CODEWITHSUNDEEP
linux
Karthik K
Karthik K

Reputation: 25

Remove unwanted parts of many file names

I have file names like this:

MOD13Q1.A2013001.h25v08.005.2013018031021.hdf.250m_16_days_EVI.tif
MOD13Q1.A2013001.h25v08.005.2013018031021.hdf.250m_16_days_NDVI.tif
MOD13Q1.A2013001.h25v08.005.2013018031021.hdf.250m_16_days_VI_Quality.tif
MOD13Q1.A2013017.h25v08.005.2013039200748.hdf.250m_16_days_EVI.tif
MOD13Q1.A2013017.h25v08.005.2013039200748.hdf.250m_16_days_NDVI.tif
MOD13Q1.A2013017.h25v08.005.2013039200748.hdf.250m_16_days_VI_Quality.tif

I have need only specific details within the existing file name. I want the file names to be renamed like : A2013001_h25v08_EVI.tif

I have used the code

 for f in *.tif   
do    
c1= cut -c9-16 $f    
c2= cut -c18-23 $f     
c3= cut -c60-80 $f    
c= echo $c1$c2$c3 
echo mv "{$f}" "{$c}"  
done

But this code does not work. Is there another better method to do this? I am still new to Linux coding and hence any suggestions will be of great help.

Thanks

Upvotes: 0

Views: 92

Answers (2)

glglgl
glglgl

Reputation: 91099

If you have mmv installed, just do

mmv MOD13Q1.\*.*.005.2013039200748.hdf.250m_16_days_.*.tif \#1#2#3.tif

About your code:

for f in *.tif   
do    
c1= cut -c9-16 $f    
c2= cut -c18-23 $f     
c3= cut -c60-80 $f

Here, the backticks are missing:

c1=`echo "$f" | cut -c9-16`
c2=`echo "$f" | cut -c18-23`    
c3=`echo "$f" | cut -c60-80`

Alternatively, you could use

c1=$(echo "$f" | cut -c9-16)
c2=$(echo "$f" | cut -c18-23)    
c3=$(echo "$f" | cut -c60-80)

c= echo $c1$c2$c3

Here,

c=$c1$c2$c3

is enough.

Some other notes: You should become accustomed to using " around your variables unless explicitly not wanted.

If you had files like

MOD13Q1 A2013001 h25v08 005 2013018031021 hdf 250m_16_days_EVI.tif

(which would be perfectly valid and legitime)

your code would fail to work with them:

for i in *.tif; do
    mv "$i" "$i".bak
    mv $i $i.bak
end

would do two completely different things: the first one would actually rename the file, whicle the latter one would try to execute

mv MOD13Q1 A2013001 h25v08 005 2013018031021 hdf 250m_16_days_EVI.tif MOD13Q1 A2013001 h25v08 005 2013018031021 hdf 250m_16_days_EVI.tif.bak

which means to move/rename the files MOD13Q1, A2013001, h25v08, 005, 2013018031021, hdf, 250m_16_days_EVI.tif, MOD13Q1, A2013001, h25v08, 005, 2013018031021 and hdf to 250m_16_days_EVI.tif.bak.

Upvotes: 1

Aaron Digulla
Aaron Digulla

Reputation: 328724

Use mmv:

mmv -n "MOD13Q1.*.005.*.hdf.250m_16_days_*.tif" "#1_#3.tif"

If the output looks correct, remove the -n to actually rename the files.

Note: mmv isn't a standard command, you may have to install it using the system's package manager.

Upvotes: 1

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