I am starting to learn shell programming, but I couldn't accomplish a simple thing that can be done with sed, awk.Its simple, I am dynamically getting an IP number, and a rule name, that I need to save them on a single file on a specific line number.I found how to enter a value on a specific line, but couldn't understand how to enter the second value.
View 3 RepliesI m writing a script to delete a line at particular location.
But i m unable to use variable for specifying line number.
For example.
Code:
works fine and deletes 7th line from my file
But
Code:
gives following error.
Code:
I have two files, file1.traj and file2.traj. Both these files contain identical data and the data are arranged in same format in them. The first line of both files is a comment.
At line 7843 of both files there is a cartesian coordinate X, Y and Z ( three digits ). And at line 15685 there is another three digits. The number of lines in between two cartesian coordinates are 7841. And there are few hundreds of thousands of lines in a file.
What I need to do is copy the X Y Z coordinate (three digits) from file1.traj at line 7843 and paste into file2.traj at the same line number as in file1.traj. The next line will be 15685 from file1.traj and replace at line 15685 at file2.traj. And I dont want other lines (data) in file2.traj get altered. This sequence shall be going on until the end of the file. Means copy and substitude the selected lines from file1.traj into file2.traj.
I tried to use paste command but I cant do for specified line alone.
Here i showed the data format in the file. I used the line number for clarity purpose.
Code:
I have downloaded the backtrack 4 r2 but when I started it, it didn't show me the line to enter the user name and the password
View 5 Replies View RelatedI want to replace specific character in a file after every specific line. example as follows.
O 000000000000000000
A 111111111111111111
C 222222222222222222
[code]...
i have a problem about deleting a line from a text file which contains two specific patterns. i am using "sed -i "/$name/ d" peop.txt" but i must use one more variable which is surname.
"
burak:ak:3242:2342:dsa@a.com
gokhan:an:432:4234:da@a.com
"
and this is the code of text file. and the second question when i use "/$name/ d" it deletes not only the names which are macthing with $name but also all words that contain $name. so how can i fix these problems_?
Is this the correct way to show the line count of a specific file?
cat file | grep * -c
I have a log file that contains information like this:
----------------------------
r11141 | prasath-palani | 2010-12-23 16:21:24 +0530 (Thu, 23 Dec 2010) | 1 line
Changed paths:
M /projects/
M /projects/
[code]....
what i need is, i need to copy the data given between the "---" to seperate files, for, e.g. the first set of data between the "---" should be in one file and another set of data in another file.
I'm new to the shell scripting. can any one help in creating shell script for matching the content of the specific variable with file. it should remove that line from the file if line is containing same value as variable and keep the other content as it is.i used grep -v for accomplishing the same. But grep will remove the pattern which is similar.For eg. Assume file "test" contain datas :aaffif i used grep -v command for the pattern "a" to this file this will remove content "aa" from the file. I want the pattern only "a" should remove from the file, if it is existing. otherwise it should throw alert content not exists.
View 5 Replies View RelatedI'm trying to add text to a file for a specific group of users, I'll need to do examples as I can't think of an easy way of explaining, my file is like this:
Code:
users{
user1
user2
[code]....
At the present my code lists all the available groups, how would I add a user to a specified group? (e.g add "members user3") to the end of group 1 for example. So the code ends up like this
Code:
members user2,user3
Anyone know a simple command line to check for a specific email - by subject - on an SSL secured IMAP server?
View 2 Replies View RelatedSucceeded in connecting to internet using my wll phone. I can now connect using 'wvdial' command in root terminal. But I want to connect through terminal. I tried 'sudo wvdial' command. Then I am asked for my password. But I cannot type my password there. When I type, nothing appears on the terminal window. Ofcourse there's no problem with my keyboard.
View 5 Replies View RelatedI like running sql queries from the command line.
Code:
sqlite3 foo.db "select * from some table"
How can I specify
Code:
.mode column
at the command line?
Is there a package I can download for Ubuntu that would allow me to type in,for example, cd [tab key] and then it would go through the recent cd commands I've typed in?
View 2 Replies View RelatedI need user to input a password through command line in Windows cmd prompt. Is there a way to encrypt the input (such as put it into ......) when user is typing ?
View 2 Replies View Relatedbasically i have to create a simple program with will continually read input from the user until they enter a blank linei know how to read in certain input but not sure how to get it continually in a loop
View 2 Replies View RelatedWhat I am trying to achive is the editing of /etc/ssh/sshd_config I have the line
Code: AllowUsers usera userb
And I want to be able to append to the end of this line from a bash script.I have muddled together from other sites and got the following:-
Code: sed -e "s/^AllowUsers/� userc/" -i /etc/ssh/sshd_config
But this appears to add userc directly after AllowUsers and not after userb
how can i add a comment to specific line with sed?
View 2 Replies View RelatedI have a file which is having 10000+ lines. I want to view the file from 500th line onwards. How will i do that.
View 1 Replies View RelatedI would like to replace 'xxxx' with 'yyyy' which is in a file xyz.csproj not sure of what 'xxxx' is, it can be 3055, 4056, 7089 etc. I know it always appears at line # 5 and at character 50.
<Reference Include="System.Management" />
<Reference Include="System.ServiceProcess" />
<Reference Include="System.Windows.Forms" />
[code]....
I want to append a variable string to the end of a specific line. not like append the same string to each line. like in my file i have 4 columns, i want to add a string in 5th column in some fixed row.
View 4 Replies View Relatedfor example
else {
for fileDOC in $location/*.doc
do
[code]...
I have a requirement to print images (two to be precise) from the command line of a given size and without losing too much quality.
So, I may have two images, a.jpg and b.jpg which may be 4x4" and 6x4" respectively (the sizes may vary). I need to be able to print both these on a single sheet of paper (one under the other) at a given size for each - so a may be 2x2" and b may be 3x2" - the aspect ratio will always be maintained (or as near as possible!)
I am currently doing this a very messy way (because I don't know any other way!!) - basically I am converting the picture to a given size using a set density using convert and then concatenating the two using montage.
Here is part of my script:
Code:
Don't worry too much about the case statement at the end - that is just to be able to select to print either A, B or A and B.
The issue with this is that is doesn't work great if the aspect ratio is not maintained perfectly and also, it loses quite a lot of quality on the print.
I have a very old windows app which I wrote years back in VB (o dear! ) which does the same thing and the quality is fine (I am running it through wine). I want it to be command line though because I want to run it as part of other scripts etc.
I just got an email from google saying my site contained malware. It has a line in it: "<script src='http://whitepix.info/3'></script>". I've noticed its recursively in all my .html and .txt files in my website. Can I make a linux script to run that will go through all my .html and txt files recursively and delete that line from them? I don't know how it got in all of them.
View 6 Replies View RelatedI am pasting sudo commands without problems as a user (ales in my case) and then immediately the ask the user password.
The keyboard seems to be dead, no keys work, not allowing me to enter the password.
i need to write a short script that will compress a specific folder that`s on the Desktop (and all it`s content) and also will encrypt it with a password that is inside the script --->meaning it wont ask for a password+verification when compressing+encrypting
View 1 Replies View RelatedI want to record an internet radio station starting at 2:00am tomorrow morning. The specific program on the radio station lasts until 6:00am. The command I need to run to record the station is: Code:mplayer http://wjcu.jcu.edu:8001/listen.pls -ao pcm:file=indie_heat_of_the_night.wav -vc dummy -vo nullI'd use cron, but 1. I'm not sure how to and 2. it seems unnecessarily complicated for something that I only want to run once. If cron is the only/easiest solution, I guess I'll just have to resort to that, but I'd rather not.
View 12 Replies View RelatedHow to create cron tab when DSL line down set automatically restart the network service while DSL line up?
View 3 Replies View RelatedAfter running the following command, I get:
[root@yukiko /]# find / -iname .bashrc
/home/clamav/.bashrc
/home/vpopmail/.bashrc
/etc/skel/.bashrc
/root/.bashrc
But I would like to have a command that prints a specific line by supplying the command with the line number, for example:
[root@yukiko /]# find / -iname .bashrc | getline(2)
/home/vpopmail/.bashrc
Is there such a command on CentOS?
I have several files with many lines something like this:
I'm trying to write a script that will count the number of characters per line that doesn't contain a ">" symbol and give me an average of those values. I have most of the script together but I can't figure out how to connect some of the steps.
Code: