Formatted print in for loop in bash

for ((i=000; i<010; i++)) do echo "$(printf '%04d' $i)"; done

for FILE in *.pdf; do pdfcrop $FILE; done

To work with arrays in a list

file=(hah1 hah2 hah3)

for list in "${file[@]}"; do echo $list; done


for ((i=28; i<243; i++)) do ((var= $i-$ii)); mv pv_"$(printf '%04d' $i)".jpg pv_"$(printf '%04d' $var)".jpg; done 

http://mywiki.wooledge.org/BashGuide/Arrays

Call list using loop variable

dirlist=(p45 p46 p46_highGam sigma0.01)

numlist=(0036 0033 0021 0060)

for i in "${!dirlist[@]}"; do 

dir=${dirlist[$i]}

num=${numlist[$i]}

echo $dir $num

cd $dir/postprocess_20May2021

mv phi045deg045deg45deposit_2keV.$num.flt phi045deg0deposit_2keV.$num.flt

mv phi045deg045deg45deposit_2keV.$num.flt.StQ.flt phi045deg045deposit_2keV.$num.flt.StQ.flt

mv phi045deg045deg45deposit_2keV.$num.flt.StU.flt phi045deg045deposit_2keV.$num.flt.StU.flt

cd ../../

done

Batch copy

cp $(cat fltlist.txt) test/.

Check endianity

echo -n I | od -to2 | awk '{ print substr($2,6,1); exit}'

or 

echo -n I | hexdump -o | awk '{ print substr($2,6,1); exit}'

will give 1 for little endian

http://serverfault.com/questions/163487/linux-how-to-tell-if-system-is-big-endian-or-little-endian