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Full Discussion: awk - Rename output file, after processing, same as input file
Top Forums UNIX for Dummies Questions & Answers awk - Rename output file, after processing, same as input file Post 302933624 by High-T on Saturday 31st of January 2015 07:32:28 PM
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..
 

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LEARN ABOUT OSF1

mren

mren(1) 						      General Commands Manual							   mren(1)

NAME

       mren - mtools utility to rename an existing DOS file

SYNOPSIS

       mren [-v] sourcefile targetfile

OPTIONS

       Specifies verbose mode.	The new file name is displayed if the name supplied is invalid.

DESCRIPTION

       The  mren command renames an existing file on a DOS file system.  You can also use the mren command to rename directories.  Reasonable care
       is taken to create a valid DOS file name.  If an invalid DOS targetname is specified, the mren command changes the  name  and,  if  the	-v
       option is specified, prompts the user to accept or reject the new name.

       The  path  component of the targetfile argument, if supplied, is ignored.  That is, you cannot use the mren command to move a file from one
       subdirectory to another.

       DOS subdirectory names that contain the '/' or '' separator are supported.  If you use the '' separator or wildcards,	you  must  enclose
       file names in quotes to protect them from the shell.

       The mcd command can be used to establish the device and the current working directory (relative to DOS), otherwise the default is A:.

       Not  all  UNIX  file names are supported in the DOS world.  The mren command may have to change UNIX names to fit the DOS file name conven-
       tions. The following table shows some examples of file name conversions:

       -----------------------------------------------
       UNIX name     DOS name	Reason for the change
       -----------------------------------------------
       thisisatest   THISISAT	file name too long
       file.stuff    FILE.STU	extension too long
       prn.txt	     XRN.TXT	PRN is a device name
       .abc	     X.ABC	null file name
       hot+cold      HOTXCOLD	illegal character
       -----------------------------------------------

RESTRICTIONS

       You cannot use the mren command to move a file from one subdirectory to another.

EXIT STATUS

       The following exit values are returned: Success.  Failure.

ENVIRONMENT VARIABLES

       The following environment variables affect the execution of mren: If set, this variable names the file that contains the name of  the  cur-
       rent mtools working directory as established by the mcd command.  If this variable is not set, the file $HOME/.mcwd is used.

FILES

       Contains  the  name  of	the  current mtools working directory as established by the mcd command.  If this file does not exist, the default
       mtools working directory is A:.  Executable file

SEE ALSO

       Commands: mcd(1), mtools(1)

																	   mren(1)
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