This will remove the comma only if it is followed by " )" and - even worse - will remove any comma followed by " )" in the line.
A more robust approach will be to search for the last occurrence of a character in the line and remove this:
This will remove the last occurrence of "," in a line, regardless of what it is followed. This method can be used to search for (and maybe change) any last character of some sort:
searches for <character> followed by any number of (*) "not-characters" (this is what "[^<character>]" means: "^" is a logical NOT for character classes) followed by a line-end. Therefore, if it matches, it will match only the last character of a sort in a line.
hi,
I'm trying to use sed to erase everything, up to, and including, the first closing parenthesis. for example:
input: blah blah blah (aldj) test (dafs) test test.
output: test (dafs) test test.
how would i do this?
I was fooling around with the parenthesis, and i only got it to apply to... (5 Replies)
Hi All,
silly question that I'm sure is easy to answer for a more experienced coder...
I have a file called test.txt containing the following text...
need, to, break, this, line, into, individual, lines
using sed, I'd like to make the file look like this...
need
to
break
this
line... (5 Replies)
Hi All,
i have a file test.txt as shown below,
1,test,test111
2,rest,rest222
i want to replace the commas by tab delimiter..,
it should be like,
1 test test111
2 rest rest222
i tried the following code,
sed 's/,/\\t/g' test.txt >> ouptut.txt (9 Replies)
hi
i want to replace spaces by comma
my file is
ADD 16428 170 160 3 WNPG 204 941 No 204802
ADD 16428 170 160 3 WNPG 204 941 No 204803
ADD 16428 170 160 3 WNPG 204 941 No 204804
ADD... (9 Replies)
Hi,
How can I replace the 6th comma on each line (of a csv) with a space?
Any online tutorials with plenty of examples using sed would be very useful.
Alex (2 Replies)
In a LaTeX manuscript, I need to replace many occurrences of
\emph{some string}
with some string, i.e. whatever string is inside. The string inside often may extend over several lines, and there may be other occurences of curly brackets inside it. So for example
\emph{this \it{is} a... (5 Replies)
Hi All,
Could some one help me on one of my requirement below:
I have a sequential file with 4fields in it and it is a comma (,) seperated file.
Delimeter is 'comma'.
But in of the file column for ex: 3rd column it is 'Description' (column name) I am getting the values with commas.... (6 Replies)
I have a huge file
which is pipe delimiter and i want to replace the pipe delimiter to a comma
Please Help as its v urgent.
Ex: parent|child|alias|....Heading of the file...and the data is of similar structure. (4 Replies)
I have the following data and want to put parenthis around the numbers:
PARTITION PERIOD_MIN VALUES LESS THAN 10649 TABLESPACE ODS_DAILY_MF_AUM,
PARTITION PERIOD_10649 VALUES LESS THAN 10650 TABLESPACE ODS_DAILY_MF_AUM,
PARTITION PERIOD_10650 VALUES LESS THAN 10651 TABLESPACE... (2 Replies)
Discussion started by: BeefStu
2 Replies
LEARN ABOUT PLAN9
regexp
REGEXP(6) Games Manual REGEXP(6)NAME
regexp - regular expression notation
DESCRIPTION
A regular expression specifies a set of strings of characters. A member of this set of strings is said to be matched by the regular
expression. In many applications a delimiter character, commonly bounds a regular expression. In the following specification for regular
expressions the word `character' means any character (rune) but newline.
The syntax for a regular expression e0 is
e3: literal | charclass | '.' | '^' | '$' | '(' e0 ')'
e2: e3
| e2 REP
REP: '*' | '+' | '?'
e1: e2
| e1 e2
e0: e1
| e0 '|' e1
A literal is any non-metacharacter, or a metacharacter (one of .*+?[]()|^$), or the delimiter preceded by
A charclass is a nonempty string s bracketed [s] (or [^s]); it matches any character in (or not in) s. A negated character class never
matches newline. A substring a-b, with a and b in ascending order, stands for the inclusive range of characters between a and b. In s,
the metacharacters an initial and the regular expression delimiter must be preceded by a other metacharacters have no special meaning and
may appear unescaped.
A matches any character.
A matches the beginning of a line; matches the end of the line.
The REP operators match zero or more (*), one or more (+), zero or one (?), instances respectively of the preceding regular expression e2.
A concatenated regular expression, e1e2, matches a match to e1 followed by a match to e2.
An alternative regular expression, e0|e1, matches either a match to e0 or a match to e1.
A match to any part of a regular expression extends as far as possible without preventing a match to the remainder of the regular expres-
sion.
SEE ALSO awk(1), ed(1), sam(1), sed(1), regexp(2)REGEXP(6)