That is not a even close to a clear specification.
We don't know what constitutes a variable name in the language you're trying to match.
We don't know if quotes can be escaped.
We don't know if quoted strings can extend beyond line boundaries.
Here is a clear specification of something that will match the examples you have provided:
Quote:
Match and print a string of the form:
Code:
variable=string
where variable is a string of one or more alphabetic characters and string is a string of one or more alphabetic characters, zero or more non-single-quote characters on a single line surrounded by single-quote characters, or zero or more non-double-quote characters on a single line surrounded by double-quote characters.
With the above specification, the following seems to work with your sample input:
Adding to the comments of Don: If you do want to use regexp patterns like \w, you could use the -P option of grep, which interprets the pattern as PCRE-regexp instead of extended regexp. Make sure that you read the grep man page before you use it, to understand its limitations.
Hi rakeshkumar...
OSX 10.13.0, default bash terminal.
If I am reading this thread correctly...
...to add to the other guys statements can you guarantee things like these will never occur:
Why is is strange? I don't see anything unusual here. With
Code:
var==
or the equivalent
Code:
var='='
you are assigning a string consisting of a single equal sign. With, say,
Code:
var=======
or, if you are in a funny mood
Code:
var=='='="="==
you are assigning a string of six equal signs. Nothing special here in bash or sh. Just in the case you want to do it in zsh, note that an unquoted equal sign has a special meaning, so in zsh you would have to write
As the OP hasn't given any reference to whether any variables are going to have other '=' in its string leading or otherwise then this could much more difficult than Don's solution.
I am not proficient enough on grep to solve it, but I see difficulties when they arrive.
For example: this for variable 'c' c=x=cat gives the result c=x . Although bash can accept it, doesn't mean a utility can without some serious thought. Who is to say that the OP's post doesn't have any number of '=' inside any one variable string.
As I don't know enough about the absolute subtleties of grep I will have to leave it to pros like Don et al to give their excellent advice...
As the OP hasn't given any reference to whether any variables are going to have other '=' in its string leading or otherwise then this could much more difficult than Don's solution.
I am not proficient enough on grep to solve it, but I see difficulties when they arrive.
For example: this for variable 'c' c=x=cat gives the result c=x . Although bash can accept it, doesn't mean a utility can without some serious thought. Who is to say that the OP's post doesn't have any number of '=' inside any one variable string.
Well, first of all,
Code:
c=x=cat
klachlsuppe:~: echo $c
will display x=cat, because this is what c is set to. Of course, given the way you are grepping the file (using the -o option), this will show only c=x. This is the consequence of the grep pattern you are using.
Delete patterns matching
OS version: RHEL 7.3
Shell : Bash
I have a file like below (pattern.txt). I need to delete all lines starting with the following words (words separated by comma below) and ) character.
LOGGING, NOCOMPRESS, TABLESPACE , PCTFREE, INITRANS, MAXTRANS, STORAGE,... (3 Replies)
Hi,
I have requirement to find the matching patterns of two files in Unix. One file is the log file and the other is the error list file. If any pattern in the log file matches the list of errors in the error list file, then I would need to find the counts of the match.
For example,
... (5 Replies)
Hi Experts
I need to match 2 patterns consecutively and display 25 lines after that.
1st one - Error
2nd one - End string ( comes along with the pattern one)
3rd one - error
Logic
grep "ERROR OCCURRED :" trace.log | awk -v "ES=:" -v "SS=java.lang.NullPointerException" '{
if($NF ~... (8 Replies)
Hi,
I need to find records with a search string from a file. Search strings are provided in a file.
For eg. search_String.txt file is like below
chicago
mexico
newark
sanhose
and the file from where the records need to be fetched is given below
src_file:... (1 Reply)
Hi Guys,
I have file like below, I want to print all lines between test1231233 to its 10 occurrence(till line 41)
test1231233
qwe
qwe
qweq123
test1231233
qwe
qwe
qweq23
test1231233
qwe
qwe
qweq123
test1231233
qwe
qwe
qweq123131 (3 Replies)
I have a file name in $f. If $f has "-" at the beginning, or "=", or does not have extension ".ry" or ".xt" or ".dat" then cerr would not be empty.
Tried the following but having some problems.
set cerr = `echo $f | awk '/^-|=|!.ry|!.xt|!.dat/'` (4 Replies)
In a directory, there are two different file extensions (*.txt and *.xyz) having similar names of numerical strings (*). The (*.txt) contains 5000 multiple files and the (*.xyz) also contains 5000 multiple files. Each of the files has around 4000 rows and 8 columns, with several unique string... (5 Replies)
Hi,
I have a log file which might have certain paragraphs.
Switch not possible Error code 1234
Process number 678
Log not available Error code 567
Process number 874
.....
......
......
Now I create an exception file like this.
cat text.exp
Error code 1234
Process number 874 (7 Replies)
IN a file I need to check for 3 patterns if all the 3 patterns are in the file. I need to send out an email. All this needs to be done in korn shell script. Please advise. (1 Reply)
12-22-2017
