shell 调试 2例

1.#############

#!/bin/ksh

if [ ! -z $TNS_ADMIN ]; then
      export TNS_ADMIN=`dirname $TNS_ADMIN`
        else
            export TNS_ADMIN=$ORACLE_HOME/network/admin
              fi

                echo $TNS_ADMIN

调试过程：

if [ ! -z $TNS_ADMIN ]; then

修改为

if [ ! -z “$TNS_ADMIN” ]; then

ref doc https://www.computing.net/answers/programming/error-test-argument-expected/18951.html

Hi,

When i execute the following script i'm getting test: argument expected error at if [ -z $file ]. Can someone plz advise.

if [ -z $file ]
then
echo " DID NOT ENTER A FILE NAME "
elif [ ! -f $file ]
then
echo " File ' $file ' Doesn't Exists In $PWD Directory "
else
echo " File ' $file ' Exists In $PWD Direcotry "
fi

Thanks.

See More: Error : test: argument expected

Report •

nails May 7, 2009 at 07:02:57

Your script worked for me with no problems:

#!/bin/ksh

read file
if [ -z "$file" ]
then
   echo " DID NOT ENTER A FILE NAME "
elif [ ! -f "$file" ]
then
   echo " 	 File ' $file ' Doesn't Exists In $PWD Directory 
"
else
   echo " 	 File ' $file ' Exists In $PWD Direcotry 
"
fi

BTW, it's always a good idea to include the shell invocation on line 1 of your script. I'd surround $file with double quotes "$file"

Have you tried the extended test facility - two brackets instead of 1:


#!/bin/ksh

read file
if [[ -z $file ]]
then
   echo " DID NOT ENTER A FILE NAME "
elif [[ ! -f $file ]]
then



2.#############


#!/bin/ksh


set -x


export ORACLE_BASE=/opt/oracle11g
export HOME=/home/oracle
export ORACLE_HOME=/opt/oracle11g/product/11.1.0

env

  LSNRLOG=`/opt/oracle11g/product/11.1.0/bin/lsnrctl <<EOF
    set current_listener yesinuat
      show trc_directory
        EOF`
             
    echo "Listener Log File: $LSNRLOG"

  LSNRLOG=`/opt/oracle11g/product/11.1.0/bin/lsnrctl <<EOF | grep trc_directory | awk '{print $6"/"$1".log"}'
  set current_listener yesinuat
  show trc_directory
  EOF`
      echo "Listener Log File: $LSNRLOG"


调试过程：

crontab 在调用过程中，只有如下环境变量 
PATH=/usr/bin:/usr/sbin:.
LOGNAME=oracle
SHELL=/usr/bin/sh
HOME=/home/oracle
PWD=/home/oracle
TZ=EAT-8


所以需要在你的shell脚本开始加上

##################

. /etc/profile

export ORACLE_BASE=/opt/oracle11g
export HOME=/home/oracle
export ORACLE_HOME=/opt/oracle11g/product/11.1.0

##################

3。######################

man test