怎么识别带有环境变量的值?

wsryyffs66

cat test.txt
${BOSS_BILL_DL}/gsm/dla

cat test2.sh
v_m_path=`cat test.txt`

echo "v_m_path:"$v_m_path
total_num=`ls -l $v_m_path|grep -v ^d|grep -v "total"|wc -l`
echo "total_num:"$total_num


执行shell

test2.sh
v_m_path{BOSS_BILL_DL}/gsm/dla
${BOSS_BILL_DL}/gsm/dla not found
total_num: 0

实际上${BOSS_BILL_DL}/gsm/dla目录是存在的，怎么能识别出${BOSS_BILL_DL}值？

longstudio

BOSS_BILL_DL必须是全局环境变量，或者export到子shell

wsryyffs66

BOSS_BILL_DL必须是全局环境变量，或者export到子shell
longstudio 发表于 2011-10-08 12:42

cat test2.sh
   
export BOSS_BILL_DL=/billdata31/billdata
v_m_path=`cat test.txt`

echo "v_m_path:"$v_m_path
total_num=`ls -l $v_m_path|grep -v ^d|grep -v "total"|wc -l`
echo "total_num:"$total_num

还是没有识别出来啊,帮忙看一下是哪的问题.

wsryyffs66

zooyo 发表于 2011-10-08 12:52

   

test2.sh
v_m_path{BOSS_BILL_DL}/gsm/dla
${BOSS_BILL_DL}/gsm/dla not found
total_num: 0

snan4love

无内容

wsryyffs66

eval total_num=`ls -l $v_m_path|grep -v ^d|grep -v "total"|wc -l`
snan4love 发表于 2011-10-08 13:00

    还是不行.

cat test2.sh
export BOSS_BILL_DL=/billdata31/billdata
v_m_path=`cat test.txt`

echo "v_m_path:"$v_m_path
eval total_num=`ls -l $v_m_path|grep -v ^d|grep -v "total"|wc -l`
echo "total_num:"$total_num
[/billing/user/monitor]$



test2.sh
v_m_path{BOSS_BILL_DL}/gsm/dla
${BOSS_BILL_DL}/gsm/dla not found
test2.sh[5]: 0:  not found
total_num:

ly5066113

回复 7# wsryyffs66


eval 加错地方了，加这里：

eval v_m_path=`cat test.txt`

wsryyffs66

回复  wsryyffs66


   
还是给你说详细点吧，你想在脚本A中export一个变量，希望脚本B来调用对吧，那 ...
zooyo 发表于 2011-10-08 13:08

    试了一下还是有问题