To be specified,what I want to do is:
if I create xxx.php,#!/usr/bin/env php will be the first line of the file
if I create xxx.py,#!/usr/bin/env python will be added first.
I'm a little bit confused with partitioning the filesystem in Linux. the difference between creating the file system with fdisk and mkfs (when formatting the disk). I can't clearly tell my problem, so please look at this picture:
View 2 Replies View RelatedI have a line in a text file that has 40 random characters within a tag and i want to change the characters to a new set of 40 random characters (alphanumeric a-z 0-9 etc)
The line in the text file looks like this:
Quote:
How would i go about doing that?
Also second question same as the above but how would i remove them instead of replacing them?
If I have a word in a text file and I need to replace it by another word (for example, i need to replace abc by fff) so what is the command I can type it?
I am using vi editor.
I have a String that I would like to sign using a given RSA Private key. I thought this would be relatively easy but I have not been able to find out how to do it, unless I'm looking to far into a simple problem. Do i have to put the string into a file, and sign the file, or can i just sign the string/message?
View 7 Replies View RelatedI need to parse the file of same name which exist on different servers and calculate the count of string existed in both files.Say a file abc.log exist on 2 servers.I want to search for string "test" on both files and calculate the total count of search string's existence.For example if file abc.log on server 1 has string "test" 2 times
and file abc.log on server 2 has string "test" 4 times.then the output will beStringName : Countexampletest : 6 timesNote : I have created the password less connectivity using ssh-keygen.
I would like to know how I can replace a string in one file with the complete contents of another life.
View 10 Replies View RelatedI'm a newbie despite using Ubuntu most of the time for nearly 3 years. There are some files which are created automatically in one of my ntfs partition. The files are khq, khp, kht, an autorun inf file and others. They seem to have been created while I was using ubuntu and even though I delete them,they appear again later. I have googled and have found few information that the files are malware. I will like to know if there is a known issue and solution. This is the first time i'm posting a thread.I hope i have post it at the right place and if not,
View 3 Replies View Relatedcreate one tar.gz file that contains my /home, /etc, /root directory.
a) The process ended with a 88GB file size (which is ok) but with the following message.Code: tar: Exiting with failure status due to previous errors.I have searched a little but I could not find what went wrong.
b) What are the limitations of tar and gz for backups. Of course I fully understand that they can not be used for differential backups (if it is called like that)
c) Let's say that my backup will be a file of 100GB and I want to see the contents of the .tar.gz. In kde there is a program called ark. Can ark handle so big files? Does it use my hard disk (eg. /tmp) to uncompress the file so to show me its contents? It might be the case that might be the compressed file is much bigger than the left space on the hard disk?
d) How can I do an integrity check when my tar.gz file is created?
The question is, as far as I know Ubuntu distro adds a user created with useradd to supplementary groups automatically. For instance, I want to enable sudo for all newly created users on my LiveCD and want them to be added to the group 'wheel' on creation. I'm sure it is possible to do it in Fedora, but how?
View 10 Replies View RelatedIs there any way to know which process had created any file in Linux Red Hat/CentOS 5?
View 2 Replies View RelatedDebugging some of my scripts after upgrading from Debian Lenny to Ubuntu 10.04. In so doing, I tripped over this "problem," the solution to which may give me a clue to others.
On a bash shell command line I created a file thusly:
sudo touch zero_file
and it lists as expected with default permissions 0644:
-rw-r--r-- 1 root root 0 2011-03-09 11:18 zero_file
But then this command fails
sudo echo abcdef >>zero_file
-bash: zero_file: Permission denied
I can place the command (minus the "sudo") in a script & run it under the auspices of sudo & it works. Am I missing something re the stdin redirection when using sudo?
i created a script file named myscript.shi ran this by typing sh myscript.sh and i got my outputbut,when i tried to execute by typing ./myscript.sh i received permission denied errori gave permission as chmod 777 myscript.shthen i executed by typing ./myscript.sh . It worked fineso i wanted to know whether using sh and ./ with permissions are same.. ?or did it work for only this.. are there any differences
View 1 Replies View RelatedI am just starting out in LINUX and I know the basic commands but I am a having a problem. I scoped the man pages but I can't get it. Maybe one of know... Can anyone tell me the cmd to figure out the system a file was created on? I just can't figure out this problem.
View 6 Replies View RelatedI am looking for a way to be mailed a new file when it is created in a certain directory.I have found tools that will notify me when a file is created, such as iWatch with iNotify, but is there a way to actually be sent the new file when it is created.It is only a short text log file, but I would like to read it in my inbox rather than have to login and open the file each time an event is logged.
View 2 Replies View RelatedI have set up a cron job in linux server using the command 'wget -q -o wget_outputlog url'
But on every run, an empty file being created at root.
How to stop this.
I want to run an executable file during or post linux installation which take input from user and closes on click of "ok" button. The thing i want to accomplish is something like the screen that turn up during the installation, like setting time or selecting some packages and then pressing next button...i want to do a similar stuff like the above said using my applicatio
View 2 Replies View RelatedI want to automaticly set the group ownership of user home directories to a group that the user is not part of. This is so that Apache can be part of this group and can access user public HTML directory, but other users are not able to access in any way the files in the users home directory. What I have seen that works manually is adding the user and then changing the group for the home directory. But I want to automatically set this when the user account is created. WHat I see happening is that when /etc/skel is copied, it automatically sets the group and ownership of everything to the users default group and ownership. I've seen some suggestions on setting permissions, but these don't seem to work because it seems that users are able to cd into a directory and not list it, but if they know the file name they can access the file.
View 1 Replies View RelatedI created a VM disk image with kvm-img, but I forget what was the max size of that disk image when I created it. Currently, its size is 6.2G, I want to install some large packages in that VM, so I want to make sure the disk image can expand to an adequate size.
View 1 Replies View RelatedI am using ubuntu 8.04
here is what i did
I ran
ffmpeg -i /sumeet/clip/friends introduction song.mp4 -s 160x120 -acodec amr_nb -vcodec mpeg4 -r 30 -ar 8000 -ac 1 ~/Desktop/friends.mp4
now I compared sample video created by mobile file I created above.code...
I am trying to remove all the files in a directory hierarchy which a certain string inside the file (not the file name, it is the file content).
I can list out all the file name which has a string in the file using 'grep -r -l mystringlooking for'.
But how can I remove all the files returned by the grep ? I am trying this on ubuntu.
I am searching for Class declaration on a site with hundreds of PHP files, how can I do this in the current folder and subfolders using GREP?
I tested cding to the folder and then something like
grep -r 'class MyClass' *.php
I have a string like $(SOMETHING) and want to remove '(' and ')' in a script file. How can I do that? I read that sed command is a filtering utility but don't know how to use it.
View 12 Replies View RelatedAssume I have a text file as belowabcdaaaaaaagfgkhahahahahahhahhgfThen gf would be returned
View 4 Replies View RelatedI am having difficulty getting sed to replace a string of text in an XML file, despite the fact that I have no trouble using grep to find that same string. Since the new string and old string to be replaced contain a lot of special characters, I thought it best to store them in variables as opposed to using a slew of backslashes:
OLD_STRING='<property name="webServiceHost">${jboss.bind.address}</property>'
NEW_STRING='<!--<property name="webServiceHost">${jboss.bind.address}</property>-->'
[Code]....
What is the vim command I have to use when I want to perform a text substitution not on the current line or on the whole document or on lines from number x to number y but just from the current cursor position down to the end (or up to the beginning) of the document?
View 1 Replies View Relatedi am having following lines in a file called test.
subscribe parser for dinesh
extend size for dinesh
subscribe parser for anish
unsubscribe parser for dinesh
extend size for arvind
I want to delete all lines which contains the string "dinesh". Is it possible.
I am trying to delete these symbols "[ ]" from a file but it says string not found. I tried: %s/[//g while editing the file not working also tried sed -e '/[/d' and sed '/]/d' still no job.
View 3 Replies View RelatedI have a file called Regions.ini that looks like this:
Code:
[Granite]
RegionUUID = 54ab7cd2-0e70-49b7-8020-8dbeb84c08d0
Location = 9991,10007
InternalAddress = 0.0.0.0
InternalPort = 9001
AllowAlternatePorts = False
ExternalHostName = 71.171.21.9
[Syenite]
RegionUUID = 8fc56fdd-0afd-4074-9432-0ae8f42b799f
Location = 9992,10007
InternalAddress = 0.0.0.0
InternalPort = 9000
AllowAlternatePorts = False
ExternalHostName = 71.171.21.9
What I need to do is find out what the IP address is after "ExternalHostName ="
After that I will need to compare that IP to whatismyip and if it's different then replace it but that is easy to do with sed. I just can't figure this simple hurdle out.
Is there any way i can find a file with specific word inside it.For example if i want to find a file which has some text written inside it.How would i form a command to search them?
View 5 Replies View Related