nN]) doitagain="n" ; loop="n" ; clear; break;;
[yY]) doitagain="y" ; break;;
   *) clear; echo "====================================================="; echo "Invalid action.  Add to another report?  Y or N"; echo "====================================================="; read doitagain;;
esac

done

# cleans up the temp file created
#rm AddToGroup.tmp

done

awk 'NR=='$reportline' {$NF=$NF" '$EmonUser'"} 1' $customer.group

awk 'NR==L {$NF=$NF" "U} 1' L=$reportline U=$EmonUser $customer.group