Maxo
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clubs:
| Make variables uppercase in bash. 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? | |
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deblin
Dark Side of the Moon
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Middletown, DE
| Re: 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?
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He who is not contented with what he has, would not be contented with what he would like to have. -Socrates | |
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Maxo
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clubs: | Re: Make variables uppercase in bash. 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. | |
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deblin
Dark Side of the Moon
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Middletown, DE | Re: Make variables uppercase in bash. oh ok! cool, should do the trick.  | |
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Maxo
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| Re: Make variables uppercase in bash.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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deblin
Dark Side of the Moon
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Middletown, DE | Re: Make variables uppercase in bash. Looks like a good place for a perl script.  | |
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deblin
Dark Side of the Moon
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Middletown, DE
| Re: Make variables uppercase in bash. heh! ok, well let me take a look.
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deblin
Dark Side of the Moon
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| 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 ?
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He who is not contented with what he has, would not be contented with what he would like to have. -Socrates | |
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deblin
Dark Side of the Moon
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Middletown, DE
| 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.
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He who is not contented with what he has, would not be contented with what he would like to have. -Socrates | |
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Maxo
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clubs: | Re: Make variables uppercase in bash. the_char=`echo ${LINE:4:1} | tr a-z A-Z`
The above line just returns the given string literal, not the results of the echo. | |
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deblin
Dark Side of the Moon
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join:2001-09-01
Middletown, DE
| Re: Make variables uppercase in bash.said by Sir Meowmix III :
What about using sed?
s/i/I/g s/o/O/g
Good call, that'd work, if he anchor'd it to the ".", e.g.:
bash code:... | sed 's/o\./O./g' | sed 's/i\./I\./g'
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Maxo
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clubs:
| I've never used sed before and have only recently began reading up on regular expressions.
I read through the man pages and looked at the code you gave. It appears to work with the following code:
The only thing that is missing is how to take the result of this output and store it in a variable.
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Maxo
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clubs:
| Re: Make variables uppercase in bash. said by Sir Meowmix III :
[code]
MYVAR=$(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. | |
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nixen
Rockin' the Boxen
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Alexandria, VA
 ·Cox HSI
 ·Speakeasy
1 edit | 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:
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Sir Meowmix III
@windstream.net | Agree, good call, at that point the regex would be positional on the file extension. | |
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Sir Meowmix III
| Glad to help Maxo. Feel free to ask for help anytime you get stuck. | |
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