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Renaming by manipulating strings

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# 1  
Old 10-21-2012
Renaming by manipulating strings
hello

does someone want to help me for this one ?


i want to rename file by inversing parts of filenames separated by the delimiter "--"



sometimes filenames have three strings :
Code:
aabb4ccdd eeffgg -- 5566 -- aa78bb ccd eef gghhi.ext

to
Code:
aa78bb ccd eef gghhi -- 5566 -- aabb4ccdd eeffgg.ext

Code:
aabbcc -- 55 -- aab667ccdd ee.ext

to
Code:
aab667ccdd ee -- 55 -- aabbcc.ext

Code:
556aa -- aabb -- 7788.ext

to
Code:
7788 -- aabb -- 556aa.ext

sometimes there are only two strings :
Code:
aabbccdd eef -- gghh iijjkkl.ext

to
Code:
gghh iijjkkl -- aabbccdd eef.ext

when there are two strings i think the solution is to inverse strings separated by "--"



i've got filename like these one too, i'd like to put the digits at at the end to the beginning :
Code:
aabbccdde -- ffgghh iijjkkll5566778.ext

to
Code:
5566778 aabbccdde -- ffgghh iijjkkll.ext

Code:
aab55c -- ddeeffgghh5566.ext

to
Code:
5566 aab55c -- ddeeffgghh.ext

thanks for you help !
Last edited by mc2z674gj; 10-21-2012 at 11:37 AM.. Reason: code tags
# 2  
Old 10-21-2012
for above two case try this...

Code:
for i in *.ext
do
file_name=$(echo "$i" | awk -F " -- " '{split($NF,a,".");s=$1;$1=a[1];$(NF)=s"."a[2]}1' OFS=" -- ")
mv $i $file_name
done

for last having numeric at the end of file..

Code:
for i in *[0-9].ext
do
file=$(echo "$i" | awk -F "" '{for(i=1;i<=NF;i++){if($i ~ /[A-z]/){s=""}else{if($i == "."){print s}else{s=s?s""$i:$i}}}}')
file_name=$(echo "$i" | awk -v RPL="$file" '{sub(RPL,"",$0);print RPL,$0}')
mv $i $file_name
done

Last edited by pamu; 10-21-2012 at 06:05 AM..
This User Gave Thanks to pamu For This Post:
mc2z674gj
# 3  
Old 10-21-2012
1>Verify is these are the conditions you require by just printing the mv command
Code:
ls *ext | perl -F"--" -alne '{if($#F==1){
if($F[1]=~/(\d+).ext/){ $p=$1;$F[0]=~s/^/$p /g;$F[1]=~s/$p//;print "mv \"$_\" \"".join(" -- ",@F)."\"" ;}
else { ($F[0],$F[1])=($F[1],$F[0]);$F[0]=~s/.ext//;$F[1]=~s/ *$/(.ext|^ *)/;print "mv \"$_\" \"".join(" -- ",@F)."\"" ;}
}else{ ($F[0],$F[2])=($F[2],$F[0]);$F[0]=~s/.ext//;$F[2]=~s/ *$/(.ext|^ *)/;;print "mv \"$_\" \"".join(" -- ",@F)."\"" ;}
}'

2>Once you are sure of what you want execute it
Code:
ls *ext | perl -F"--" -alne '{if($#F==1){
if($F[1]=~/(\d+).ext/){ $p=$1;$F[0]=~s/^/$p /g;$F[1]=~s/$p//;print "mv \"$_\" \"".join(" -- ",@F)."\"" ;}
else { ($F[0],$F[1])=($F[1],$F[0]);$F[0]=~s/(.ext|^ *)//;$F[1]=~s/ *$/.ext/;print "mv \"$_\" \"".join(" -- ",@F)."\"" ;}
}else{ ($F[0],$F[2])=($F[2],$F[0]);$F[0]=~s/(.ext|^ *)//;$F[2]=~s/ *$/.ext/;;print "mv \"$_\" \"".join(" -- ",@F)."\"" ;}
}' | sh

Last edited by msabhi; 10-21-2012 at 06:06 AM..
This User Gave Thanks to msabhi For This Post:
mc2z674gj
# 4  
Old 10-21-2012
Code:
for i in *[0-9].ext 
do 
file=$(echo "$i" | awk -F "" '{for(i=1;i<=NF;i++){if($i ~ /[A-z]/){s=""}else{if($i == "."){print s}else{s=s?s""$i:$i}}}}') 
file_name=$(echo "$i" | awk -v RPL="$file" '{sub(RPL,"",$0);print RPL,$0}') 
mv $i $file_name 
done

maybe your script works but my level of understandings don't allow me to tell you anything on it !
Last edited by mc2z674gj; 10-21-2012 at 11:43 AM..
# 5  
Old 10-21-2012
Is there any reason why all of that code is on a single line? Do you think that helps your 'level of understanding'?

For me, it's unreadable.

edit: you updated it. It's marginally more readable. Smilie
Last edited by Scott; 10-21-2012 at 12:02 PM.. Reason: ...
# 6  
Old 10-21-2012
Code:
ls *ext | perl -F"--" -alne '{if($#F==1){ 
if($F[1]=~/(\d+).ext/){ $p=$1;$F[0]=~s/^/$p /g;$F[1]=~s/$p//;print "mv \"$_\" \"".join(" -- ",@F)."\"" ;} 
else { ($F[0],$F[1])=($F[1],$F[0]);$F[0]=~s/(.ext|^ *)//;$F[1]=~s/ *$/.ext/;print "mv \"$_\" \"".join(" -- ",@F)."\"" ;} 
}else{ ($F[0],$F[2])=($F[2],$F[0]);$F[0]=~s/(.ext|^ *)//;$F[2]=~s/ *$/.ext/;;print "mv \"$_\" \"".join(" -- ",@F)."\"" ;} 
}' | sh

for moving numeric to the beginning, this script works perfectly !

???
i have a question can the script is capable to rename directories
# 7  
Old 10-21-2012
Quote:
Originally Posted by mc2z674gj
Code:
ls *ext | perl -F"--" -alne '{if($#F==1){ 
if($F[1]=~/(\d+).ext/){ $p=$1;$F[0]=~s/^/$p /g;$F[1]=~s/$p//;print "mv \"$_\" \"".join(" -- ",@F)."\"" ;} 
else { ($F[0],$F[1])=($F[1],$F[0]);$F[0]=~s/(.ext|^ *)//;$F[1]=~s/ *$/.ext/;print "mv \"$_\" \"".join(" -- ",@F)."\"" ;} 
}else{ ($F[0],$F[2])=($F[2],$F[0]);$F[0]=~s/(.ext|^ *)//;$F[2]=~s/ *$/.ext/;;print "mv \"$_\" \"".join(" -- ",@F)."\"" ;} 
}' | sh

for moving numeric to the beginning, this script works perfectly !
I believe this script works for all your conditions..

???
i have a question can the script is capable to rename directories
Can you please give me some examples before i can answer you...
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