sed reads a line at a time, so the actual number of lines is not a problem as such. If you do complex combining of lines, you might use up a lot of memory, but if your lines aren't particularly long and you don't need to process over long ranges, you should be fine even with a large input file.
You basically want to merge lines with commas until there are three commas, correct?
There are dialect differences between different sed implementations, but this works for me on Ubuntu Linux. In particular, the \n might be something you need to fiddle to get right.
I am fairly new to scripting. But I have been able to extract and format all of my information required into one file. My issue is that one character is on a separate line. I need to be able to add the character to the previous line.
ex.
abcdefghi
1
bcdefghij
3
cdefghijk
4
need to... (4 Replies)
Hi all:
I have a file in which the contents are as following:
...
This is a test
ONE
TWO
Hello, world!
XXX YYY CCC
test again
three, four
five
six
seven
world
AAA BBB QQQ
test
eight, nine
world (3 Replies)
Got another sed question :)
My text block is
I need to do the following:
If (and only if) the line starting with 10002,11 is followed by a line starting with 10004,9 , insert the line 10003,9 between the 2
Thus, my output should be
I tried
but this gives me
(the order... (3 Replies)
This is the problem actually:
This regex:
egrep "low debug.*\".*\"" $dbDir/alarmNotification.log
is looking for data between the two quotation marks:
".*\"
When I hate data like this:
low debug 2009/3/9 8:30:20.47 ICSNotificationAlarm Prodics01ics0003 IC... (0 Replies)
Hi,
I'm using AIX(ksh shell).
> cat temp.txt
"a","b",0
"c",bc",0
"a1","b1",0
"cc","cb",1
"cc","b2",1
"bb","bc",2
I want the output as:
"a","b","c","bc","a1","b1"
"cc","cb","cc","b2"
"bb","bc"
I want to combine multiple lines into single line where third column is same.
Is... (1 Reply)
Hi All
I need a small help for the below format in making a small script in Perl or Shell.
I have a file in which a single line entries are broken into three line entries.
Eg:
I have a
pen and
notebook.
All i want is to capture in a single line in a separate file.
eg: I have a pen and... (4 Replies)
Hi All,
I have a input file as sample below
<this is not starting of file>
record
line1
line2
line3
end
line4
line5
record
line6
line7
line8
my requirement is this, i want to select a pattern between first record and end, whatever is written between first record and end.
and... (0 Replies)
I need to run a cronjob that will monitor a directory for files with a certain extension, when one appears I then need to run the below scripts How do I go about combining the following sed statements into one script? and also retain the original filename.?
sed 's/71502FSC1206/\n&/g' # add a... (2 Replies)
:confused:Hello -- i just joined the forums. I am a complete noob -- only about 1 week into learning how to program anything... and starting with linux.
I am working in Linux terminal.
I have a folder with a bunch of txt files. Each file has several lines of html code. I want to combine... (2 Replies)
Hi Everyone,
On my Linux box I have a text file having block of few lines and this block lines separated by one blank line. I would like to format and print these lines in such a way that this entire block of lines will come as single comma separated line & again next block of lines in next... (7 Replies)
Discussion started by: gr8_usk
7 Replies
LEARN ABOUT MOJAVE
paste
PASTE(1) BSD General Commands Manual PASTE(1)NAME
paste -- merge corresponding or subsequent lines of files
SYNOPSIS
paste [-s] [-d list] file ...
DESCRIPTION
The paste utility concatenates the corresponding lines of the given input files, replacing all but the last file's newline characters with a
single tab character, and writes the resulting lines to standard output. If end-of-file is reached on an input file while other input files
still contain data, the file is treated as if it were an endless source of empty lines.
The options are as follows:
-d list Use one or more of the provided characters to replace the newline characters instead of the default tab. The characters in list
are used circularly, i.e., when list is exhausted the first character from list is reused. This continues until a line from the
last input file (in default operation) or the last line in each file (using the -s option) is displayed, at which time paste
begins selecting characters from the beginning of list again.
The following special characters can also be used in list:
newline character
tab character
\ backslash character
Empty string (not a null character).
Any other character preceded by a backslash is equivalent to the character itself.
-s Concatenate all of the lines of each separate input file in command line order. The newline character of every line except the
last line in each input file is replaced with the tab character, unless otherwise specified by the -d option.
If '-' is specified for one or more of the input files, the standard input is used; standard input is read one line at a time, circularly,
for each instance of '-'.
EXIT STATUS
The paste utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
List the files in the current directory in three columns:
ls | paste - - -
Combine pairs of lines from a file into single lines:
paste -s -d '
' myfile
Number the lines in a file, similar to nl(1):
sed = myfile | paste -s -d '
' - -
Create a colon-separated list of directories named bin, suitable for use in the PATH environment variable:
find / -name bin -type d | paste -s -d : -
SEE ALSO cut(1), lam(1)STANDARDS
The paste utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.
HISTORY
A paste command appeared in Version 32V AT&T UNIX.
BSD June 25, 2004 BSD