file renaming

larne · #1 (**permalink**) 10-13-2008

How can I rename files named like these

Code:

iq - 000001 - 2008.07.31 - 14.49.47 - location1.bin
iq - 000001 - 2008.07.31 - 14.49.47 - location12.bin
iq - 000008 - 2008.07.31 - 14.52.01 - location500.bin

to

Code:

iq_2008.07.31_14.49.47_location1.bin
iq_2008.07.31_14.49.47_location12.bin
iq_2008.07.31_14.52.01_location500.bin

I know how to loose the spaces, but I cant figure out how to skip the 00000X part of the file names. I cant substitute it since I don't know what number will be there? And I cant really cut it since I don't know how long the filename is since location may vary, or can I? Any ideas?
Best regards

Franklin52 · #2 (**permalink**) 10-13-2008

Try this:

Code:

ls -1 iq*.bin | awk '{print "mv "$0" "$1"_"$5"_"$7"_"$9}'

If the command is correct, pipe the result to sh:

Code:

ls -1 iq*.bin | awk '{print "mv "$0" "$1"_"$5"_"$7"_"$9}' | sh

Regards

cfajohnson · #3 (**permalink**) 10-13-2008

Quote:

Originally Posted by Franklin52

Code:

ls -1 iq*.bin | awk '{print "mv "$0" "$1"_"$5"_"$7"_"$9}'

There's no need for -1 when the output of ls is not going to a terminal. In fact, there's no need for ls at all:
Code:
printf "%s\n" iq*.bin | awk '{printf  "mv \"$0\" \"%s_%s_%s_%s\"\n", $1, $5, $7, $9}'
(printf is a shell builtin in all the major shells.)

treesloth · #4 (**permalink**) 10-13-2008

Quote:

Originally Posted by cfajohnson

There's no need for -1 when the output of ls is not going to a terminal. In fact, there's no need for ls at all:

Is there a reason why

Code:

printf "%s\n" iq*.bin

is preferable to

Code:

ls iq*.bin

?

cfajohnson · #5 (**permalink**) 10-14-2008

printf is built into all the major shells; ls is always an external command and therefore slower.

It is also overkill, since the shell expands the wildcard and sorts the file list.

summer_cherry · #6 (**permalink**) 10-14-2008

Code:

echo "iq - 000001 - 2008.07.31 - 14.49.47 - location1.bin" |
nawk -F" - " '{
print $1"_"$3"_"$4"_"$5
}'

Code:

iq_2008.07.31_14.49.47_location1.bin

larne · #7 (**permalink**) 10-13-2008

thank you very much for the clean solution
I just had to had add \" around "$0" since the file name contains spaces

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