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Old 11-21-2011, 02:35 PM   #1
akshaykb1
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Registered: Nov 2011
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-bash: syntax error near unexpected token `('


Hello,

I am trying to create an alias that I can use in .bash_profile. Before creating an alias, I tested the following positively.

tail -f $ORACLE_BASE/diag/rdbms/`echo $ORACLE_SID |awk '{print tolower\($1\)}'`/$ORACLE_SID/trace/alert_$ORACLE_SID.log

But when I try to create an alias called alertt using below:

alias alertt='tail -f /u01/app/oracle/diag/rdbms/`echo $ORACLE_SID |awk '{print tolower($1)}'`/$ORACLE_SID/trace/alert_$ORACLE_SID.log'

it throws the following error:
-bash: syntax error near unexpected token `('

Any help is appreciated.

--AK
 
Old 11-21-2011, 02:46 PM   #2
colucix
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Distribution: CentOS 6.5 OpenSuSE 12.3
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The problem is that the quotes around the awk code actually close the starting quote and open a new pair of quotes respectively. See the parts highlighted in blue:
Code:
alias alertt='tail -f /u01/app/oracle/diag/rdbms/`echo $ORACLE_SID |awk '{print tolower($1)}'`/$ORACLE_SID/trace/alert_$ORACLE_SID.log'
To solve this you could embed the whole alias definition in double quotes instead of single ones. Even better you could define a function instead and use export -f to make it available to any other (sub)shell.
 
1 members found this post helpful.
Old 11-21-2011, 02:59 PM   #3
akshaykb1
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Registered: Nov 2011
Location: Chicago Land
Posts: 2

Original Poster
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Thank you, double quotes did the trick.

Quote:
Originally Posted by colucix View Post
The problem is that the quotes around the awk code actually close the starting quote and open a new pair of quotes respectively. See the parts highlighted in blue:
Code:
alias alertt='tail -f /u01/app/oracle/diag/rdbms/`echo $ORACLE_SID |awk '{print tolower($1)}'`/$ORACLE_SID/trace/alert_$ORACLE_SID.log'
To solve this you could embed the whole alias definition in double quotes instead of single ones. Even better you could define a function instead and use export -f to make it available to any other (sub)shell.
Thank you!!! it worked. I am new to UNIX world. Can you elaborate more on "define a function instead". An example would be good.

--AK
 
Old 11-21-2011, 06:45 PM   #4
grail
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As you are in bash, you could try:
Code:
alias alertt='tail -f /u01/app/oracle/diag/rdbms/${ORACLE_SID,,}/$ORACLE_SID/trace/alert_$ORACLE_SID.log'
 
  


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