Extract string between <>

rakeshou · #1 (**permalink**) 11-20-2007

hi,

I want a simple way to extract string between two angle brackets <>

the text looks like

echo "###Usage: $0 <database1> <database2>"

what I want is two variables DB1=database1 and DB2=database2

What I am doing looks clumsy to me

Code:

DB1=`echo $line | sed 's/"//g' | sed 's/>//g' | awk -F"<" '{print $2}'`
DB2=`echo $line | sed 's/"//g' | sed 's/>//g' | awk -F"<" '{print $3}'`

thanks in advance

radoulov · #2 (**permalink**) 11-20-2007

With bash/ksh93:

Code:

line='###Usage: $0 <database1> <database2>' line=(${line//[<>]})
db1="${line[2]}" db2="${line[3]}"

With zsh:

Code:

line=(${=line//[<>]})
db1="${line[3]}" db2="${line[4]}"

Or:

Code:

db1="${${(m)line%*> <*}#*<}"
db2="${${(m)line#*> <}%?}"

vgersh99 · #3 (**permalink**) 11-20-2007

Code:

echo "${line}" | nawk -F '(<|>)' '{ printf("DB1=%s;DB2=%s\n", $2, $4)}'

rakeshou · #4 (**permalink**) 11-20-2007

are there other ways to do it?

Thanks

Franklin52 · #5 (**permalink**) 11-20-2007

Code:

DB1=`echo $line | sed 's/.*<\(.*\)> <.*/\1/'`

DB2=`echo $line | sed 's/.*> <\(.*\)>"/\1/'`

Regards

vgersh99 · #6 (**permalink**) 11-20-2007

Quote:

Originally Posted by rakeshou

are there other ways to do it?

Thanks

maybe.... why?

LivinFree · #7 (**permalink**) 11-20-2007

Eek! Forget sed and awk unless you really need regexp - moderns shells are powerful enough:

Code:

#! /bin/bash

line='echo "###Usage: $0 <database1> <database2>"'

line=${line#*<}
DB1=${line%%>*}

line=${line#*<}
DB2=${line%%>*}

printf "\$DB1=$DB1 \$DB2=$DB2\n"

This works in non-ancient versions of bash and pdksh (don't have AT&T ksh handy, but I'd expect it to work there as well.)

This is faster and more elegant, in my not-so-humble opinion

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