Split data into multiple lines - UNIX for Dummies Questions & Answers

kingofprussia · #1 07-30-2007

All,

I have a requirement where I will need to split a line into multiple lines.

Ex:

Input:

2ABCDEFGH2POIYUY2ASDGGF2QWERTY

Output:

2ABCDEFGH
2POIYUY
2ASDGGF
2QWERTY

The data is of no fixed lenght. Only the lines have to start with 2.

How can this be done.

Thanks
KP.

awk · #2 07-30-2007

nawk -v RS="2" 'length()==0{next}{print "2" $0}' <<EOF
2ABCDEFGH2POIYUY2ASDGGF2QWERTY
EOF
2ABCDEFGH
2POIYUY
2ASDGGF
2QWERTY

vgersh99 · #3 07-30-2007

Quote:

Originally Posted by awk

nawk -v RS="2" 'length()==0{next}{print "2" $0}' <<EOF
2ABCDEFGH2POIYUY2ASDGGF2QWERTY
EOF
2ABCDEFGH
2POIYUY
2ASDGGF
2QWERTY

not exactly....

Code:

nawk -v RS="2" 'length()==0{next}{print "2" $0}' <<EOF
> aa2ABCDEFGH2POIYUY2ASDGGF2QWERTY
> EOF
2aa
2ABCDEFGH
2POIYUY
2ASDGGF
2QWERTY

a bit better:

Code:

echo 'aa2ABCDEFGH2POIYUY2ASDGGF2QWERTY' | nawk 'gsub("2", "\n2")' | sed '/^$/d'
aa
2ABCDEFGH
2POIYUY
2ASDGGF
2QWERTY

matrixmadhan · #4 07-30-2007

Code:

echo "2ABCDEFGH2POIYUY2ASDGGF2QWERTY" | sed -e 's/2/\
2/g'

Shell_Life · #5 07-31-2007

Matrix,
Your 'sed' solution displays the first line as empty:

Code:

2ABCDEFGH
2POIYUY
2ASDGGF
2QWERTY

Vgersh removed this line with:

Code:

sed '/^$/d'

Your solution could be modified not to generate the empty line:

Code:

echo "2ABCDEFGH2POIYUY2ASDGGF2QWERTY" | sed -e 's/\(.\)2/\1\
2/g'

Output:

Code:

2ABCDEFGH
2POIYUY
2ASDGGF
2QWERTY

matrixmadhan · #6 07-31-2007

Quote:

Matrix,
Your 'sed' solution displays the first line as empty:

Thats a catch !

Sorry I didn't notice that.

Thanks for correcting it !

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