I'm having problems with bash quoting. Maybe someone can tell me what's going on.. Basically, I need to create a command line inside a bash script that contains arguments that contain spaces and bash variables that need to be expanded.
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I've written myself a linux program "program" that does something with a regular expression. I want to call the program in the bash shell and pass that regular expression as a command line argument to the program(there are also other command line arguments). A typical regular expression looks like "[abc]_[x|y]".Unfortunately the characters [, ], and | are special characters in bash. Thus, calling "program [abc]_[x|y] anotheragument" doesn't work. Is there a way to pass the expression by using some sort of escape characters or quotation marks etc.?
(Calling program "[abc]_[x|y] anotheragument" isn't working either, because it interprets the two arguments as one.)
I've written myself a linux program "program" that does something with a regular expression. I want to call the program in the bash shell and pass that regular expression as a command line argument to the program (there are also other command line arguments). A typical regular expression looks like "[abc]_[x|y]". Unfortunately the characters [, ], and | are special characters in bash. Thus, calling "program [abc]_[x|y] anotheragument" doesn't work. Is there a way to pass the expression by using some sort of escape characters or quotation marks etc.? (Calling program "[abc]_[x|y] anotheragument" isn't working either, because it interprets the two arguments as one.)
View 8 Replies View RelatedWriting script to create backup of file by adding datetime to file name. Basically test for file presence if there, cp with datetime then rm original cp works fine from command line but get cannot stat `full path to file': No such file or directory
Code:
Here are the errors: cp: cannot stat `~/html/CVP_dadamail/.dada_files/.logs/errors.txt': No such file or directory rm: cannot remove `...': No such file or directory
The for statement is a placeholder as I have same file to backup out of several directories. using "bash -x scriptname" -OR- inserting echos, I can see I've constructed the strings properly. Believing it might be related to the hidden directories, I tried setting the shopt "glob" options to no avail.
Ultimately I'll add the other directories to the for loop and then run this from a cron job, so if you see potential pitfalls knowing I'm headed in that direction...believe construct would be
Code:
i was wondering if someone could help me figure out a script for global variables i'm trying to set for a group of command line arguments:
basically i'm trying to set: if $# = 3 then i want to search for each all string $1 $2 $3
if $# = 4
then i want to search for each all string $1 $2 $3 $4
I want to know how to get eg. the contents of a form on a webpage which has been passed to a server side PHP script, inside for example an array which I can read. I've been reading a ebook on PHP which as far as I can see doesn't cover this inside it.
View 1 Replies View Relatedhow to pass an array as a command line argument in a shell script?
View 5 Replies View RelatedI am having trouble trying to get the kernel to accept some command line arguments for parport_pc during bootup. I have a custom base board with a PC-104 CPU board connected to it through the ISA bus. On the base board I have 3 parallel ports mapped to addresses, 0x150, 0x158, and 0x160. Only the first one needs interrupts, the second two do not. So, on bootup I load the parport_pc module like this modprobe parport_pc io=0x150,0x158,0x160 irq=3,none,none I have been running an older RedHat kernel, 2.6.11 for the past few years and this has been working flawlessly. I had the above modprobe call in /etc/rc.d/rc.local.
Now I am trying to set the system up to use CentOS 5.5, kernel 2.6.18-194.el5. What happens is, the module inserts OK, but the system never recognizes the ports. (i.e, they do not show up in /proc/ioports)
But, if I log into the system, then rmmod parport_pc, then re-modprobe it as above, it works just fine and now my ports are visible. This is an embedded system, expected to just come up and run, so kicking it into action by hand is not an option.
I have tried putting a parport_pc.modules file in /etc/sysconfig/modules so that it will be seen by rc.sysinit, (some site I found while googling said modprobes need to be done earlier than in rc.local),and again, the module gets inserted but the ports are not seen. I have also tried putting rediculously long pauses between each step of the modprobing of the parport stuff;
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how to use QGLviewer. I want to give my program a file name as a command line argument. All of the sample programs I find have a main.cpp file like this:
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#include <QApplication>
#include "window.h"
int main(int argc, char *argv[])
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Then the Window class, which is derived from QGLViewer, does all the program's actual work. If I want access to argc and argv, for example, to open and read a file that's passed as an argument, what would handle that? Is there a built-in way to get the arg variables to the window class, or do I need to just write a loadfile function and pass them?
I have recently installed MySQL Server on my CentOS box.
CentOS 5 MySQL 5.0.45 (installed using 'yum install mysql-server') I can start the daemon without error by issueing the following command: service mysqld start
The problem is that I want to use a number of the command line options available to mysqld, such as --verbose and When I issue '/etc/init.d/mysqld --verbose --help' I get the following output:
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Has anyone used rtmpdump or flvstreamer? They compile well (there is also a package on Packman for rtmpdump, but not for the latest version) and have man pages listing a bunch of command line arguments, but I have not yet figured out how to use them in connection with browser and flash plugin.
View 1 Replies View RelatedI am able to start up firefox just fine out of my terminal, but i have not been able to find any list of arguments that can be added in the command line. what i'm looking for is that it starts up in Full Screen mode right off. is there an argument that can be added to ti to do that?
View 2 Replies View Relatedhow to run a shell script taking command line arguments in a jsp page.
View 1 Replies View RelatedHow can i write a shell script that takes a file path as command-line arguments.and it should report whether the path denotes a file or a directory.
View 2 Replies View RelatedWrite a script that will take a list of filenames as arguments and output a count of how many of them are regular files, and how many of them are scripts (if the file is executable, it will be assumed to be a script file)
Counts always come back as 0
I'm trying to create an SSL certificate and answer the questions inside a bash script. The command used to create the SSL certificate
Code: openssl req $@ -new -x509 -days 365 -nodes -out /etc/apache2/apache.pem -keyout /etc/apache2/apache.pem
The first question asked is. Country Name (2 letter code) [AU]:
I know that using alias I can run a whole command with a shortcut. But my requirement is to use parts of a long command and in between I have to pass some user defined values.
E.g. Suppose I have to routinely copy a directory to another remote directory on a remote machine.The remote machine name is quite long as well as the directory path to which I want to copy the files into.So the command to do scp would look like this[URL]Now I want to do some sort of aliasing (say "ecp") so that I just need to pass the source_directory name and the ecp command and do my job
Is there a way to retrieve the arguments in one big string, rather than split into a "char*[]" in C/C++?
It would be nice to get this: "appname --option=value argument argument", rather than "appname", "--option=value", "argument", "argument", etc...
Simply concocting the strings together will not do, since I would like to get the arguments before any OS interaction (i.e.,
Code:
appname --option="hello"
translates into
Code:
appname --option=hello
(quotes are lost). Here is the output of just such a problem:
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The code:
Quote:
Problem: I need a method to maintain the $i variable. In fact, actually, this variable get lost when executed. I think that an escape can preserve this variable and permit its execution inside the function, but I've no idea about.
I am looking for a way to delete the currently entered commandline without wasting seconds on the "Backspace"-key.
For example I scrolled the bash history and have a long commandline that would execute when I pressed ENTER:
~$ aptitude search openssl | grep dev
But now I decide that I do not want to execute this command. Can I get an empty prompt fast without deleting the whole line with Backspace? On the Windows "cmd" you can just press ESCAPE and it is gone. This behavior would be what I want.
The question may seem trivial but this is bothering me for a long time now.
Bash 3.1.7
Suppose this bash script:
Code:
#!/bin/bash
ls foo
I would like the output to be
Code:
ls foo
foo
That is, the command is first echoed then executed. Is it possible to do this? Or is the only way to debug the script?
I'm writing a Bash script to take IPTC keywords from a text file and write them, via Exiv2, to several (first batch is 100) JPEG files in a single directory. The script has one while loop inside another while loop, both terminated, but I'm pretty sure that's not my problem. I think it's how I'm incrementing the "counter" variable, although it could also be the method of parsing the text lines from the file (using cut with delimiters that have worked fine in simpler scripts).
Here's the code as I've worked it up to this point.
Code:
And yes, "keywords" checks out in Crimson Editor, Emacs GUI and nano as an ASCII file with UNIX line endings. No issues on that score.
Feeding each line consecutively into a terminal (excepting the exiv2 command) works fine: each variable echoes with the part of the text line used as a variable value as it should, even when the b variable is incremented the quick&dirty way (up arrow three commands and hit enter).
Running the above script in eval mode (sh -x) stalls after setting the b variable to one and reading in the first line of text. I'd like to know why. I'd also like some advice on another reliable method of parsing the read-in lines.
I am implementing a strategy to organize my data among the several machines I work with and thought that getting some ISO images out of it could be a good idea because that way data would be 'read only' thus allowing for easier synchronization.
At first I thought of using the "dd" command to create the ISO out of a directory, but it fails code...
So, I have two questions:
Is the ISO 'format' capable of storing complex directory structures with long filenames (pretty much as any Linux filesystem does), or are there some inherent limitations?
Supposing the ISO format is not constrained, which command would allow me to create an ISO file out of a directory?
I'm developing in java.
I want to create a GUI interface for some command line commands (drush - drupal).
How can I interact with the command line commands with java? or any other languege?
How can I create multipart rar file in Linux using the official console rar client?RAR 3.90 Copyright (c) 1993-2009 Alexander Roshal 16 Aug 2009Shareware version Type RAR -? for helpI want a multipart rar with each part size being 150 MB.
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How can I create a multipart tar file in Linux?
Is there a way to create a windowed message from the command line? Like an alert?
View 3 Replies View RelatedI want to create database from script directly by taking inputs USER, PASSWORD and DBNAME.code...
How to resolve this or any alternate method (other than entering into mysql prompt like mysql -u USER -pPASSWORD)?
i have a server running on centos5, i have run vsftp and samba, and i need create a user through command line and set your default directory, i can do this through graphic interface, but i need do throug line command.
View 12 Replies View RelatedI use putty to get to my RHEL 5.3 workstation from my Windows laptop.
Typically, if I want a new terminal on my windows 7 workstation from another terminal or mc, I have to type start and I will see a new terminal window running the default shell.
QUESTION : What is the equivalent command in RHEL 5.3 (and or solaris) to create a new terminal window from the command line ? I will be entering this command from the shell prompt or mc's command line.
In Windows, if I want to start another terminal and in that terminal, I want to run a program, I can do "start program.exe arg1 arg2". this will create a new terminal window and runs program.exe in that terminal window. I don't have to create a terminal and then in a separate step run the program. How can I do this in Linux ?