You mysteriously switched "####" in your examples to "XXXX". Which is it?
Code:
sed -n "/####/q;p" file
No mystery. My question is how to detect EOF when the defined delimiter is not present.
RudiC's answer was perfect. I want to do other things in the while loop with $line and I want to do things with the rest of stdin after the second delimiter line.
Mike
This User Gave Thanks to Michael Stora For This Post:
Hi All,
Although its a basic question the last 2 hours of googling and trying didnt help me to achieve what i want. Maybe some one can help me
I have a text file
text1.txt:
blablablabla
A B C
D E F
and i would like to read to read what is on position E (line 3 column 2) in a... (2 Replies)
Hi All,
I want to find if a certain exe is running and if it is running i want to stop the execution of this exe (the exe has been created by me) on solaris.
What are the unix command i need to use and can i put these comand in a shell script or create a new exe to do this task (i would... (4 Replies)
Hi All,
I have the same problem as the one posted in
https://www.unix.com/shell-programming-scripting/96097-how-read-value-specific-line-column-csh-variable.html
but I'm using bash.
Can anyone tell me how I have to modify the code to make it bash compatible?
eval `awk 'NR==3{print "set... (5 Replies)
How can I do this? Actually I have a file which contains a path
e.g.
/home/john/Music/hello.mp3
and I want to take only the filename (hello.mp3) So, I need to read the file from its end to its start till the character "/"
Is this possible?
Thanks, I am sure you'll not disappoint me here!
Oh,... (9 Replies)
Say the input was as follows:
Brat 20 x 1000 32rf
Pour 15 p 1621 05pr
Dart 10 z 1111 22xx
My program prompts for an input, what I want is to use the input to locate a specific field. Like if I type in, "Pou" then it would return "Pour" and just "Pour"
I currently have this line but it is... (6 Replies)
I have a text file which is having 30000 lines in it. I have to create a xml file for each 10000 lines until all the lines in the text files are written. Also please help how can i get number of lines in the text file in a shell variable? (19 Replies)
Hi,
I want to read the file from nth line (where n is an integer) to until I encounter @ char.
Can any one please help me how to do this?
Thanks. (3 Replies)
Hi...friends....
I want to create inventory...information for that I need to read some specific row say 2nd row from 1st 3 column and and write data with particular file used, I have some more column also but I need only 3 column data of first entry after header
I attached sample file..those... (12 Replies)
Hi,
I have a ldif file like below:
version: 1
dn: cn=Test Group,ou=Applications,dc=xyz,dc=com
objectClass: groupOfUniqueNames
objectClass: top
cn: Test Group
uniqueMember: uid=abc,ou=People,o=xyz,o=Corporate,dc=xyz,dc=com
dn: cn=Test Sub Group,cn=Test... (4 Replies)
my requirement is,
consider a file output
cat output
blah sdjfhjkd jsdfhjksdh
sdfs 23423 sdfsdf sdf"sdfsdf"sdfsdf"""""dsf
hellow there
this doesnt look good
et cetc etc
etcetera
i want to replace a line of line number 4 ("this doesnt look good") with some other line
... (3 Replies)
Discussion started by: vivek d r
3 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)