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如何在unix shell脚本中转​​义一系列通配符？

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如何在unix shell脚本中转​​义一系列通配符？

我需要在 unix crontab 中执行以下 Oracle SQL。查询如下： 

select count(*)
from tbaadm.htd
where cust_id is not null and
pstd_flg = 'Y' and
del_flg = 'N' and
tran_date =  (select db_stat_date-1 from tbaadm.gct) and
REGEXP_LIKE(tran_particular,'[^[:alnum:] ''`~!@#$%^&*-_{};":/.,<>?()]');

我在每个通配符之前设置了转义字符，但仍然收到错误。所以我编写了首先选择计数的 crontab。但我一次又一次地收到错误。以下是我的 crontab 中的相关内容： 

. $HOME/.profile

function dbconstants
{
USER="user"
PASS="password"
MAIL_BODY_PATH="/home/admin/CRONTAB_SHELL/"
MAIL_BODY=$MAIL_BODY_PATH"mail.txt"
}

function checkcount
{
COUNT=`sqlplus -s $USER/$PASS@proddb <<EOF
#connect $USER/$PASS@proddb;
set pagesize 0
SET ESCAPE '\'
select count(*)
from tbaadm.htd
where cust_id is not null and
pstd_flg = 'Y' and
del_flg = 'N' and
tran_date =  (select db_stat_date-1 from tbaadm.gct) and
REGEXP_LIKE(tran_particular,'[^[:alnum:] \'\'\`\~\!\@\#\$\%\^\&\*\-\_\{\}\;\"\:\/\.\,\<\>\?\(\)\]\'\)\;
EOF`
echo $COUNT
echo $COUNT | sed 's/^[ \t]*//;s/[ \t]*$//' |& read -p COUNT1
}
function fetchdetails
{
`sqlplus -s $USER/$PASS@finratna <<EOF >$MAIL_BODY
set feed off pages 0 trimspool on
set pagesize 60
set linesize 9999
set trim on
set head off
SET ESCAPE '\'
alter session set nls_date_format='DD-MM-YYYY';
select tran_date|| '|,' ||tran_id|| '|,' ||part_tran_srl_num|| '|,' ||tran_particular|| '|,' ||REGEXP_REPLACE
(tran_particular,'[^[:alnum:] ''\`~!@#$%^&*-_{};":/.,<>?()]','') reg_par
from tbaadm.htd
where cust_id is not null and
pstd_flg = 'Y' and
del_flg = 'N' and
tran_date =  (select db_stat_date-1 from tbaadm.gct) and
REGEXP_LIKE(tran_particular,'[^[:alnum:] ''\`~!@#$%^&*-_{};":/.,<>?()]');
EOF`
}
function deletefile
{
        rm -f $MAIL_BODY
}

dbconstants
checkcount
if [ "$COUNT" -gt 0 ]
then
fetchdetails
else
echo "Nothing to Worry"
fi

deletefile

我收到的错误是：

checkcount[13]: ~!@#$%^&*-_{};":/.,<>?()]');:  not found.

Nothing to Worry

答案1

该错误表明问题出在这里：

REGEXP_LIKE(tran_particular,'[^[:alnum:] \'\'\`\~\!\@\#\$\%\^\&\*\-\_\{\}\;\"\:\/\.\,\<\>\?\(\)\]\'\)\;
                                              ^

shell 将此反引号解释为关闭 中的反引号COUNT=，并尝试将该行的其余部分作为命令 运行~!@#$%^&*-_{};":/.,<>?()]');。

尝试这个：

COUNT=$(sqlplus -s $USER/$PASS@proddb <<EOF
<snip>
EOF
)

该$()结构通常更安全（并且更易于阅读）。

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