To find a word and copy the following word with shell(ubuntu)?

Question

is there a posibility to find a word in a file and than to copy the following word?

Example:

abc="def"
bla="no_need"
line_i_need="information_i_need"
still_no_use="blablabla"

so the third line, is exactly the line i need!

is it possible to find this word with shell orders?

thanks for your support

possible duplicate of [linux: Extract one word after a specific word on the same line](http://stackoverflow.com/questions/17371197/linux-extract-one-word-after-a-specific-word-on-the-same-line) — tripleee, May 25 '15 at 07:23
If that's your file format, you might consider whether you trust the data to be eval-safe. `source "$filename"; echo "$line_i_need"` is a security risk if the data can be influenced by untrusted sources, and a bug risk if the data isn't in genuine POSIX sh assignment format, but certainly easy. — Charles Duffy, May 25 '15 at 15:06

score 1 · Answer 1 · answered May 25 '15 at 04:23

1

Using an awk with custom field separator it is much simpler:

awk -F '[="]+' '$1=="line_i_need"{print $2}' file
information_i_need

-F '[="]+' sets field separator as 1 or more of = or "

answered May 25 '15 at 04:23

anubhava

score 0 · Answer 2 · answered May 24 '15 at 16:49

0

Use grep:

grep file_name line_i_need

It will print:

line_i_need="information_i_need"

answered May 24 '15 at 16:49

diogo

i only need : information_i_need, i don´t need the rest...how can i cut it out? – Lama Dingo May 24 '15 at 16:52

Michal Bureš · Answer 3 · 2015-05-24T17:10:47.107

0

This finds the line with grep an cuts the second column using " separator

 grep file_name line_i_need | cut -d '"' -f2

edited May 24 '15 at 17:10

answered May 24 '15 at 17:05

Michal Bureš

grep "file_name line_i_need" | cut -d '"' -f2 is correct? – Lama Dingo May 24 '15 at 20:05
it should be if your file looks like in the snippet you provided. Try it and if you have any problem write a comment, if it works, mark it as solved. – Michal Bureš May 24 '15 at 21:19
i mean you forget to mark the word you need with " " – Lama Dingo May 25 '15 at 08:08

3 Answers3