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Using Shell Script To Loop Program Through Multiple Text Files

 
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Top Forums UNIX for Dummies Questions & Answers Using Shell Script To Loop Program Through Multiple Text Files
# 8  
Old 10-27-2011
Quote:
Originally Posted by Corona688
If you can have your fortran program read from standard input and write to standard output, then it will be easily automated. Just redirect into and out of the program.

Your program may become actually simpler; no file-opening code at all Smilie

Code:
for FILE in *.txt
do
        ./myprogram < "$FILE" > "$FILE.out"
done

Sorry I know this is probably a very basic question but I have not been able to grasp this idea really of what you mean by standard input/standard output.

My current open statement reads as
OPEN(unit=10,file='nameofsinglefile.txt',status='old')
Would I adjust the above line to
file='$FILE.txt'

Any help would be greatly appreciated.
Thanks.
# 9  
Old 10-27-2011
I know nothing about Fortran, but by the power of Google:

Fortran Input/Output
Quote:
Preconnected Units

Three unit numbers are automatically associated with specific standard I/O files at the start of program execution. These preconnected units are standard input, standard output, and standard error:
  • Standard input is logical unit 5 (also Fortran 95 unit 100)
  • Standard output is logical unit 6 (also Fortran 95 unit 101)
  • Standard error is logical unit 0 (also Fortran 95 unit 102)
Typically, standard input receives input from the workstation keyboard; standard output and standard error display output on the workstation screen.
In all other cases where a logical unit number but no FILE= name is specified on an OPEN statement, a file is opened with a name of the form fort.n, where n is the logical unit number.
# 10  
Old 10-28-2011
Whenever I try to run this script, I get the error For: command not found and Do: command not found.
# 11  
Old 11-01-2011
What shell are you running it in?
# 12  
Old 11-03-2011
I'm running in Bash shell.

I have gotten past my original problem where it was just saying command not found. However, now I am getting the message that the file does not exist when I run through the shell script, however, if I run the fortran script with just one file it does run...so I know the files do exist. And they are all in the same directory.

My bash script is this
Code:
#!/bin/bash
# Running through Fortran Program used to find anomaly of Rain and Temperature

#FILES="/Users/jduncan/Desktop/rawdata/"

for File in *.txt
do
     ./runthrough.o "$File" 

done

And I simplified the fortran code to illustrate if it was running through the files correctly as
Code:
Program runthrough

IMPLICIT NONE

CHARACTER(31)::text,header,header2
CHARACTER(15)::station
CHARACTER(2)::state
CHARACTER(10)::county
REAL::lat,lon
INTEGER::i


OPEN(10,file='"$File"',status='old')

READ (10,'(a10,a15)') text, station
READ (10,'(a8,a2)') text, state
READ (10,'(a7,a10)') text, county
Do i=1,4
   READ (10,'(a)') text
ENDDO
READ (10,'(a27,f8.5)') text, lat
READ (10,'(a27,f8.5)') text, lon
!Do i=1,3
!   READ (10,'(a)') text
!ENDDO
READ (10,'(a)') text
READ (10,'(a)') header
READ (10,'(a)') header2

print*,header

END Program runthrough

# 13  
Old 11-03-2011
Code:
for File in *.txt

Here you say nothing about WHERE you are and so depending where you are , you might effectively have no *.txt...
# 14  
Old 11-03-2011
Do I need to declare a path even if I am in the same directory?

In that directory when I perform a ls *.txt I have approximately 200 files, and my .f90 code is within the same directory.
 
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