shell_循环中改变循环外的变量

sys_include_dir=""
for var in $(find /usr /lib -type d -a -name include)
do
    sys_include_dir+="${var}:"
done

sys_include_dir=$(
find /usr /lib -type d -a -name include | while read var
do
    echo -n "${var}:"
done
)

使用HERE-Document

#!/bin/sh
OUTFILE=`ls -l | grep -v total`
while read line
do
  all="$all $line"
  echo $line
done <<EOF
$OUTFILE
EOF

echo "all = " $all

来自文件

cat file | while

while read LINE
do
    echo "${LINE}"
done<file

while read LINE
do
    echo "${LINE}"
done<<EOF
$(cat file)
EOF