02-11-2013
Both awk and sed can read the next line or additional lines into the buffer so you can evaluate if you want to preserve the linfeed between those lines. I once wrote a sed to take whole pages and turn them into lines by reversing the new line and form feed. Then another sed could turn the pages into insert statements. Finally, I turned the form feeds back into new lines, so the displayed page from the db would be correct. The DB allowed 32k char().
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Is there any way to remove carriage retuns between the records?
These carriage returns are created in an excel cell by using Alt+enter, this is similar to new line...
We have input records separated by TABS and have carriage returns as below:
123 456 789 ABC "1952.00" 678 "abcdef
ghik... (5 Replies)
Discussion started by: acheepi
5 Replies
2. UNIX for Dummies Questions & Answers
Hi,
I have learned some of the Unix commands a way back and not sure of how to code them when needed in certain way, especially sed command. Here is my situation. I have an xml file with several tags. most of the tags start on the same line and end on the same line. However, data for some tags... (8 Replies)
Discussion started by: girish312
8 Replies
3. UNIX for Dummies Questions & Answers
i want to delete the line which is not started with numeric in vim.
vim temp.txt
Volume in drive D is DATA
Volume Serial Number is 8C52-2055
Directory of D:\data\notes
02/16/2010 03:09 PM <DIR> .
02/16/2010 03:09 PM <DIR> ..
09/11/1999 03:03 AM ... (5 Replies)
Discussion started by: Manabhanjan
5 Replies
4. Shell Programming and Scripting
Hello Friends,
Input File looks as follows:
>FASTA Header1
line1
line2
line3
linen
>FASTA Header2
Line1
Line2
linen
>FASTA Header3
and so on
.......
Output:
Want something as:
>FASTA Header1
line1line2line3linen
>FASTA Header2 (5 Replies)
Discussion started by: Deep9000
5 Replies
5. Shell Programming and Scripting
Hi,
I have input file contains sql queries i need to eliminate newlines from it.
when i open it vi text editor and runs
:%s/'\n/'/g
it provides required result. but when i run sed command from shell prompt it doesn't impact outfile is still same as inputfile.
shell] sed -e... (6 Replies)
Discussion started by: mirfan
6 Replies
6. Shell Programming and Scripting
I have
a='123, abc, def, ghi'
var1=`echo $a | awk -F", " '{print RS $1}'`
echo "something: $var1"
which outputs
something
123
how can I tell awk not to put a newline between fields? I want it to output:
something: 123 (4 Replies)
Discussion started by: unclecameron
4 Replies
7. Shell Programming and Scripting
input:
donkey
monkey
dance
drink
output should be:
donkey
monkey (8 Replies)
Discussion started by: cola
8 Replies
8. UNIX for Dummies Questions & Answers
Hello all. I am a beginner UNIX user who is using UNIX to work on a bioinformatics project for my university.
I have a bit of a complicated issue in trying to use sed (or awk) to "find and replace" bases (letters) in a genetics data spreadsheet (converted to a text file, can be either... (3 Replies)
Discussion started by: Mince
3 Replies
9. Shell Programming and Scripting
I was trying to simplify this from what I'm actually doing, but I started getting even more confused so I gave up. Here is the content of my input file:
Academic year,Term,Course name,Period,Last name,Nickname
2012-2013,First Semester,English 12,7th Period,Davis,Lucille
When I do this:
... (3 Replies)
Discussion started by: nextyoyoma
3 Replies
10. UNIX for Dummies Questions & Answers
I want to create a header with awk like this:
gawk 'BEGIN {print "List of Events"}
Desired output:
List of Events
Tennis
Baseball
But I am at a loss on how to do this. I can make a list like this:
List of Events
Tennis
Baseball
But I can't get a space to appear. I have... (4 Replies)
Discussion started by: newbie2010
4 Replies
GREP(1) General Commands Manual GREP(1)
NAME
grep - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines (with newlines excluded) that match the pattern, a regular expression as
defined in regexp(6). Normally, each line matching the pattern is `selected', and each selected line is copied to the standard output.
The options are
-c Print only a count of matching lines.
-h Do not print file name tags (headers) with output lines.
-i Ignore alphabetic case distinctions. The implementation folds into lower case all letters in the pattern and input before interpre-
tation. Matched lines are printed in their original form.
-l (ell) Print the names of files with selected lines; don't print the lines.
-L Print the names of files with no selected lines; the converse of -l.
-n Mark each printed line with its line number counted in its file.
-s Produce no output, but return status.
-v Reverse: print lines that do not match the pattern.
Output lines are tagged by file name when there is more than one input file. (To force this tagging, include /dev/null as a file name
argument.)
Care should be taken when using the shell metacharacters $*[^|()= and newline in pattern; it is safest to enclose the entire expression in
single quotes '...'.
SOURCE
/sys/src/cmd/grep.c
SEE ALSO
ed(1), awk(1), sed(1), sam(1), regexp(6)
DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)