请教一个简单的shell 脚本问题，打印出来的和计算出来的不一致

草中宝

如题，一个简单的shell 脚本问题，打印出来的和计算出来的不一致

脚本如下
[root@DBServer1 tmp]# cat install_db_test2.sh
chown oracleinstall /etc/oraInst.loc
su - oracle << EOF
/tmp/database/runInstaller -silent -force -noconsole -noconfig \
oracle.install.responseFileVersion=/oracle/install/rspfmt_dbinstall_response_schema_v11_2_0 \
oracle.install.option=INSTALL_DB_SWONLY \
DECLINE_SECURITY_UPDATES=true \
UNIX_GROUP_NAME=oinstall \
INVENTORY_LOCATION=$INVENTORY_LOCATION \
SELECTED_LANGUAGES=en,zh_CN,zh_TW \
ORACLE_HOME=$ORACLE_HOME \
ORACLE_BASE=$ORACLE_BASE \
oracle.install.db.InstallEdition=EE \
oracle.install.db.isCustomInstall=false \
oracle.install.db.DBA_GROUP=dba \
oracle.install.db.OPER_GROUP=oper
sleep 30s
while [ 1 ]
do
    echo `date +'%F %T'` >> /tmp/ps.txt
    ps aux | grep oracle | grep -v bash | grep -v grep | grep -v 'su - oracle' | grep -v 'ps aux' | grep -v sleep >> /tmp/ps.txt
    declare -i procCount=$(ps aux | grep oracle | grep -v bash | grep -v grep | grep -v 'su - oracle' | grep -v 'ps aux' | grep -v sleep | wc -l)
    echo "procCount=\$procCount"
    if [[ \$procCount -eq 0 ]]; then
        echo "install database software finished,exiting..."
        break;
    else
        echo "installing database software,sleep 3s..."
        sleep 3s
    fi
done
exit
EOF
$ORACLE_HOME/root.sh
[root@DBServer1 tmp]#

执行结果
[root@DBServer1 tmp]# ./install_db_test2.sh
正在启动 Oracle Universal Installer...
检查临时空间: 必须大于 120 MB。   实际为 1571 MB    通过
检查交换空间: 必须大于 150 MB。   实际为 1539 MB    通过
准备从以下地址启动 Oracle Universal Installer /tmp/OraInstall2016-10-07_09-02-07PM. 请稍候...procCount=0
install database software finished,exiting...
[root@DBServer1 tmp]#

脚本中有问题部分，在红色字体那里。/tmp/ps.txt的内容如下
2016-10-07 19:21:36
oracle   23983 54.2 17.4 998488 183968 pts/0   Sl+  19:21   0:16 /tmp/OraInstall2016-10-07_07-21-36PM/jdk/jre/bin/java -Doracle.installer.library_loc=/tmp/OraInstall2016-10-07_07-21-36PM/oui/lib/linux64 -Doracle.installer.oui_loc=/tmp/OraInstall2016-10-07_07-21-36PM/oui -Doracle.installer.bootstrap=TRUE -Doracle.installer.startup_location=/tmp/database/install -Doracle.installer.jre_loc=/tmp/OraInstall2016-10-07_07-21-36PM/jdk/jre -Doracle.installer.custom_inventory=/opt/app/oraInventory -Doracle.installer.nlsEnabled="TRUE" -Doracle.installer.prereqConfigLoc=  -Doracle.installer.unixVersion=3.8.13-16.2.1.el6uek.x86_64 -mx150m -cp /tmp/OraInstall2016-10-07_07-21-36PM::/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/orai18n-utility.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/emagentSDK.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/cvu.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/orai18n-mapping.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/instcommon.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/remoteinterfaces.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/ssh.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/prov_fixup.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/installcommons_1.0.0b.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/jsch.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/OraPrereqChecks.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/emConfigInstall.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/ojdbc5.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/OraPrereq.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/log4j-core.jar:/tmp/OraInstall2016-10-07_07-21-36PM/ext/jlib/instdb.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/OraInstaller.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/oneclick.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/xmlparserv2.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/share.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/OraInstallerNet.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/emCfg.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/emocmutl.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/OraPrereq.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/jsch.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/ssh.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/remoteinterfaces.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/http_client.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/OraSuiteInstaller.jar:../stage/Components/oracle.swd.opatch/11.2.0.4.0/1/DataFiles/jlib/opatch.jar:../stage/Components/oracle.swd.opatch/11.2.0.4.0/1/DataFiles/jlib/opatchactions.jar:../stage/Components/oracle.swd.opatch/11.2.0.4.0/1/DataFiles/jlib/opatchprereq.jar:../stage/Components/oracle.swd.opatch/11.2.0.4.0/1/DataFiles/jlib/opatchutil.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/OraCheckPoint.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/InstImages.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/InstHelp.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/InstHelp_de.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/InstHelp_es.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/InstHelp_fr.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/InstHelp_it.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/InstHelp_ja.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/InstHelp_ko.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/InstHelp_pt_BR.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/InstHelp_zh_CN.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/InstHelp_zh_TW.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/oracle_ice.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/help4.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/help4-nls.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/ewt3.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/ewt3-swingaccess.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/ewt3-nls.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/swingaccess.jar::/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/jewt4.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/jewt4-nls.jar:/tmp/OraInstall2016-10-07_07-21-36PM/oui/jlib/orai18n-collation.jar:/tmp/OraInstall2016-10-07_07-21-3
2016-10-07 21:02:06
oracle   10912 56.2 16.5 998400 174036 pts/0   Sl+  21:02   0:16 /tmp/OraInstall2016-10-07_09-02-07PM/jdk/jre/bin/java -Doracle.installer.library_loc=/tmp/OraInstall2016-10-07_09-02-07PM/oui/lib/linux64 -Doracle.installer.oui_loc=/tmp/OraInstall2016-10-07_09-02-07PM/oui -Doracle.installer.bootstrap=TRUE -Doracle.installer.startup_location=/tmp/database/install -Doracle.installer.jre_loc=/tmp/OraInstall2016-10-07_09-02-07PM/jdk/jre -Doracle.installer.custom_inventory=/opt/app/oraInventory -Doracle.installer.nlsEnabled="TRUE" -Doracle.installer.prereqConfigLoc=  -Doracle.installer.unixVersion=3.8.13-16.2.1.el6uek.x86_64 -mx150m -cp /tmp/OraInstall2016-10-07_09-02-07PM::/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/orai18n-utility.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/emagentSDK.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/cvu.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/orai18n-mapping.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/instcommon.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/remoteinterfaces.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/ssh.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/prov_fixup.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/installcommons_1.0.0b.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/jsch.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/OraPrereqChecks.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/emConfigInstall.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/ojdbc5.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/OraPrereq.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/log4j-core.jar:/tmp/OraInstall2016-10-07_09-02-07PM/ext/jlib/instdb.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/OraInstaller.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/oneclick.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/xmlparserv2.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/share.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/OraInstallerNet.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/emCfg.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/emocmutl.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/OraPrereq.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/jsch.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/ssh.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/remoteinterfaces.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/http_client.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/OraSuiteInstaller.jar:../stage/Components/oracle.swd.opatch/11.2.0.4.0/1/DataFiles/jlib/opatch.jar:../stage/Components/oracle.swd.opatch/11.2.0.4.0/1/DataFiles/jlib/opatchactions.jar:../stage/Components/oracle.swd.opatch/11.2.0.4.0/1/DataFiles/jlib/opatchprereq.jar:../stage/Components/oracle.swd.opatch/11.2.0.4.0/1/DataFiles/jlib/opatchutil.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/OraCheckPoint.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/InstImages.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/InstHelp.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/InstHelp_de.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/InstHelp_es.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/InstHelp_fr.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/InstHelp_it.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/InstHelp_ja.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/InstHelp_ko.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/InstHelp_pt_BR.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/InstHelp_zh_CN.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/InstHelp_zh_TW.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/oracle_ice.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/help4.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/help4-nls.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/ewt3.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/ewt3-swingaccess.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/ewt3-nls.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/swingaccess.jar::/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/jewt4.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/jewt4-nls.jar:/tmp/OraInstall2016-10-07_09-02-07PM/oui/jlib/orai18n-collation.jar:/tmp/OraInstall2016-10-07_09-02-0

说明执行
ps aux | grep oracle | grep -v bash | grep -v grep | grep -v 'su - oracle' | grep -v 'ps aux' | grep -v sleep
是没有问题的，是有内容的，按道理

declare -i procCount=$(ps aux | grep oracle | grep -v bash | grep -v grep | grep -v 'su - oracle' | grep -v 'ps aux' | grep -v sleep | wc -l)
是有数据的，但

echo "procCount=\$procCount"
的计算结果，$procCount却等于0

问题出在哪里呢，还请大家指教。

初学，谢谢。

农民伯伯丶

手动执行 ps aux | grep oracle | grep -v bash | grep -v grep | grep -v 'su - oracle' | grep -v 'ps aux' | grep -v sleep | wc -l 这句话看看
另外echo "procCount=\$procCount" 和 if [[ \$procCount -eq 0 ]] 为啥要使用跳脱符号呀，表示不解
如果还不行，使用sh -x执行脚本看看