Shell Programming and Scripting

Hello guys,

I would need to remove the last character ")" of a specific line. This can be from any line. Your help is appreciated. Below is the line.

Code:

HOSTNAME=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP))

Please help.

Hello sang8g,

Welcome to forum, please use code tags for commands/codes/Inputs which you show us in your posts. For your request you can try following.
i-

Code:

 a="HOSTNAME=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP))"
 echo ${a%)}

Output will be as follows.

Code:

 HOSTNAME=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)

ii- If line is every time ending with character ) then

Code:

 awk '{sub(/\)$/,X,$0);print}' Input_file

Output will be as follows.

Code:

 HOSTNAME=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)

Hope this may help you.


Thanks,
R. Singh

Hello Ravinder Singh,
Thank you for your response. But yeah in a normal scenario. it works. But actually i am trying to do this in a script, so my script has the below lines

Code:

cp /root/new/test.prop /root/sid/
su -l suadm <<EOF

source /root/sid/test.prop

after sourcing it connecting it using sqlplus by taking the conn strings from test.prop file.
so in the test.prop, ")" extra character should be removed and then source this test.prop file and conn using sqlplus.

Hello sang8g,

Not sure if I understand requirement completely but why should a tnsnames(actual file name for oracle) or test.prp file will NOT have complete pair of ) braces at first place. If still that is correct entry then could you please be more clear in your requirement because in my first post I have suggested one awk solution which can help you if you only want to remove character ) and get the values.


Thanks,
R. Singh

actually my requirement is that i should open the test.prop file and remove the last character ")" from a particular line and then save and quit the file. this should be done by a script itself.

Hello sang8g,

Yes, following may help you in same.

Code:

awk '{sub(/\)$/,X,$0);print}' Input_file > temp_input_file
mv temp_input_file Input_file

There is one more option sed -i but above option is more convenient. Hope this helps.

NOTE: You can change files names Input_file and temp_input_file accordingly.


Thanks,
R. Singh

Thanks Ravinder. That works !!!