shell script to read the fields of text file line by line

anant123123 · #1 (**permalink**) 07-11-09, 13:55

Hi,

I need to read a text file from shell script line by line and copy the feilds of each line.

Below is the complete requirement.

I've text file which contains ...

pgm1 file11 file12 file13
pgm2 file21 file22
pgm3 file31 file32 file33

I'll give input as pgm1/pgm2/pgm3 etc.

the shell script has to read the text file and if the input given is pgm1 then the shell script shoud copy the file to some directory.
file directory is common for all the files.

when the input is pgm2 then the shell script should have statements for copying file21, file22 etc and so on.

I tried the file reading with WHILE DO and FOR LOOP and used CUT option to differentiate the feilds. But I'm getting all the records with the looping and I'm unable to cut exactly as the number of files for each program differs.

Can anybody suggest code which completes my requirement?
I'm using KSH.

Thanks,

mike_bike_kite · #2 (**permalink**) 07-12-09, 06:05

The following should work.
Just send all payments to the usual address.

Code:

#!/bin/sh

file=your_text_file.dat

cat $file | (
        read type files

        while test "$type" != ""
        do
                if test "$type" = "pgm1"
                then
                        echo cp $files directory_1
                fi

                if test "$type" = "pgm2"
                then
                        echo cp $files directory_2
                fi

                if test "$type" = "pgm3"
                then
                        echo cp $files directory_3
                fi

                read type files
        done
        )
exit 0

Mike

anant123123 · #3 (**permalink**) 07-13-09, 08:34

Thanks Mike,

It's working for me.
in addition to that, I need to find the files in two directories. that means the text file contain only file name and not the full path of the file. the shell script should search the file in two directories and copy from the available directory.

And also the shell script should be dynamic to accept the program (first field of the text file) and then proceed.

something like below..

cat file <text file> |
for pgmname=input pgm parmater
do
if the file11 is in dir1 then
cp /dir1/file11 /new_dir1
else if file11 is in dir2 then
cp /dir2/file11 /new_dir1
else exit
.......
....
for all other fields also
.....
....
done

mike_bike_kite · #4 (**permalink**) 07-14-09, 04:34

Quote:

Originally Posted by anant123123

It's working for me.
in addition to that, I need to find the files in two directories. that means the text file contain only file name and not the full path of the file. the shell script should search the file in two directories and copy from the available directory.

And also the shell script should be dynamic to accept the program (first field of the text file) and then proceed.