nixCraft

jaysunn · #1 (**permalink**) 26th June 2009, 08:31 PM

Hello Forum people. I have been searching the Internet for the answer to my question, and I think it may be related to the command "sort" or "uniq"

In Example. I have a file with lines of text that are not in alphabetical order.

Code:

shine:~ jaysunn$ cat file1 
asdkfokaosfknksdigjisjigjdigjmnh

ojdfojjjojddfpdfo sdfokpoopsdf jsdfojsdf

wiewieiemd iuh asdlk  this is a file blah blah

shine:~ jaysunn$

What I would like to have happen is. I want to issue a command that will take the text within file1 and put it in alphabetical order from a-z. I am pretty sure that sort or uniq can achieve this. I have tried this and was unsuccessful. The command would alphabetize the text and output file2.

Code:

shine:~ jaysunn$ sort file1 | uniq -c > file2
   4 
   1 asdkfokaosfknksdigjisjigjdigjmnh
   1 ojdfojjjojddfpdfo sdfokpoopsdf jsdfojsdf
   1 wiewieiemd iuh asdlk  this is a file blah blah
shine:~ jaysunn$

Thanks in advance.

Jaysunn

nixcraft · #2 (**permalink**) 26th June 2009, 08:57 PM

You would like to sort it based upon first character of each line?

jaysunn · #3 (**permalink**) 27th June 2009, 02:48 AM

Hey Nixcraft,
Thanks for the quick reply.

Yes my goal would be to alphabetize each string in the file in alphabetical order.

e.g.

Code:

ehqukldkg
hiuthhhtilc

To become

Code:

dehkklqu
chhhhhiiltu

Etc.......

Thanks as always for your forum and professionalism.

Jaysunn

nixcraft · #4 (**permalink**) 27th June 2009, 03:33 AM

Try the following:

PHP Code:


			
#!/bin/bash
INPUT=$1

usage(){
    echo "Usage: $0 input.txt"
    exit 1
}

die(){
    echo "$@"
    exit 2
}
[ $# -ne 2 ] && usage

[ ! -f "$INPUT" ] && die "File $INPUT does not exist!"

while read line 
do
    echo "$line" | grep -o . | sort -n |tr -d '\n'; echo ""
done < "$INPUT"

Quote:

Thanks as always for your forum and professionalism.

You're welcome!

jaysunn · #5 (**permalink**) 27th June 2009, 06:35 PM

Thanks Nixcraft....
It works like a charm.

Jaysunn

cfajohnson · #6 (**permalink**) 2nd July 2009, 09:09 AM

Quote:

Originally Posted by nixcraft

Try the following:

Code:

#!/bin/bash
INPUT=$1

usage(){
    echo "Usage: $0 input.txt"
    exit 1
}

die(){
    echo "$@"
    exit 2
}
[ $# -ne 2 ] && usage

[ ! -f $INPUT ] && die "File $INPUT does not exist!"

That will fail if $INPUT contains spaces or is empty.
Code:
[ ! -f "$INPUT" ] && die "File $INPUT does not exist!"

Quote:

Code:

while read line 
do
    echo "$line" | grep -o . | sort -n |tr -d '\n'; echo ""

That can fail because most versions of grep so not have an -o option. Use
sed instead.
Code:
echo "$line" | sed 's/./&\
/g' | sort | tr -d '\n'; echo ""
(sort doesn't need the -n option.)

Quote:

Code:

done < $INPUT

That will fail if $INPUT contains spaces.
Code:
done < "$INPUT"

nixcraft · #7 (**permalink**) 2nd July 2009, 11:45 AM

Quote:

That will fail if $INPUT contains spaces or is empty.
[ ! -f "$INPUT" ] && die "File $INPUT does not exist!"

How?

Code:

INPUT="this is a test.txt"
[ ! -f "$INPUT" ] && echo "No" || echo "Yes"

No

Code:

>"$INPUT"
[ ! -f "$INPUT" ] && echo "No" || echo "Yes"

Yes
And with empty

Code:

INPUT=""
 [ ! -f "$INPUT" ] && echo "No" || echo "Yes"

No

Tested on GNU bash, version 3.2.39.

cfajohnson · #8 (**permalink**) 2nd July 2009, 12:35 PM

Quote:

Originally Posted by nixcraft

How?

Code:

INPUT="this is a test.txt"
[ ! -f "$INPUT" ] && echo "No" || echo "Yes"

No

Code:

>"$INPUT"
[ ! -f "$INPUT" ] && echo "No" || echo "Yes"

Yes
And with empty

Code:

INPUT=""
 [ ! -f "$INPUT" ] && echo "No" || echo "Yes"

No

Tested on GNU bash, version 3.2.39.

Now try it the way you wrote the script, without quotes around $INPUT.

It will give you error messages.

nixcraft · #9 (**permalink**) 2nd July 2009, 01:45 PM

Quote:

Originally Posted by cfajohnson

Now try it the way you wrote the script, without quotes around $INPUT.

It will give you error messages.

Oh yes.. my bad, I should have tested it

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Alphabetize text within a file

[Solved] Alphabetize text within a file

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