Modify existing code for creating menu names in an interactive shell script - bash

Question

When i give the command awk NR==7 ABC.mod it gives me the title ('Add') I need which is present on the 7th line of the file Currently I am just able to read the title but I am not aware of how to append it to the output. Can somebody help me organize this so I can modify the code to get the expected menu output with minimal disruption (I hope) to the existing script?

Answer 1

Assuming you can pull out the "Add", "Delete" ... and other "titles" from the 7th line of each *.mod file, then you need to modify your script where it looks at the file a1.out somewhere before the line which seems to create the menu, namely: tr ' ' '\n' < ~/a1.out > ~/b.dat.
I say "assuming" because, even though you mention awk NR==7, I don't see where you are using it in the script. In any case, if you can get the "title" from the 7th line of a given *.mod file, then you can get the menu "name" from the file name (which seems to be the way you are constructing your menu) like this:
awk '{ln=length(ARGV[1]); if(NR==7) print substr(ARGV[1],0,ln-4)"..."$0}' ABC.mod
outputs:
ABC...Add
There's may be a shorter, easier way to do this using sed, but you mentioned awk.
For me at least, there's not really enough information to go on to help you much further. If you update your question someone may be able to give more concrete advice.
EDIT:
I'll post my work here in the hope that you find it useful. It is not a complete solution. I have to say, this is a strangely written application - with shell code and variables hardwired to temporary data to locations strewn about the file system. It's a bit hairy to try and set up a local version to try it out. Hopefully by experimenting and making modifications to the cod e you will learn more about how your application works and about shell programming in general. Extra advice: record your changes; sketch out how/where your application reads and writes its data; use comments in the source code to help you and others remember how the code works; make backups; use source control.
My assumptions:
pradee.sh looks like this (why does the file has a .sh extension - it seems more like a it defines some constants for your script)
% cat pradee.sh
HBKTM
ABC
HBKTM
CBC
HBKTM
DBC
HBKTM
IBC
HBKTM
MBCE
HBKTM
UBC
HBKTM
VBCM
Here's how I created my "test environment":
% for file in `grep -v HBKTM pradee.sh`; do touch $file.mod ; done
% ls
ABC.mod CBC.mod DBC.mod IBC.mod MBCE.mod UBC.mod VBCM.mod pradee.sh
% echo -e "_ctrl.jsp \n\n\n\n\n" > *.mod # mod files have required text+6 lines
% echo -e "_ctrl.jsp \n\n\n\n\n" > HBKTM.mod # this file seems special ?
% sed -i'' -e "7i\\[Ctrl-V Ctrl-J]
Add" ABC.mod
OR since the files now have 6 lines ... echo the menu title onto the last line:
% echo "Delete" >> DBC.mod
% echo "Insert" >> IBC.mod
... [continue inserting titles like "Add" "Delete" etc to the other *.mod files]
After that I think I have data files that mimic your set up. You tell me. Now, if I make a few small changes to your script (so the file locations don't remove overwrite my own files) and add the awk command I mentioned previously, here is what I end up with:
# menu_create.sh
# See http://stackoverflow.com/questions/17297671
rm -f *.dat
clear
cont="y"
while [ "$cont" = "y" ] # "$" is need for POSIX
do
echo -e "\n\nPlease Enter ONS Name : "
read ons
currpath=.
up=$(echo $ons|tr '[:lower:]' '[:upper:]')
#echo "\n ONS menu name \n"
#echo $up
if [ -f $up.mod ]; then
#in=$(grep -ri $up pradee.sh) # changed to following
# - how could this have worked ?
in=$(grep -v $up pradee.sh)
if [ -n "$in" ]; then
onsname=$(grep -ri "_ctrl.jsp" $up.mod)
#echo "onsname : $onsname"
if [ -n "$onsname" ]; then
echo -e "\n ONS menu name : $up "
echo $in > a1.dat
#echo "written to a1.dat\n"
#cat ~/a1.dat
#tr ' ' '\n' < ~/a1.dat > ~/a.dat
#cat ~/a.dat
sed "s/$up//g" a1.dat >a1.out
for i in `cat a1.dat`;
do
awk '{ln=length(ARGV[1]);if(NR==7) print substr(ARGV[1],0,ln-4)"..."$0}' $i.mod >> menu.dat ;
done
echo -e "\n FINUX Names \n"
#tr ' ' '\n' < a1.out > b.dat
tr ' ' '\n' < menu.dat > b.dat
cat b.dat
else
echo -e "ONS Name Not Valid !"
fi
else
echo -e "FINUX menu Name not found in our Repository"
fi
else
echo -e "\n Please Enter valid ONS name !!"
fi
echo -e "\n\n Press "y" to continue, Any other key to exit"
read cont
done
It gives me this output:
Please Enter ONS Name :
hbktm
ONS menu name : HBKTM
FINUX Names
ABC...Add
CBC...Cancel
DBC...Delete
IBC...Insert
MBCE...Modify
UBC...Undelete
VBCM...Verify
Press y to continue, Any other key to exit
q
I hope my response to your question helps you learn more about how to modify your application.