Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Files exists with same name and not empty
Top Forums Shell Programming and Scripting Files exists with same name and not empty Post 303003484 by jim mcnamara on Thursday 14th of September 2017 10:08:53 AM
Old 09-14-2017
Just using simple commands:
Code:
export ok=0   # means files are there and non-empty

test_sz() {  # function to return 0 or 1
{
    sz="$1"
    sz=$( wc -c "$sz)
    sz=${sz:0:1}  # first character of sz string
    retval=0   # assume failure
    [ $sz -gt 0 ]  && retval=1
    return retval
}
[[ -e 1.txt && -e 2.txt && 3.txt ]] &&  ok=1 || echo 'files missing'
if [ ok -eq 1 ]; then 
   [[ $(test_sz 1.txt) -eq 0 || $(test_sz 2.txt) -eq 0  || $(test_sz 3.txt) -eq 0  ]] && ok=0
fi
if  [ ok -eq 0 ] ; then
   echo 'file(s) did not pass requirements'
   exit 1
fi
# rest of script here

This can be shortened, but it is meant to be a clear example.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

File exists and is empty

I've got a script with this snippet: if then I know that the -s indicates that the file exists and is not empty. How can I specify that the file exists, but is empty? I thought I could do: if ] then But this generates a "else unmatched" error on the else that follows. (5 Replies)
Discussion started by: dstinsman
5 Replies

2. Shell Programming and Scripting

HOW TO CHECK ONLY .C FILES EXISTS OR NOT IN A FOLDER using IF in C shell script?

Hi friends.. I hav a problem.... I dont know how to check .c files exists r not in a folder using IF in C shell script actually i tried like this if(=~ *.c) even though some .c files or there in the current folder..it is not entering int o the if control statement...... (17 Replies)
Discussion started by: p.hemadrireddy
17 Replies

3. Shell Programming and Scripting

Copy Files to Dir and Check If File Exists

Hi everyone. I am trying to write a bash script that will copy files from one directory to another but I need to be able to check the directory that I'm copying the files to and see if the file already exists. If it does I need to add a number at the end of the copied file. Thanks for your help. (3 Replies)
Discussion started by: snag49ers
3 Replies

4. Shell Programming and Scripting

How to see the list of files which exists with nonzero bytes

Hi, I would like to see the file list which contains the data. Ex : - When I enter the "ls -ltr" command it will show all the files which are exists in the directory, But I want only those files list which are non zero byte by using only ls command. I knew that I can write a script with... (12 Replies)
Discussion started by: kandi.reddy
12 Replies

5. Shell Programming and Scripting

Find records between two files which are not exists in one another in one

Hello all, Would like to know how to find records between two files which are not exists in one another in one. For example: I've two files "fileA" and "fileB" and want to find record from "fileB" which does not exists in "fileA". fileA -------- ABCD DEFG GHIJ KLMN NOPQ RSTU VUWX... (5 Replies)
Discussion started by: nvkuriseti
5 Replies

6. Shell Programming and Scripting

check if files exists

i writing a program that checks if any .txt files exist in the current directory if it does, then it lists the files... i have got everything right, except the validation part doesnt work! .... if then ls *.txt else echo "file not found" everytime it tells me file not found!! by... (3 Replies)
Discussion started by: bshell_1214
3 Replies

7. UNIX for Dummies Questions & Answers

check if two files exists at the same time in one location

Hi friends, I am trying to check if the two files i am expecting are created in a specific location. if both files does not exist, do an echo if -a ]; then echo "files not found" fi It gives me the following message: bash: Please help! :) (3 Replies)
Discussion started by: kokoro
3 Replies

8. UNIX for Dummies Questions & Answers

Outputting 1 file per row if pattern exists between files

I have many files that can have various amounts of rows. I essentially want to output each row into a new file if a pattern is matched between two files. I have some code that does something similar but I want it to output every single input row from every file into a separate output file; that... (5 Replies)
Discussion started by: verse123
5 Replies

9. Shell Programming and Scripting

How to check more than 1 file specified files exists?

Hi all, One of my script crated created 2 files in a dirs Output.log and Output.tmp. Now in another script i need to check if both of the above mentioned files are present in a directory or not. I know to check one file but need to check both the files. Anyone could please tell me how... (3 Replies)
Discussion started by: girijajoshi
3 Replies

10. UNIX for Beginners Questions & Answers

Code for checking if certain no of files exists

Hi, I am writing the shell script in ksh to check certain no of files exists,In my case there are 7 files exist like below Sales1_timstamp.csv Sales2_timstamp.csv Sales3_timstamp.csv Sales4_timstamp.csv Sales5_timstamp.csv Sales7_timstamp.csv Sales7_timstamp.csv Once all the files... (4 Replies)
Discussion started by: SRPR
4 Replies

LEARN ABOUT DEBIAN

bup-margin

bup-margin(1)						      General Commands Manual						     bup-margin(1)

NAME

       bup-margin - figure out your deduplication safety margin

SYNOPSIS

       bup margin [options...]

DESCRIPTION

       bup margin  iterates  through  all  objects  in	your  bup repository, calculating the largest number of prefix bits shared between any two
       entries.  This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.

       For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45.  That  means  a  46-bit
       hash  would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
       its first 46 bits.

       The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects.  Since SHA-1 hashes have 160 bits,
       that  leaves 115 bits of margin.  Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
       with far fewer objects.

       If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see	if
       you're getting dangerously close to 160 bits.

OPTIONS

       --predict
	      Guess  the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
	      from the guess.  This is potentially useful for tuning an interpolation search algorithm.

       --ignore-midx
	      don't use .midx files, use only .idx files.  This is only really useful when used with --predict.

EXAMPLE

	      $ bup margin
	      Reading indexes: 100.00% (1612581/1612581), done.
	      40
	      40 matching prefix bits
	      1.94 bits per doubling
	      120 bits (61.86 doublings) remaining
	      4.19338e+18 times larger is possible

	      Everyone on earth could have 625878182 data sets
	      like yours, all in one repository, and we would
	      expect 1 object collision.

	      $ bup margin --predict
	      PackIdxList: using 1 index.
	      Reading indexes: 100.00% (1612581/1612581), done.
	      915 of 1612581 (0.057%)

SEE ALSO

       bup-midx(1), bup-save(1)

BUP

       Part of the bup(1) suite.

AUTHORS

       Avery Pennarun <apenwarr@gmail.com>.

Bup unknown-															     bup-margin(1)
All times are GMT -4. The time now is 11:43 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy