It's known as "greedy matching". The regular expression will always try and match the biggest string that satisfies the specified pattern, which in your case includes the embedded space.
In Perl, you can specify "non greedy" matching by following the * with a ?.
I think you could also have done...
...to isolate the datestamp.
I AM TRYING TO APPEND THE HOSTNAME OF A UNIX SERVER I WORK WITH SO I COULD DO A LOADING INTO A DATABASE.
THE COMMAND I AM USING IS
df -k | sed 's/^/dataserver /'
What I intend to do is append the hostname dynamically by using the hostname command instead of having to manually enter... (1 Reply)
Hi ,
echo "07/05/2008" | sed 's/\(..\)\/\(..\)\/\(..\)/\3\2\1/'
Output :: 20050708
Expected output is 20080507
Iam not getting the bug in this.
Thanks for the help
-- penchal (4 Replies)
Hi,
I have to use SED to remove the prefix "219-" from a text file containing phone numbers and I have to remove the ":" as well. I write the following code but it does not seem to work. Can someone help me please?
mohit@mohit-desktop:~$ sed -n s/219-/" "/p corp_phones_bak > noprefix1... (2 Replies)
Hi All!
I am trying to use shell variables in a sed statement, but facing an error.I used the double quotes instead if single quotes in the sed statement.
# sed -i -e "s/password/$decoded/g;" $CATALINA_HOME/conf/server.xml
sed: -e expression #1, char 11: unterminated `s' command
#
... (5 Replies)
I have a file with a lot of numbers in it and I need to clean it up and make it look nice and proper. I found this little gem of a one-liner and basically understand what it is doing but I would like to further understand what each part of the command is doing. Being a newb, I am just trying to... (2 Replies)
Hi all
In input file I have records like this:
0,1,0,87,0,0,"6,87","170,03",0,"43,5",0,0,0,0,"6,87","126,53"and in output file I need that these records transforms in :
0 1 0 87 0 0 6,87 170,03 0 43,5 0 0 0 0 6,87 126,53
Could you help me in this case? Please (3 Replies)
Hi
i am stuck with a very silly problem :mad:
below is my code
echo 201010_1212_121.xml
i need to replace xml with csv so i did
echo 201010_1212_121.xml | sed 's/.*\.xml/.*\.csv/'
echo 201010_1212_121.xml | sed 's/*.xml/*.csv/'
echo 201010_1212_121.xml |... (4 Replies)
Hi Folks,
I want to replace these numbers with words as the following:
$echo 1 11 223
I want to replace each number with it name (e.g. "1" replaced with "one", etc.) just to determine how sed works in such case. Thanks in advance:).
Leo (8 Replies)
I don't know if you guys get this problem sometimes at Terminal but I had been having this problem since yesterday :( Maybe I overdid the Terminal. Even the codes that used to work doesn't work anymore.
Here is what 's happening:
* I wanted to remove lines containing digits so I used this... (25 Replies)
Discussion started by: Nexeu
25 Replies
LEARN ABOUT BSD
re_comp
REGEX(3) Library Functions Manual REGEX(3)NAME
re_comp, re_exec - regular expression handler
SYNOPSIS
char *re_comp(s)
char *s;
re_exec(s)
char *s;
DESCRIPTION
Re_comp compiles a string into an internal form suitable for pattern matching. Re_exec checks the argument string against the last string
passed to re_comp.
Re_comp returns 0 if the string s was compiled successfully; otherwise a string containing an error message is returned. If re_comp is
passed 0 or a null string, it returns without changing the currently compiled regular expression.
Re_exec returns 1 if the string s matches the last compiled regular expression, 0 if the string s failed to match the last compiled regular
expression, and -1 if the compiled regular expression was invalid (indicating an internal error).
The strings passed to both re_comp and re_exec may have trailing or embedded newline characters; they are terminated by nulls. The regular
expressions recognized are described in the manual entry for ed(1), given the above difference.
SEE ALSO ed(1), ex(1), egrep(1), fgrep(1), grep(1)DIAGNOSTICS
Re_exec returns -1 for an internal error.
Re_comp returns one of the following strings if an error occurs:
No previous regular expression,
Regular expression too long,
unmatched (,
missing ],
too many () pairs,
unmatched ).
3rd Berkeley Distribution May 15, 1985 REGEX(3)