02-23-2009
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
How can I exclude reading lines in a file that contains the following:
filesystem:/home/pach/liv_patches 128005120 88456640 37270758 71% /home/patches
That is, all lines that contain and begins with filesystem: should not be processed/read from a file (5 Replies)
Discussion started by: paulsew
5 Replies
2. Shell Programming and Scripting
Hello,
I'm trying to make a shell script to skip comments from an XML file, but with the code below only deletes comments that are in one line.
Can you tell me what can be added here?
nawk '
{
if($0 !~/<!--/) { a=0 }
if($0 ~/<!--/ && $0 ~/-->/) {a=1}
if($0 ~/<!--/) {a=1}
if... (1 Reply)
Discussion started by: majormark
1 Replies
3. Shell Programming and Scripting
I am trying to determine what would be a fast and simple way to manipulate data that comes in a fixed width format. This data has 6 segments within a record. Each record needs to written out with a header and the 6 segments. Based on the value in column #6 the fields will be defined accordingly.... (4 Replies)
Discussion started by: Muga801
4 Replies
4. Shell Programming and Scripting
Hi Experts,
I am tryin to read a file and while doing so i need to skip the lines which start with a hash (#) char.
I thought of using a goto command but a lot of guys on this site say its not the good way to program. Moreover I am using a ksh shell which deos not support goto command.
... (4 Replies)
Discussion started by: bankimmehta
4 Replies
5. UNIX for Dummies Questions & Answers
Folks,
how do i skip the first line in a csv, while doing the read of a csv file in to a variable line by line.
eg :
do
echo $line
done < $rpt
where rpt is path to csv file
The initial 1st line is a garbage that i want to avoid, and start reading from 2nd line
... (2 Replies)
Discussion started by: venu
2 Replies
6. Shell Programming and Scripting
HI All,
I am trying to split a xml using awk. now the issue is i want to skip three lines from the xml file. first two and last one based on pattern. plz some one help. i am new to awk and struggling :wall:
<?xml version="1.0"?>
<notification>
.....
.....
.....
.....
........ (24 Replies)
Discussion started by: ganesan kulasek
24 Replies
7. UNIX for Advanced & Expert Users
Hi all,
I'm new in unix. Need some help here.
I have a file called server.cfg which contains the servers name, if I don't want to run on that server, I'll put a "#" infront it.
username1@hostname.com
username2@hostname.com
#username3@hostname.com
#username4@hostname.com... (17 Replies)
Discussion started by: beezy
17 Replies
8. Shell Programming and Scripting
Hello All,
I have a large file, more than 50,000 lines, and I want to split it in even 5000 records. Which I can do using
sed '1d;$d;' <filename> | awk 'NR%5000==1{x="F"++i;}{print > x}'Now I need to add one more condition that is not to break the file at 5000th record if the 5000th record... (20 Replies)
Discussion started by: ibmtech
20 Replies
9. UNIX for Dummies Questions & Answers
I need to amend the code blow such that it reads a "black list" before the "print" statement; if "substr($1,1,6)" is found in the "blacklist" it will ignore that record and continue. the code is from an awk script that is being called from shell script which passes the input values.
BEGIN { "date... (5 Replies)
Discussion started by: bazel
5 Replies
10. Shell Programming and Scripting
Hello,
I have a question regarding while loop and existence of files.
I am running under ubuntu 18.04 bionic, have around fifty video files inside the directory.
script:
for file in *.mp4
do
/root/bin/ffmpeg -i $file \
-i $(basename "${file/.mp4}").bs.srt \
-i $(basename... (12 Replies)
Discussion started by: baris35
12 Replies
LEARN ABOUT REDHAT
pamdeinterlace
pamdeinterlace(1) General Commands Manual pamdeinterlace(1)
NAME
pamdeinterlace - remove ever other row from a PAM/PNM image
SYNOPSIS
pamdeinterlace [-takeodd] [-takeeven] N [infile]
You can use the minimum unique abbreviation of the options. You can use two hyphens instead of one. You can separate an option name from
its value with white space instead of an equals sign.
DESCRIPTION
pamdeinterlace Removes all the even-numbered or odd-numbered rows from the input PNM or PAM image. Specify which with the -takeeven and
-takeodd options.
This can be useful if the image is a video capture from an interlaced video source. In that case, each row shows the subject 1/60 second
before or after the two rows that surround it. If the subject is moving, this can detract from the quality of the image.
Because the resulting image is half the height of the input image, you will then want to use pamstretch or pnmscale to restore it to its
normal height:
pamdeinterlace myimage.ppm | pamstretch -yscale=2 >newimage.ppm
OPTIONS
-takeodd
Take the odd-numbered rows from the input and put them in the output. The rows are numbered starting at zero, so the first row in
the output is the second row from the input. You cannot specify both -takeeven and -takeodd.
-takeeven
Take the even-numbered rows from the input and put them in the output. The rows are numbered starting at zero, so the first row in
the output is the first row from the input. This is the default. You cannot specify both -takeeven and -takeodd.
SEE ALSO
pamstretch(1), pnmscale(1)
11 November 2001 pamdeinterlace(1)