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Script to change file names

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# 1  
Old 09-15-2015
Script to change file names
I have a landing directory on my unix (solaris) server, that receives the following files:

Code:
MLH4301I AAOT-hhslog.610.20150805.txt
MLH4301I AAOT-hhslog.611.20150805.txt
MLH4301I AAOT-hhslog.612.20150805.txt
MLH4301I AAOT-hhslog.613.20150805.txt

and I need to add to this files the number 10000 (ten thousand) before the sequence (610, 611, 612, 613 and so on)
To become like this:

Code:
MLH4301I AAOT-hhslog.10000610.20150805.txt
MLH4301I AAOT-hhslog.10000611.20150805.txt
MLH4301I AAOT-hhslog.10000612.20150805.txt

Please can you help me in achieving this
# 2  
Old 09-15-2015
Hello fretagi,

Following may help you in same.
Code:
ls -lhtr AAOT-hhslog* | awk '{A=$NF;sub("AAOT-hhslog.","AAOT-hhslog.10000",$0);print "mv " A OFS $NF}'

Output will be as follows.
Code:
mv AAOT-hhslog.613.20150805.txt AAOT-hhslog.10000613.20150805.txt
mv AAOT-hhslog.612.20150805.txt AAOT-hhslog.10000612.20150805.txt
mv AAOT-hhslog.611.20150805.txt AAOT-hhslog.10000611.20150805.txt
mv AAOT-hhslog.610.20150805.txt AAOT-hhslog.10000610.20150805.txt

If you are happy with code and results above then you can use following.
Code:
ls -lhtr AAOT-hhslog* | awk '{A=$NF;sub("AAOT-hhslog.","AAOT-hhslog.10000",$0);print "mv " A OFS $NF}' | sh

Thanks,
R. Singh
# 3  
Old 09-15-2015
Hi Singh

Thank you very much, I will try now, but will it work for thousands of files?
# 4  
Old 09-15-2015
Hello fretagi,

It depends on the ARG_MAX value of your os(BASH in my case) else you will get Argument list too long
 error if it crosses that limit. You can check that limit by as follows.
Code:
cat /usr/include/linux/limits.h
#define ARG_MAX       131072    /* # bytes of args + environ for exec() */
 
getconf ARG_MAX
131072

Now to avoid that problem you can do as follows.
Code:
for i in AAOT-hhslog.*
do
 echo $i | awk '{A=$NF;sub("AAOT-hhslog.","AAOT-hhslog.10000",$0);print "mv " A OFS $NF}'
done

If you are happy with above code's result then use following.
Code:
for i in AAOT-hhslog.*
do
 echo $i | awk '{A=$NF;sub("AAOT-hhslog.","AAOT-hhslog.10000",$0);print "mv " A OFS $NF}' | sh
done

Thanks,
R. Singh
# 5  
Old 09-15-2015
Hi Singh!

my operating system is actually solaris 10 and I am using
Code:
 echo $SHELL
/sbin/sh

But can you explain that last piece of code (your last script) as I am still a begginer in writing scripts
# 6  
Old 09-15-2015
Hello fretagi,

Following may help you in same.
Code:
for i in AAOT-hhslog.*                                                                             ####### It will look for files starting named with AAOT-hhslog and so on.
do
 echo $i | awk '{A=$NF;sub("AAOT-hhslog.","AAOT-hhslog.10000",$0);print "mv " A OFS $NF}'   ######## now using awk to get the move command ready.
                                                                                            ######## Mentioning variable A to $NF, now subtituting word "AAOT-hhslog. to "AAOT-hhslog.10000 in each line, then printing mv A(which is the previous file_name) $0(new file name as per your requirement.)
done

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
fretagi
# 7  
Old 09-15-2015
Try
Code:
for i in MLH*; do echo "mv '$i' '${i/log./log.10000}'"; done
mv 'MLH4301I AAOT-hhslog.610.20150805.txt' 'MLH4301I AAOT-hhslog.10000610.20150805.txt'
mv 'MLH4301I AAOT-hhslog.611.20150805.txt' 'MLH4301I AAOT-hhslog.10000611.20150805.txt'
mv 'MLH4301I AAOT-hhslog.612.20150805.txt' 'MLH4301I AAOT-hhslog.10000612.20150805.txt'
mv 'MLH4301I AAOT-hhslog.613.20150805.txt' 'MLH4301I AAOT-hhslog.10000613.20150805.txt'

Remove echo when happy.
This User Gave Thanks to RudiC For This Post:
fretagi
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