Bash - How to split a string with multiple words

Question

I have a long string like following:

string='lala1lala2lala3'

The objective is to loop through each of the 'yourid' and echo the id 12345, 34567 and 39201 for further processing. How can this be achieve through bash shell?

bash might be a bad choice. If you can, go with a language which has XML support such as Perl, Python, or TCL. — Hai Vu
– Hai Vu, Commented Jul 2, 2013 at 2:39

glenn jackman · Accepted Answer · 2013-07-02 04:00:52Z

3

GNU grep:

grep -oP '(?<=/yourid/)\d+' <<< "$string"

12345
34567
39201

answered Jul 2, 2013 at 4:00

glenn jackman

249k42 gold badges233 silver badges362 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Charles Duffy · Accepted Answer · 2013-07-02 02:42:19Z

2

Use a real XML parser. For instance, if you have XMLStarlet installed...

while read -r id; do
  [[ $id ]] || continue
  printf '%s\n' "${id#/yourid/}"
done < <(xmlstarlet sel -m -t '//span[@id]' -v ./@id -n <<<"<root>${string}</root>")

answered Jul 2, 2013 at 2:42

Charles Duffy

299k43 gold badges441 silver badges497 bronze badges

1 Comment

Bill Karwin Over a year ago

+1 xmlstarlet may not be as likely to be installed, but it's convenient that you can use ad hoc xpath expressions on the command-line. AFAIK, xsltproc requires you to use a stylesheet file.

perreal · Accepted Answer · 2013-07-02 04:07:55Z

1

With Perl:

declare -a ids
ids=( $(perl -lne 'while(m!yourid/(\w+)!g){print $1}' <<< "$string") )
echo ${ids[@]}

edited Jul 2, 2013 at 4:07

answered Jul 2, 2013 at 2:42

perreal

98.7k23 gold badges159 silver badges187 bronze badges

Collectives™ on Stack Overflow

Bash - How to split a string with multiple words

3 Answers 3

Comments

1 Comment

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related