I am really need help with the regular expression in SED. From input file, I need to extract lines that have the port number (sport or dport) as defined. The input file is something like this
time=1209515280-1209515340 dst=192.168.133.202 src=208.70.8.23 bytes=2472 proto=6 sport=80 dport=1447... (6 Replies)
hi
sed -e '/<group>/!s/group\(.*\)/group\: files compat/' /etc/nsswitch.conf
returns
group: files compat
netgroup: files compat
How to prevent changing netgroup entry??
thank you (1 Reply)
ok, apparently this is a very difficult question to answer based on my searches on google that came up fruitless.
what i want to do is grep through a file for words that match a specified string.
but the thing is, i keep getting all words in the file that have the string in them.
say for... (27 Replies)
I have a huge file and want to separate it into several subsets.
The file looks like:
C1 C2 C3 C4 ... (variable names)
1 ....
2 ....
3 ....
:
22 ....
23 ....
I want to separate the huge file using the column 1, which has numbers from 1 to 23 (but there are different amount of... (8 Replies)
Florida State University, Tallahassee, FL, USA, Dr. Whalley, COP4342 Unix Tools.
This program takes much of my previous assignment but adds the functionality of printing the concatenated line numbers found within the input.
Sample input from <> operator:
Hello World
This is hello
a sample... (2 Replies)
Hi experts,
I have a file with regexes which is used for automatic searches on several files (40+ GB).
To do some postprocessing with the grep result I need the matching line as well as the match itself.
I know that the latter could be achieved with grep's -o option. But I'm not aware of a... (2 Replies)
Dear all,
I have a data like below (n of rows=400,000) and I want to extract the rows with certain strings. I use code below. It works if there is not too many strings for example n of strings <5000. while I have 90,000 strings to extract. If I use the egrep code below, I will get error:
... (3 Replies)
hi ,
i have a file test.dat which contains following data.
test.dat
XY|abc@xyz.com
XY|abc@xyz.com
ST|abc@xyz.com
ST|abc@xyz.com
ST|XYZ@abc.com
FK|abc@xyz.com
FK|STG@xyz.com
FK|abc@xyz.com
FK|FKG@xyz.com
i want to know the count of XY,ST,FK.
i.e XY = 2 , ST = 3 , FK = 4
I am... (4 Replies)
I have a file change.sed
more change.sed
I fire the below command inorder to replace "190.169.11.15" with "10.4.112.240" in proxy.logsed -f change.sed proxy.log proxy.log has the below entry
more proxy.log
The command replaces both 190.169.11.15 & 190.169.11.155 as below:
I am expecting... (17 Replies)
Discussion started by: mohtashims
17 Replies
LEARN ABOUT DEBIAN
cdbmake
cdbmake(1) General Commands Manual cdbmake(1)NAME
cdbmake - create a constant database
SYNOPSIS
cdbmake cdb cdb.tmp
DESCRIPTION
cdbmake reads a series of encoded records from its standard input and writes a constant database to cdb.
cdbmake ensures that cdb is updated atomically, so programs reading cdb never have to wait for cdbmake to finish. It does this by first
writing the database to cdb.tmp and then moving cdb.tmp on top of cdb. If cdb.tmp already exists, it is destroyed. The directories con-
taining cdb.tmp and cdb must be writable to cdbmake; they must also be on the same filesystem.
cdbmake always makes sure that cdb.tmp is safely written to disk before it replaces cdb. If the input is in a bad format or if cdbmake has
any trouble writing cdb.tmp to disk, cdbmake complains and leaves cdb alone.
RECORD FORMAT
Records are indexed by keys. A key is a string. cdb is structured so that another program, starting from a key, can quickly find the rel-
evant record. cdbmake allows several records with the same key, although most readers take only the first record, and cdbmake slows down
somewhat if there are many records with the same key.
cdbmake and cdbdump(1) preserve the order of records.
A record is encoded for cdbmake as +klen,dlen:key->data followed by a newline. Here klen is the number of bytes in key and dlen is the
number of bytes in data. The end of data is indicated by an extra newline. For example:
+3,5:one->Hello
+3,7:two->Goodbye
key and data may contain any characters, including colons, dashes, newlines, and nulls.
Keys and data do not have to fit into memory. A database cannot exceed 4 gigabytes.
cdb is portable across machines.
SEE ALSO cdbdump(1), cdbget(1), cdbstats(1)cdbmake(1)