Login or Register to Ask a Question and Join Our Community


UNIX for Dummies Questions & Answers

awk - Rename output file, after processing, same as input file

 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers awk - Rename output file, after processing, same as input file
# 1  
Old 01-31-2015
awk - Rename output file, after processing, same as input file
I have one input file ABC.txt and one output DEF.txt. After the ABC is processed and created output, I want to rename ABC.txt to ABC.orig and DEF to ABC.txt. Currently when I am doing this, it does not process the input file as it cannot read and write to the same file. How can I achieve this?

Is it possible if I can put a time interval between the awk script and mv commands??

This would resolve my issue.


Example:

Code:
awk ' $1=="01" { print $2 $4}' ABC.txt > DEF.txt
mv ABC.txt ABC.orig
mv DEF.txt ABC.txt

ABC.txt
Code:
01  03  03  04

DEF.txt
Code:
01  08  AA FA

Last edited by High-T; 02-01-2015 at 02:35 PM..
# 2  
Old 01-31-2015
what exactly is the error and what exactly is your awk script doing?
As it looks, you are not reading and writing at the same time, can you explain further?
# 3  
Old 02-01-2015
Also, you awk example is incorrect, perhaps you mean the following?
Code:
awk ' $1=="01" { print $2 $4}' ABC.txt > DEF.txt

# 4  
Old 02-01-2015
Awk
Actually it does not show any error but does not process the file.
And you are right, the awk script i types was in incorrect format.
But even the corrected one is not processing the file.
I am trying this script in a unix box.
# 5  
Old 02-01-2015
What happens if you run:
Code:
awk ' $1=="01" { print $2 $4}' ABC.txt

Do you get the correct output ?

Otherwise, what is/was the exact error message that you are/were getting?
# 6  
Old 02-01-2015
I have tried the same script but it does not rename the DEF.txt to ABC.txt.
If i put
Code:
mv DEF.txt XYZ.txt

Then it works fine
Last edited by Scrutinizer; 02-01-2015 at 03:20 AM.. Reason: code tags
# 7  
Old 02-01-2015
I see, but what is the answer to my questions?
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk to reformat output if input file is empty, but not if file has data in it

The below awk improved bu @MadeInGermany, works great as long as the input file has data in it in the below format: input chrX 25031028 25031925 chrX:25031028-25031925 ARX 631 18 chrX 25031028 25031925 chrX:25031028-25031925 ARX 632 14... (3 Replies)
Discussion started by: cmccabe
3 Replies

2. UNIX for Dummies Questions & Answers

Redirect output to the same input file in awk

Hi, I want to compare a value from test file and redirect the o/p value to the same file input file 250 32000 32 128 Below is my code awk '{ if ($1 < "300") print $1 > /tmp/test}' test want to compare 250 < 300 then print 300 to the same place below is the... (24 Replies)
Discussion started by: stew
24 Replies

3. Programming

awk processing / Shell Script Processing to remove columns text file

Hello, I extracted a list of files in a directory with the command ls . However this is not my computer, so the ls functionality has been revamped so that it gives the filesizes in front like this : This is the output of ls command : I stored the output in a file filelist 1.1M... (5 Replies)
Discussion started by: ajayram
5 Replies

4. Shell Programming and Scripting

Recursive file processing from a path and printing output in a file

Hi All, The script below read the path and searches for the directories/subdirectories and for the files. If files are found in the sub directories then read the content of the all files and put the content in csv(comma delimted) format and the call the write to xml function to write the std... (1 Reply)
Discussion started by: Optimus81
1 Replies

5. Shell Programming and Scripting

processing an input file and then the output file

Hi. I am new to scripting and could really do with some advice on the best way to put a script together. Here is the scenario I am working to; - i will get files via ftp to a tmp directory on the server - all files will have a unique file name but with the same extension (.USM) - for each... (5 Replies)
Discussion started by: yabai
5 Replies

6. Shell Programming and Scripting

AWK Script to convert input file(s) to output file

Hi All, I am hoping someone can help me with some scripting I need to complete using AWK. I'm trying to process multiple fixed files to generate one concatenated fixed file in a standard format. The Input file is:- aaaa bbbbb ccccc 1 xxxx aaa bbb aaaa bbbbb ccccc 2 abcd aaa CCC... (9 Replies)
Discussion started by: jason_v_brown
9 Replies

7. Shell Programming and Scripting

Dynamic output file generation using a input text file with predefined output format

Hi, I have two files , one file with data file with attributes that need to be sent to another file to generate a predefined format. Example: File.txt AP|{SSHA}VEEg42CNCghUnGhCVg== APVG3|{SSHA}XK|"password" AP3|{SSHA}XK|"This is test" .... etc --------- test.sh has... (1 Reply)
Discussion started by: hudson03051nh
1 Replies

8. Shell Programming and Scripting

Pass input and output file as parameter to awk script

Hi, i am new to awk. I am using csv2pipe script(shown below) BEGIN { FS=SUBSEP; OFS="|" } { result = setcsv($0, ",") print } # setcsv(str, sep) - parse CSV (MS specification) input # str, the string to be parsed. (Most likely $0.) # sep, the separator between the values. # #... (6 Replies)
Discussion started by: bhaskarjha178
6 Replies

9. Shell Programming and Scripting

awk should output if one input file doesnt have matching key

nawk -F, 'FNR==NR{a= $3 ;next} $2 in a{print $1, 'Person',$2, a}' OFS=, filea fileb Input filea Input fileb output i am getting : (2 Replies)
Discussion started by: pinnacle
2 Replies

10. Shell Programming and Scripting

Writing output into different files while processing file using AWK

Hi, I am trying to do the following using AWK program. 1. Read the input data file 2. Parse the record and see if it contains errors 3. If the record contains errors, then write it into Reject file, else, write into usual output file or display it on the screen Here is what I have done -... (6 Replies)
Discussion started by: vidyak
6 Replies
Login or Register to Ask a Question