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07-24-2008
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Bash and Awk for creating directories and moving files
I have a security system that FTPs the camera files to my machine, however I want to sort the pictures (taken every 30s) into directories by hour.
Every picture uses the following file format. yymmddhhmmsstt.jpg (where tt is the milliseconds) I am thinking the for loop is best for file in *.jpg do ?here? done I know its very vague, however the end result is I am guessing use awk (or better?) to create variables from the yy mm dd hh parts of the filenames, then creating directories based on those variables nested with a check to see if the directory exists, creating the directory if it doesnt. i.e. (the way I imagine it working, I dont know how to actually construct the script to do this) for file in 08072400123200.jpg do %y=08 %m=07 %d=24 %h=00 if not exist directory %y - mkdir %y if not exist directory %y/%m - mkdir %y/%m if not exist directory %y/%m/%d - mkdir %y/%m/%d if not exist directory %y/%m/%d/%h - mkdir %y/%m/%d/%h mv %y%m%d%h*.jpg %y/%m/%d/%h done Moving all the pictures taken within that hour into the respective subdirectories. Any help would be much appreciated. 
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07-24-2008
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using bash, you should start reading up here. It shows you how to get substrings.
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07-24-2008
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What I have so far, that I imagine should work (but doesnt) is (and isnt very elegant or sane)
Code:
#!/bin/bash
for file in *.jpg; do
set yy = `echo $file | awk '{split($0,a,""); print a[1]a[2]}'`
set mm = `echo $file | awk '{split($0,a,""); print a[3]a[4]}'`
set dd = `echo $file | awk '{split($0,a,""); print a[5]a[6]}'`
set hh = `echo $file | awk '{split($0,a,""); print a[7]a[8]}'`
if [ -d $yy ]; then
if [ -d $yy/$mm ]; then
if [ -d $yy/$mm/$dd ]; then
if [ -d $yy/$mm/$dd/$hh ]; then
mv $yy$mm$dd$hh*.jpg $yy/$mm/$dd/$hh/$file
elif
mkdir $yy/$mm/$dd/$hh
exit 1
fi
elif
mkdir $yy/$mm/$dd
exit 1
fi
elif
mkdir $yy/$mm
exit 1
fi
elif
mkdir $yy
exit 1
fi
done
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07-24-2008
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Even modifying for various shell stupidity doesnt help
./filter.sh: line 17: syntax error near unexpected token `fi' ./filter.sh: line 17: ` fi' Code:
#!/bin/bash -x
for file in *.jpg; do
YY = "echo $file | awk '{split($0,a,""); print a[1]a[2]}'"
MM = "echo $file | awk '{split($0,a,""); print a[3]a[4]}'"
DD = "echo $file | awk '{split($0,a,""); print a[5]a[6]}'"
HH = "echo $file | awk '{split($0,a,""); print a[7]a[8]}'"
if [ -d $YY ]; then
if [ -d $YY/$MM ]; then
if [ -d $YY/$MM/$DD ]; then
if [ -d $YY/$MM/$DD/$HH ]; then
mv $YY$MM$DD$HH*.jpg $YY/$MM/$DD/$HH/$file
elif
mkdir $YY/$MM/$DD/$HH
fi
elif
mkdir $YY/$MM/$DD
fi
elif
mkdir $YY/$MM
fi
elif
mkdir $YY
fi
done
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07-24-2008
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We do not have to test for individual directory level 'cos if the bottom directory exists, the parent level should exist. Also, mkdir -p will make all the non-existing parent directories. Also, I introduce 'short circurt' && to ensure directory exist before I move the file.
We can also avoid all the repeating code using in extracting yy/mm/dd/hh by using 'set --' and sed. sed will change 2 digits with 2 digits + space so that it can put the result back to "set --" to set the positional variables accordingly This is my contribution, it should work (even on sh) Code:
for i in *.jpg do # yy is $1, mm is $2, dd is $3, hh is $4 set -- `echo $i | sed -e 's/\([0-9][0-9]\)/\1 /g'` dir="$1/$2/$3/$4" [ ! -d $dir ] && mkdir -p $dir && mv $i $dir done
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07-24-2008
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Well, its working (for those out there that stumble across this site for a similar script)
Its not elegant, sane or other ... but it works. If the better experienced here can clean it up and solve the elegant/sane issues then it would be great  Code:
#!/bin/bash -x
for file in *.jpg; do
YY=`echo $file | awk '{split($0,a,""); print a[1]a[2]}'`
MM=`echo $file | awk '{split($0,a,""); print a[3]a[4]}'`
DD=`echo $file | awk '{split($0,a,""); print a[5]a[6]}'`
HH=`echo $file | awk '{split($0,a,""); print a[7]a[8]}'`
if [ -d $YY ]
then
if [ -d $YY/$MM ]
then
if [ -d $YY/$MM/$DD ]
then
if [ -d $YY/$MM/$DD/$HH ]
then
mv $YY$MM$DD$HH*.jpg $YY/$MM/$DD/$HH
else
mkdir $YY/$MM/$DD/$HH
fi
else
mkdir $YY/$MM/$DD
fi
else
mkdir $YY/$MM
fi
else
mkdir $YY
fi
done
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