OS and Software > All Things Unix > Make variables uppercase in bash.

Make variables uppercase in bash.

I suppose you can't use tr?

echo ${var:2:1} | tr 'a-z' 'A-Z'

would work, but I take it you want to avoid using tr?
--
He who is not contented with what he has, would not be contented with what he would like to have. -Socrates

All the examples of tr that I saw had to take files. I didn't think about using pipes. I think that should work. I'll try it and let you know.

oh ok! cool, should do the trick.

I think I may need to be a little more specific. We are writing a bash script that reads some stuff and builds a control file for Oracle's sqlldr, and then we execute sqlldr with the build control file. Our code looks much like this:

   if [ "${LINE}" = "amico.990120" ];  then       
      echo Building amic control file for ${LINE}
      echo LOAD DATA               > file_loader.ctl
      echo INFILE \'${LINE}\'      >> file_loader.ctl
      echo APPEND                  >> file_loader.ctl
      echo INTO TABLE schema.table >> file_loader.ctl
      echo "("                     >> file_loader.ctl
      echo " column1(1:2),"        >> file_loader.ctl
      echo " column2(3:4),"        >> file_loader.ctl
      echo " column3 CONSTANT '" ${LINE:4:1} | tr 'a-z' 'A-Z' "'," >> file_loader.ctl
      echo ")"                     >> file_loader.ctl
      sqlldr user/pass@database file_loader.ctl log=sqlldr.log silent=FEEDBACK
    else
      echo No Amic file found
    fi
  done < myAmicFiles
 

Looks like a good place for a perl script.

reply to Maxo
So in this line:

quote:

---

echo " column3 CONSTANT '" ${LINE:4:1} | tr 'a-z' 'A-Z' "'," >> file_loader.ctl

---

reply to Maxo
Probably the easiest thing to do would be to set a variable for the letter first, then just use that variable.

e.g instead of:

bash code:

echo " column3 CONSTANT '" ${LINE:4:1} | tr 'a-z' 'A-Z' "'," >> file_loader.ctl

the_char=`echo ${LINE:4:1} | tr a-z A-Z`
echo " column3 CONSTANT '$the_char'," >> file_loader.tcl

reply to Maxo
What about using sed?

s/i/I/g s/o/O/g

reply to Maxo
Agree, good call, at that point the regex would be positional on the file extension.

reply to pflog
the_char=`echo ${LINE:4:1} | tr a-z A-Z`
The above line just returns the given string literal, not the results of the echo.

reply to Sir Meowmix III
I've never used sed before and have only recently began reading up on regular expressions.
I read through the man pages and looked at the code you gave. It appears to work with the following code:

echo $LINE | sed 's/o\./O\./g' | sed 's/i\./I\./g'
 

MYVAR=$(echo $LINE | sed 's/o\./O\./g' | sed 's/i\./I\./g')
 
echo $MYVAR
 

reply to Maxo
Glad to help Maxo. Feel free to ask for help anytime you get stuck.

reply to Maxo

echo $LINE | sed 's/o\./O\./g' | sed 's/i\./I\./g'
 

VAR=`$LINE | sed -e 's/o\./O\./g' -e 's/i\./I\./g'`
 

VAR=`$LINE | sed '{
                     s/o\./O\./g
                     s/i\./I\./g
                  }'`