Make variables uppercase in bash. in All Things Unix

Re: Make variables uppercase in bash.

Fri, 21 Nov 2008 12:53:46 EDT

nixen :

said by Maxo :

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:

The only thing that is missing is how to take the result of this output and store it in a variable.

Or even:
--
The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt. -- Bertrand Russell

Re: Make variables uppercase in bash.

Fri, 21 Nov 2008 12:05:23 EDT

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

Re: Make variables uppercase in bash.

Fri, 21 Nov 2008 09:17:42 EDT

Maxo :

said by Sir Meowmix III :

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

echo $MYVAR
[/code]

That did it. Thanks a lot. You can probably tell that we just started learning how to write these scripts a few weeks ago.

Re: Make variables uppercase in bash.

Fri, 21 Nov 2008 08:46:23 EDT

anon :

Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 23:56:56 EDT

Maxo : 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:

The only thing that is missing is how to take the result of this output and store it in a variable.

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Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 23:44:37 EDT

Maxo : 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.

Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 19:59:50 EDT

anon : Agree, good call, at that point the regex would be positional on the file extension.

Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 19:43:04 EDT

deblin :

said by Sir Meowmix III :

What about using sed?

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

Good call, that'd work, if he anchor'd it to the ".", e.g.:

bash code:

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

--
He who is not contented with what he has, would not be contented with what he would like to have. -Socrates

Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 19:38:51 EDT

anon : What about using sed?

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

Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 17:12:52 EDT

deblin : 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

try:

bash code:

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

Again, assuming you just want the O there and not the full name. If you want the full name, it'd be slightly more involved but not terribly so.

--
He who is not contented with what he has, would not be contented with what he would like to have. -Socrates

Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 17:00:40 EDT

deblin : So in this line:

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

You want just the capital letter?

E.g. for LINE = amico.990120 you want just the O?

Or do you want amicO.990120 ?
--
He who is not contented with what he has, would not be contented with what he would like to have. -Socrates

Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 16:57:12 EDT

deblin :

said by Maxo :

said by deblin :

Looks like a good place for a perl script. ;)

If you knew what Perl and I had been through the last two and a half weeks you wouldn't joke like that. :)

heh! ok, well let me take a look.
--
He who is not contented with what he has, would not be contented with what he would like to have. -Socrates

Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 16:47:46 EDT

Maxo :

said by deblin :

Looks like a good place for a perl script. ;)

If you knew what Perl and I had been through the last two and a half weeks you wouldn't joke like that. :)

Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 16:45:08 EDT

deblin : Looks like a good place for a perl script. ;)

Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 16:42:54 EDT

Maxo : 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:

The myAmicFiles just looks like this:
amici.990120
amici.990220
amico.990520
amico.990620

I need the i or o to be uppercase.

--
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Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 16:31:57 EDT

deblin : oh ok! cool, should do the trick. :)

Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 16:30:08 EDT

Maxo : 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.

Re: Make variables uppercase in bash.

Thu, 20 Nov 2008 16:26:26 EDT

deblin : 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

Make variables uppercase in bash.

Thu, 20 Nov 2008 16:23:48 EDT

Maxo : I am trying to take part of a string and make it uppercase. For example:
export var='abcdefg' echo ${var:2:1}
With the exception that I need this to return 'C', not 'c'. The only thing I have been able to find are commands that take a whole file as a parameter and makes it all uppercase. Can anyone help me do this please?