10-20-2008
I normally use sed in this context
## print line number 1 to 2
sed -n '1,2p' XXX.dat > output_file
## cat another file
cat YYY.dat >> output_file
## print remaining lines from file 1
sed '1,2d' XXX.dat >> output_file
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1. Shell Programming and Scripting
Dear All,
I have a file called football where i have a list of 11 players each on different lines.
I wish to add a name of another player on the first line.
I have created a file called footballscript in vi writing the following sed command to achieve this ...
cat football | sed -e '1 i\... (4 Replies)
Discussion started by: Mary_xxx
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2. Shell Programming and Scripting
I'm sure you guys have answered this elsewhere but I can't seem to find where so here goes.
#!/bin/bash
n=120
a=$(sed '120q;d' energy.xvg)
while ;do
a=$(sed $n'q;d' energy.xvg)
echo "$a \n" > newfile
n=$(($n+100))
done
exit 0
that script should read the file energy.xvg, start at... (1 Reply)
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3. Shell Programming and Scripting
I need a perl script to find and replace a specific pattern in a file to a new line.
BAsically I have a single line data in a file with 10 mb to 200 MB. I want to put a new line based on a specific pattern to open the file in Excel / Access.
Following is the sample data in a file
... (1 Reply)
Discussion started by: portalfaq
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4. Shell Programming and Scripting
I have posted it previously but somehow could not delete the previous post.I felt i could not explain the problem statement well.
Here t goes.I have a file say File1. Now i need a specific pattern from the lines to be added to the other line.
File:
red blue green ABC.txt@ABC END
black... (1 Reply)
Discussion started by: ngupta
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5. Ubuntu
Hi;
I've been searching posts to find a solution to what I'm trying to do, but I've have NOT found anything yet.
I have a file (file1) with 300K columns and 1411 rows, the columns don't have a column no. header (No header at all) and I'm trying to fetch the information from specific columns.... (3 Replies)
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6. Shell Programming and Scripting
Hi,
I have this line:
ip=111.222.133.144,mac=00:16:3E:2A:08:3C,vifname=veth360','ip=10.2.3.4,vifname=veth360a'
^
|
-------
I want to insert this IP 144.133.222.111 between "144"... (4 Replies)
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7. UNIX for Dummies Questions & Answers
I have a csv flatfile with a few million rows. I need to replace a field (field number is 85) in the file with a sequential number.
As an example, let's assume there are only 4 fields in the file:
A,A,,32
A,A,,27
A,B,,43
C,C,,354
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8. Shell Programming and Scripting
Im attempting to insert the contents of File1 at a specific point of File2.
File1
AD004 0 1 0 0 1 0 1 0 0 1 0 1 0 1 0 1
File2
AA001 0 1 0 0 1 0 1 0 0 1 0 1 0 1 0 1
AB002 0 1 0 0 1 0 1 0 0 1 0 1 0 1 0 1
AC003 0 1 0 0 1 0 1 0 0 1 0 1 0 1 0 1
Result
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9. Shell Programming and Scripting
hello ..
I am new to perl scripting, I have a text file, and would like to insert 3 new lines into the same file at different line numbers using perl scripting. Any Help regarding this will be very useful.
say the file is sample.txt, contents are
aaaaa
bbbb
ccccc
dddd
eeeee
ffffffff... (4 Replies)
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10. Shell Programming and Scripting
Hi,
consider a file called mobile.txt as follows:
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LEARN ABOUT OPENDARWIN
uniq
UNIQ(1) BSD General Commands Manual UNIQ(1)
NAME
uniq -- report or filter out repeated lines in a file
SYNOPSIS
uniq [-c | -d | -u] [-i] [-f num] [-s chars] [input_file [output_file]]
DESCRIPTION
The uniq utility reads the specified input_file comparing adjacent lines, and writes a copy of each unique input line to the output_file. If
input_file is a single dash ('-') or absent, the standard input is read. If output_file is absent, standard output is used for output. The
second and succeeding copies of identical adjacent input lines are not written. Repeated lines in the input will not be detected if they are
not adjacent, so it may be necessary to sort the files first.
The following options are available:
-c Precede each output line with the count of the number of times the line occurred in the input, followed by a single space.
-d Only output lines that are repeated in the input.
-f num Ignore the first num fields in each input line when doing comparisons. A field is a string of non-blank characters separated from
adjacent fields by blanks. Field numbers are one based, i.e. the first field is field one.
-s chars
Ignore the first chars characters in each input line when doing comparisons. If specified in conjunction with the -f option, the
first chars characters after the first num fields will be ignored. Character numbers are one based, i.e. the first character is
character one.
-u Only output lines that are not repeated in the input.
-i Case insensitive comparison of lines.
DIAGNOSTICS
The uniq utility exits 0 on success, and >0 if an error occurs.
COMPATIBILITY
The historic +number and -number options have been deprecated but are still supported in this implementation.
SEE ALSO
sort(1)
STANDARDS
The uniq utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.
HISTORY
A uniq command appeared in Version 3 AT&T UNIX.
BSD
June 6, 1993 BSD