I have one question regarding sed regexp (or any regexp in general),
I have some path like this
C:/Abc/def/ghi/jkl in a file file1
Now if i use following code
Code:
cat file1 | sed 's#\(.*\)/.*#\1#'
Now it give me following output
C:/Abc/def/ghi, which is fine
But i just want to know that in this sed code, why it is treating only last forward slash in file1 as the base for creating value of subsection (.*). i mean to say why it is treating C:/Abc/def/ghi as value of subsection. We are having 5 forward slashes in file1, why not it is picking upto C:/Abc/def.
Is that the property of regexp that if a sentence has five forward slashes & i use .*/.*, it will treat forward slash as last forward slash in file.
Can any one please suggest me some article/link to this question. I hope you are getting my question.
OFF 00280456 - 2014|1|2020_STATUS|GROUP_NAME|SUBGROUP_NAME|CLASS_NAME|GROUP_ID|SUBGROUP_ID
I have above header in file. I need to replace 2020_STATUS with STATUS.
2020_STATUS is not always same but the column name will have STATUS all of the time. For instance column name might be 2019_STATUS... (1 Reply)
G'day,
Here's a teaser for a sed guru, which I surely am not one, as even my
basic sed skills are rusted from years of not practising ... lol
Ok ... we have a string of digits such as:
632413741610252847552619172459483022433027602515212950543016701812771409213148672112
we want it split... (9 Replies)
I need help with a regexp to find out the ip address which can possibly be present in a URL.
The URLs can be in any of the following form
<domain>?a=12345&d=somestring1
<domain>?c=10.10.10.100&d=somestring1
<domain>?a=12345&b=somestring1&c=10.1.2.4d=somestring2... (3 Replies)
Hi everyone, I would really appreciate any help I could get on the following topic.
I am not very familiar with reg expressions nor with sed, I just know the basic uses. What I am trying to do is the following: I have a huge text file where I would like to replace all occurnces of a certain... (13 Replies)
Dealing with Linux servers
script would be in korn or bash shell syntax
file is /etc/fstab
I want to insert something if regex is matched to all matched lines in the /etc/fstab file and print out entire /etc/fstab file with the changes
example
58.228.111.111:/my/file/system... (5 Replies)
Dear all
i have the code which print 1 line of context before and after regexp, with line number
sed -n -e '/regexp/{=;x;1!p;g;$!N;p;D;}' -e h
the code work well but any one can tell me what each letter mean {=;x;1!p;g;$!N;p;D;}
also how i can print 2 line before and onle line after ... (2 Replies)
Hi,
I am not that good with reg exp and sed. But I was just looking at something the other day and came across a situation.
When I ran the below command:
echo "123 word" | sed 's/*/(&)/'
the op was:
(123) word
But when I ran:
echo "123 word" | sed 's/*/(&)/g'
the o/p was:
(123)... (4 Replies)
Basically it should identify what ever is in between /*< >*/ (tags) and replace dbname ending with (.) with the words in between the tags
i.e.
DELETE FROM /*<workDB>*/epd_test./*<multi>*//*<version>*/epd_tbl1 ALL; into
DELETE FROM... (4 Replies)
the sed command:
sed 's/^*//' file
does not work on HP-UX :-( but it works fine on Linux,
content of file:
<tab><tab>hello
output should be:
hello
Any ideas??
Thank you
Andy (8 Replies)
please help:
I want to add 1 space between string and numbers:
input file:
abcd12345
output file:
abcd 1234
The following sed command does not work:
sed 's/\(+\)\(+\)/\1 \2/' file
Any ideas, please
Andy (2 Replies)
