02-22-2011
copy, then delete lines in file with sed using a pattern
I need to copy lines to a new file from files with sed using a pattern in char postions 1-3.
Then after the copy, I need to delete those same lines from the input files.
For example, string "ABC" in pos 1-3
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi all,
I have the following data in a file x.csv:
> ,this is some text here
> ,,,,,,,,,,,,,,,,2006/11/16,0.23
> ,,,,,,,,,,,,,,,,2006/12/16,0.88
< ,,,,,,,,,,,,,,,,this shouldnt be deleted
I need to use SED to match anything with a > in the line and delete that line, can someone help... (7 Replies)
Discussion started by: not4google
7 Replies
2. Shell Programming and Scripting
I have files of more than 10K lines that I need to delete lines that contain a pattern, but I want to keep the first few lines intact. Can this be done with sed? (7 Replies)
Discussion started by: tkg
7 Replies
3. Shell Programming and Scripting
I have a text file, a sample of which is as follows:
r/- * 0: WINDOWS/Microsoft.NET/Framework/v2.0.50727/ASP.NETWebAdminFiles/Images/headerGRADIENT_Tall.gif
r/- * 0: WINDOWS/SoftwareDistribution/Download/cf8ec753e88561d2ddb53e183dc05c3e/backoff.jpg
r/- * 0: ... (2 Replies)
Discussion started by: stumpyuk
2 Replies
4. HP-UX
I have one file which is having content as following...
0513468211,,,,20091208,084005,5,,2,3699310,
0206554475,,,,20090327,123634,85,,2,15615533
0206554475,,,,20090327,134431,554,,2,7246177
0103000300,,,,20090523,115501,89,,2,3869929
0736454328,,,,20091208,084005,75,,2,3699546... (7 Replies)
Discussion started by: ganesh.mandlik
7 Replies
5. Shell Programming and Scripting
I need to delete those lines from a file, which starts with 45.
How to do it? (3 Replies)
Discussion started by: mady135
3 Replies
6. Shell Programming and Scripting
Hello sed gurus. I am using ksh on Sun and have a file created by concatenating several other files. All files contain header rows. I just need to keep the first occurrence and remove all other header rows.
header for file
1111
2222
3333
header for file
1111
2222
3333
header for file... (8 Replies)
Discussion started by: gary_w
8 Replies
7. Shell Programming and Scripting
Hi,
I would like to delete lines in /etc/hosts on few workstations, basically I want to delete all the lines for a list of machines like this :
for HOST in $(cat stations.lst |uniq)
do
# echo -n "$HOST"
if ping -c 1 $HOST > /dev/null 2>&1
then
HOSTNAME_val=`rsh $HOST "sed... (3 Replies)
Discussion started by: albator1932
3 Replies
8. Shell Programming and Scripting
Hi
Im trying to do the following in sed. I want to delete any blank line at the start of a file until it matches a pattern and then stops. for example:
Input
output:
I have got it to work within a range of two patterns with the following:
sed '/1/,/pattern/{/^]*$/d}'
The... (2 Replies)
Discussion started by: duonut
2 Replies
9. Shell Programming and Scripting
Hello,
i have a question.
My problem is that i have a file like:
TEST
JOHN
ADAM
MICHAEL
SEBASTIAN
ANDY
i want find for MICHAEL and want delete lines like this:
TEST (4 Replies)
Discussion started by: eightball
4 Replies
10. Shell Programming and Scripting
Hi Everyone,
I have an unusual requirement. Here is where i am stuck for sometime now...
I have this text file.. lets say .. output.sql...
it has lot of entries... here below is part of the entry...
.. . . . . . . . . . . . . . . . .... (3 Replies)
Discussion started by: vivek d r
3 Replies
LEARN ABOUT DEBIAN
plan9-grep
GREP(1) General Commands Manual GREP(1)
NAME
grep, g - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
g [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines that match the pattern, a regular expression as defined in regexp(7) with
the addition of a newline character as an alternative (substitute for |) with lowest precedence. 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.
-e The following argument is taken as a pattern. This option makes it easy to specify patterns that might confuse argument parsing,
such as -n.
-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.
-f The pattern argument is the name of a file containing regular expressions one per line.
-b Don't buffer the output: write each output line as soon as it is discovered.
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 '...'. An expression starting with '*' will treat the rest of the expression as literal characters.
G invokes grep with -n and forces tagging of output lines by file name. If no files are listed, it searches all files matching
*.C *.b *.c *.h *.m *.cc *.java *.cgi *.pl *.py *.tex *.ms
SOURCE
/src/cmd/grep
/bin/g
SEE ALSO
ed(1), awk(1), sed(1), sam(1), regexp(7)
DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)