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Top Forums Shell Programming and Scripting If then else - Retry operation Post 302844733 by kcpoole on Tuesday 20th of August 2013 01:07:24 AM
Old 08-20-2013
If then else - Retry operation

I need to read a file line by line, then depending on the contents of each line, type in a code that will get written to an array.

The problem I have is when I ask the user to confirm the input code, if it is wrong, how do i Return to ask again?
Any thing I try increments the file to the next line where I need to retry the previous incorrectline.?

I cannot find any examples where aquestion asked but the fail mode os to go back and retry to original option. They all show do one thing or another, but not do one thing or retry.

Thanks
Ken

the contents of FILE.EXT
Code:
"D001","50M Run","50M"
"D003","100M Run","100M"
"D004","200M Run","200M"

My script to do the work
Code:
#!/bin/bash
# Put Values in an myarrayname and read them back
file="FILE.EXT"     # input filename

while read line ;do
      wardevent=${line:3:2}                        # find the wardells Event code 
      eventnam=$(echo $line | cut -d '"' -f4)        # Extract the event

read -p "Enter the code for the Center event $eventnam  - " mmevent </dev/tty

read -p "Is this Event Code correct? y/n " yes </dev/tty
    if [ "$yes" == "y" ]
        then myarrayname["$wardevent"]="$mmevent"    # Write new line to Array and Continue to next entry
        else exit                                    #Ask again to redo line
    fi 
done <"$file"

 

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BUILDAPP(1)							   User Commands						       BUILDAPP(1)

NAME
buildapp - application to create common lisp images SYNOPSIS
buildapp --output OUTPUT-FILE [--flag1 value1 ...] DESCRIPTION
Required flags: --output OUTPUT-FILE Use OUTPUT-FILE as the name of the executable to create Entry-point flags: --entry NAME Use the function identified by NAME as the executable's toplevel function. Called with SB-EXT:*POSIX-ARGV* as its only argument. If NAME has a colon, it is treated as a package separator, otherwise CL-USER is the implied package. --dispatched-entry DNAME Specify one possible entry function, depending on the name of the file that is used to start the application. The syntax of DNAME is APPLICATION-NAME/ENTRY-NAME. If the name used to start the executable matches APPLICATION-NAME, use ENTRY-NAME as the entry point. This can be used to choose one of many possible entry points by e.g. symlinking names to the application executable. If APPLICA- TION-NAME is empty, the specified ENTRY-NAME is used as a default if no other application names match. There may be any number of dispatched entry points, but only one default. Action flags: --load FILE Load FILE. CL:*PACKAGE* is bound to the CL-USER package before loading --load-system NAME Load an ASDF system identified by NAME --require NAME Use CL:REQUIRE to load NAME --eval CODE Use CL:EVAL to evaulate CODE. The code is read with CL:READ-FROM-STRING in the CL-USER package There may be any number of load/load-system/require/eval flags. Each is executed in command-line order before creating an executable. Load path flags: --load-path DIRECTORY When handling a --load, search DIRECTORY for files to load --asdf-path DIRECTORY When handling a --load-system, search DIRECTORY for ASDF system files to load --asdf-tree DIRECTORY When handling a --load-system, search DIRECTORY and all its subdirectories for ASDF system files to load There may be any number of load-path/asdf-path/asdf-tree flags. asdf-path arguments take precedence over asdf-tree arguments. Other flags: --help Show this usage message --logfile FILE Log compilation and load output to FILE --sbcl PATH-TO-SBCL Use PATH-TO-SBCL instead of the sbcl program found in your PATH environment variable For the latest documentation, see http://www.xach.com/lisp/buildapp/ buildapp 1.1 July 2010 BUILDAPP(1)
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