Shell script file test

Reason: adding code tags. Hi Bips. Can I request you to please add some comments so that It is more clear to understand? Did you cover all 6 Validation? Regards Niraj Bhatt. Hi Niraj, The script does the following: 1. Checks if the files header corresponds to the current date.

Checks if the file has more than one header it wil fail with error "record is corrept" 3. Checks the date in the header with the system date if ther is a missmatch it wil fail with "record not of todays date" 4. If there are more than one trailer record it wil give output "record is corrept" 5.

Every record between the header and trailer is considered as a Detail record. I was not able to check the consistancy of that as u did not give me any standard on that. The trailer count will match the records found if sucessful it wil give message "record is perfect" else fails with the message its corrept.

I have not considered output to be redirected to a file. Example: Code :. Code :. Shell script reading file slow.

I have shell program as below! C-Shell script help reading from txt file. I need to write a C-Shell script with these properties: It should accept two arguments on the command line. The first argument is the name of a file which contains a list of names, and the second argument is the name of a directory. Are you building any innovative solution for your students or recruitment?

Want to run JDoodle in-house? Custom Domain, White labelled pages for your institute? Your valuable input will help us improve this site please give your comments. Click here to see the languages currently supported. Add This. Thanks for your Input! Using ls -l command we read the file attributes of both the files and we extract the file permission using the cut command from column 2 to 10 , store in p1 and p2 variables. Using string comparison we check the equivalence of file attributes p1 and p2.

If both the permission are same then we print the permissions are same and permissions are printed. If the permissions are different then permissions of both the files are printed along with file names. In the above program first, we display the currently logged in users using who command. Collectives on Stack Overflow. Learn more. How to check if a file exists in a shell script Ask Question. Asked 5 years, 2 months ago. Active 7 months ago. Viewed k times. Kurt Peek Kurt Peek Possible duplicate of How do I tell if a regular file does not exist in Bash?

You must set one or more whitespace between opening square bracket "[" and option "-e" same as between filename and closing square bracket "]" — Konstantin Yaniv. Related: Why do we need a space around square brackets in Bash if. Add a comment. Active Oldest Votes. You're missing a required space between the bracket and -e :! The script seems to work now.

The main difference here is the fact that you are using "bash" scripting instead of "shell" scripting. Notice that the first line that you have added was! Because sh doesn't recognize that argument "-e" — Nick Cuevas.