operand expected (error token is "<")

Shell Programming and Scripting
1

Hi, i am getting error from below script.

Error:  s1.sh: line 19: ((: j<: syntax error: operand expected (error token is "<")

#!/bin/bash

str=$(ps -eaf | grep smon | grep -v grep | awk ' {print $8}' | cut -c10-18)

i=1

while [ 1 ]
do
        temp=`echo $str|awk '{print $"'$i'"}'`
        if [ "$temp" = "" ]
        then
                break
        fi
        eval "var_$i"=$temp
        i=`expr $i + 1`

done

for ((j=1;j<$i;j++))
do
     export ORACLE_SID='$'var_$j
     source $HOME/.bash_profile
     $ORACLE_HOME/bin/sqlplus / as sysdba << EOF
     spool '/u02/lak/s1.txt' append
     select username from all_users;
     spool off;
EOF

done



str=" TEST LAK"

Thanks
Lak.

2

what is value of $i ? it can be null ?

3

no, check it in While loop, first it is assigned to 1 and incremented in while loop according to input of str.

4

can you write to output

str=$(ps -eaf | grep smon | grep -v grep | awk ' {print $8}' | cut -c10-18)
5

i 've already written,

str="TEST LAK";

6

you use to source .bash_profile (it goes ~/bashrc and also it goes /etc/bashrc )

your answer is below :wink:

$ grep -H 'unset i' /etc/bashrc
/etc/bashrc:    unset i

therefore your $i --> NULL and for loop fails

regards
ygemici

7

okey fine. what can i add to my code to successful execution of my script.

---------- Post updated at 03:23 PM ---------- Previous update was at 10:03 AM ----------

any one their to help me out of this problem.

8

Hi,
Just rename $i to $iamnoti for example.

9

It solved. But when I am storing var_$iamnoti its just storing as var_1,var2. not real values

for ((j=1;j<$i;j++)) do export ORACLE_SID='$'var_$j source $HOME/.bash_profile $ORACLE_HOME/bin/sqlplus / as sysdba << EOF spool '/u02/lak/s1.txt' append select username from all_users; spool off; EOF done

10

Please use [CODE] tags.

11

sorry,

#!/bin/bash

str=$(ps -eaf | grep smon | grep -v grep | awk ' {print $8}' | cut -c10-18)

inc=1

while [ 1 ]
do
        temp=`echo $str|awk '{print $"'$inc'"}'`
        if [ "$temp" = "" ]
        then
                break
        fi
        eval "var_$inc"=$temp
        inc=`expr $inc + 1`

done

for ((j=1;j<$inc;j++))
do
     ORACLE_SID='$'var_$j
     export ORACLE_SID
     echo $ORACLE_SID
     source $HOME/.bash_profile
     $ORACLE_HOME/bin/sqlplus / as sysdba << EOF
     spool '/u02/lak/s1.txt' append
     select username from all_users;
     spool off;
EOF

done
12

The closing is [/CODE] . . .

Try adding this

eval ORACLE_ID='$'var_$j
13

lots of thanks Chirel :cool:. atlast, my script working fine without Errors. :wink: