UNIX for Dummies Questions & Answers

Hi,

There is file on UNIX server named as fd40568-07082009.txt which get FTP'ed to UNIX on a daily basis. 07082009 of fd40568-07082009.txt represents the system date. This type of .txt gets FTP on a daily basis.

My requirement is to rename the fd40568-07082009.txt to fd40568-07072009.txt i.e systemdate - 1

I have gone through sysdate -1 in unix and How to get sysdate -1 threads but could not get proper answer.

version
Machine hardware: sun4u
OS version: 5.9
Processor type: sparc

Plz help.

Thankx!!
Rahul

Try this:

Code:

old_file=fd40568-07082009.txt
new_file=`echo $old_file | sed 's/\(.*\)-\([0-9]\{8\}\).txt/\1/'`-`TZ=CST+24 date +%m%d%Y`.txt
mv $old_file $new_file

This worked for me:
echo $old_file`date -d "1 day ago" +%m%d%Y.txt` | sed 's/\(.*\)-\([0-9]\{8\}\).txt/\1-/'