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read_link.sh 470 B
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#!/bin/sh

TARGET_FILE=$1

cd "$(dirname $TARGET_FILE)"
TARGET_FILE=`basename $TARGET_FILE`

# Iterate down a (possible) chain of symlinks
while [ -L "$TARGET_FILE" ]
do
	TARGET_FILE=$(readlink "$TARGET_FILE")
	cd "$(dirname $TARGET_FILE)"
	TARGET_FILE=$(basename "$TARGET_FILE")
done

# Compute the canonicalized name by finding the physical path 
# for the directory we're in and appending the target file.
PHYS_DIR=`pwd -P`
RESULT=$PHYS_DIR/$TARGET_FILE
echo $RESULT