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x="abc|def|ghi|jkl"
echo "${x%%|*}"
echo "${x#*|}"
y="${x#*|}"
x="${x#${y}|}"
echo "${x%%|*}"
echo "${x#*|}"


The above code give this output:



abc|def|ghi|jkl

abc|def|ghi|jkl

...

I have to write a program to read data from files and then format into another file. However, I face a strange problem related to control character that I can't understand and solve.

The source...