Substitution in a file dont work with an Array in filename
Hi.
I´ve a script that should substitude the 8th line in a file called xxx.num6.
The "xxx" is set by an array filled with this command:
Now i try to implement the substitution with:
So the substitution works, if i set the Name of the file (e.g. abc.num6) instead of the parameter.
But if I type in "echo ${Par2[$j]}.num6" , the output of the variable is the correct Name. (e.g. abc.num6)
So i think the problem hides into the Syntax of the parameter "${Par2[$j]}.num6" ???
Alright.
My neighbor kid brings me his iBook and says nothing works. He decided to move the file system to his likeness and that semed to create the problems. Now he doesn't have access rights to his home.
I have run fsck over and over again and I keep getting ** fs modified **
I have also... (0 Replies)
I am using an array (clmlist01). I have 61 of these and have 4 or more references to each one in a block of code that I do not want to have to hardcode. With that being said, I am creating a varible and going through a for loop to create the actually name of each array. The arrays would end up... (3 Replies)
Hi
I tried to put a cron job which pipes the logfile appended to date +%d
but it didnt work .
anyone know how to make this happen
thanks in advance
-prasad (7 Replies)
Hallo,
I need to test a String (a special ip number-string).
So I want to run that:
ipadress=172.0.0.0
# for debugging:
echo $ipadress | egrep -e '172\.?\.??\.??$'
# the test that doesnt work
if test -z `echo $ipadress | egrep -e '172\.?\.??\.??$'` != ""
then
echo "match"
else... (1 Reply)
when i started booting linux ,after sometime both the mouse and the keyboard are getting freeze and wont respond(also the system gets hanged and all the process running dont go forward) ,nothing seem to work.
Keeping in mind that it will work after sometime ,i waited for one hour also ,but... (1 Reply)
Hi:
there is a shell script, with the name "foo", located in a bin directory. in the same time, there is an alias "foo='/path/bin/foo' ", just for convenience.
in my home directory, there is a different script with name "foo" too. (a modified version.)
while in my home directory, when I... (3 Replies)
Hey so I've written a program and it crashes every time I run it. I tried placing breakpoints to see what was going but to my surprise they do not work! I've placed them anywhere and they do not stop the execution of the program.
In fact if I add code and hit rebuild it doesn't even build that... (1 Reply)
Hi folks,
A really dumb question as I've wasted far too long trying to get this to work.... (on RH bash)
I have an array:
m0='<hello>'
m0='<there>'
m0='<fred>'
v0='<goodbye>'
v0='<again>'
v0='<john>'
in my code I calculate the value of the variable to output and if I echo it, I... (2 Replies)
hi all,
i have made a shell script and it runs until it reaches the if statement, doesn't the ! mean only if the command fails it will echo me that message and then exit
can anyone please help me what is wrong with my code?
many thanks,
rob
#!/bin/bash
echo "is this archive... (10 Replies)
Hello all,
I have following piece of code which is working fine if executed standalone -
date=$1
set -A max_month 0 31 28 31 30 31 30 31 31 30 31 30 31
eval $(echo $date|sed 's!\(....\)\(..\)\(..\)!year=\1;month=\2;day=\3!')
(( year4=year%4 ))
(( year100=year%100 ))
(( year400=year%400 ))... (7 Replies)
Discussion started by: ektubbe
7 Replies
LEARN ABOUT LINUX
config
config(5) Files config(5)NAME
config - Configuration file.
DESCRIPTION
A configuration file contains values for configuration parameters for the applications in the system. The erl command line argument -config
Name tells the system to use data in the system configuration file Name.config .
Configuration parameter values in the configuration file will override the values in the application resource files (see app(5) ). The val-
ues in the configuration file can be overridden by command line flags (see erl(1) ).
The value of a configuration parameter is retrieved by calling application:get_env/1,2 .
FILE SYNTAX
The configuration file should be called Name.config where Name is an arbitrary name.
The .config file contains one single Erlang term. The file has the following syntax:
[{Application1, [{Par11, Val11}, ..]},
..
{ApplicationN, [{ParN1, ValN1}, ..]}].
* Application = atom() is the name of the application.
* Par = atom() is the name of a configuration parameter.
* Val = term() is the value of a configuration parameter.
SYS.CONFIG
When starting Erlang in embedded mode, it is assumed that exactly one system configuration file is used, named sys.config . This file
should be located in $ROOT/releases/Vsn , where $ROOT is the Erlang/OTP root installation directory and Vsn is the release version.
Release handling relies on this assumption. When installing a new release version, the new sys.config is read and used to update the appli-
cation configurations.
This means that specifying another, or additional, .config files would lead to inconsistent update of application configurations. There-
fore, in Erlang 5.4/OTP R10B, the syntax of sys.config was extended to allow pointing out other .config files:
[{Application, [{Par, Val}]} | File].
* File = string() is the name of another .config file. The extension .config may be omitted. It is recommended to use absolute paths. A
relative path is relative the current working directory of the emulator.
When traversing the contents of sys.config and a filename is encountered, its contents are read and merged with the result so far. When an
application configuration tuple {Application, Env} is found, it is merged with the result so far. Merging means that new parameters are
added and existing parameter values overwritten. Example:
sys.config:
[{myapp,[{par1,val1},{par2,val2}]},
"/home/user/myconfig"].
myconfig.config:
[{myapp,[{par2,val3},{par3,val4}]}].
This will yield the following environment for myapp :
[{par1,val1},{par2,val3},{par3,val4}]
The behaviour if a file specified in sys.config does not exist or is erroneous in some other way, is backwards compatible. Starting the
runtime system will fail. Installing a new release version will not fail, but an error message is given and the erroneous file is ignored.
SEE ALSO app(5) , erl(1) , OTP Design Principles
Ericsson AB kernel 2.14.3 config(5)