bash script:
Code:
$ bash --version
bash --version
GNU bash, version 3.1.17(2)-release (i486-slackware-linux-gnu)
Copyright (C) 2005 Free Software Foundation, Inc.
Code:
[serv:]$ cat test.sh
#!/bin/bash
[Code]...
The question is, how to config it works through 'function cool {}' or cool() {} with position parameter
I've searched online and found many examples using getopts, but nothing that clearly explains it use, nor any examples of what I'm trying to do. I have a script named "process". It can take from 0 to 3 different options. I'd like to be able to handle these options regardless of the order that they are entered.
Syntax:
process [-v] [-d #] [-h|-?] [string]
-v = verbose mode on
-d # = how deep to do the process, expecting a number parameter
-h or -? = show command usage
string = only process lines containing the specified string
[Code]..
Is there a way to process individual characters one-by-one from a text file in Bash, or is that hoping for a little too much from this lovable old clunker?
View 13 Replies View RelatedI have a bash variable where the content looks like this where ;f1; and ;f2; are delimiters:
;f1;field1value1;f2;field2 value1 ;f1;field1value2;f2;field2 value2 ;f1;field1value3;f2;field2 value3
So what I need is to extract and put into variables each combination of f1 and f2 in a loop to something like that:
#first pass of the loop I need:
f1=field1value1
f2=field2 value1
#second pass of the loop I need:
f1=field1value2
f2=field2 value2
# third pass of the loop I need:
f1=field1value3
f2=field2 value3
PI'm trying to write a script to list all open ports in the MINIUNPND chain in iptables and use the procotol, port and destination ip to open ports on another router using upnpc.Here is the output of iptables -L MINIUPNPD
Code:
>iptables -L MINIUPNPD
Chain MINIUPNPD (1 references)
target prot opt source destination
ACCEPT tcp -- anywhere 192.168.3.124 tcp dpt:19955
ACCEPT tcp -- anywhere 192.168.3.124 tcp dpt:20054
ACCEPT tcp -- anywhere 192.168.3.130 udp dpt:10654
ACCEPT tcp -- anywhere 192.168.3.121 tcp dpt:29955
code....
No matter what i do i cant seem to remove the first 4 characters from the MYPROT array to leave only the digits. Also i cant seem to read the array back???
I thought it would simply be a loop reading each line and passing the fields in variables, executing upnpc commands i need then moving to the next line of the file until it reached the EOF.
I'm trying to make another file annotation script a little speedier than it has been by the up-until-now proven method of checking the last four characters in a filename before the "dot" (eg .jpg, .psd) against a list of known IPTC categories and Exiv2 command files. It occurred to me that if one script generated a list of files in directory foo, and the same or another script sorted that list by that four-letter tag,then that list could be used(instead of a for/do/done loop on the real files in the folder) by the command-file-matching script to "vomit out" which annotator file would go with file nastynewfile.jpg, f'r'instance. The script I had been using for this task looks like this:
Code:
while read 'line';
do
sp=$(echo $line)
vc=$(echo $sp | cut -d"," -f1)
cv=$(echo $sp | cut -d"," -f2)
[code]....
Where I seem to be stuck is with how to sort the lines in templist, which may be any number of different lengths, from back to front. sort -k looked promising, except it seems only to work the other way round. I thought of invoking a
Code:
q=$(expr length $line); echo $q
n=$[q-8]; echo $n
kind of thing, but that presented the problems of how to sort by those, how to tell sort where to find them (grep?) and how to "stitch them back in" to the original list, which is what I want to sort in the first place.
I want to create a variable that when passed as a parameter to another bash script will keep its string quotes (so it stays as one parameter). What ways can I achieve this cleanly?
Code:
john@ubuntu:/usr/local/src$ cat foo.sh
#!/bin/bash
echo $0
[code]....
fakeFile's contents :
Code:
blah $(date +%F) blah
fakeScript's contents :
Code:
while read line; do
echo $line
done < "fakeFile"
so here's the problem : is there any way to evaluate the fakeFile's contents (in the fakeScript), so that the term "$(date +%F)" (or any other bash script) in a string , translates to it's corresponding value ? (in this example , we want to have "blah current date" instead of " blah $(bash script) blah " )
We have a system called Skynet, which is basically a bunch of monitoring tools, including Nagios. What I want to do is output the status of 'critical' processes in conky. The conky part I'll worry about later (how hard can that be?), but I'm looking for some feedback on how I'm parsing the initial data. I figure that the simplest way to get the information is to query the cgi, then take what I need from the results...
Code:
wget -O - "http://user:pass@skynet/nagios/cgi-bin/status.cgi?status.cgi?host=all&servicestatustypes=16&hoststatustypes=3"| grep -i "<TD ALIGN=LEFT valign=center CLASS='statusBGCRITICAL'><A HREF='extinfo.cgi?type=2&host="
[Code]...
All I basically want is the server name and the process name, the above example giving server0/server1 and 'update status' as the service. How would you go about extracting merely these two pieces of information, bearing in mind that the server name and process are variable?
as a result of a find command, i have
852065 72: /bin/gunzip
852065 72: /bin/gzip
852065 72: /bin/zcat
(the first column is inode number and the second is size if you're curious)
I want to be able to format it in a way such that:
852065 72:
/bin/gunzip
/bin/gzip
/bin/zcat
I know I can get the bottom half using awk- but I can't figure out how to extract the first set of numbers and get them to appear only once
i am trying to get a script that i'm calling to have information from a sql populate into rows... but i'm not getting the data to output correctly into the rows. can someone please help?
<table>
<thead>
<tr>
<th>Name</th>
<th>Help</th>
<th>Folder</th>
code....
(variable substitution?)
(parameter expansion?)
Code:
run_repeatedly()
{
NUM=0
while [ <irrelevant stuff here> ]
[Code]....
run_repeatedly "programX -o "./messy/path/output-$NUM.txt"" The echo inside the loop prints "...-$NUM.txt"; obviously I'm aiming to have bash substitute the iteration number so that I end up with many output files not 1.
I'm at the bottom of the bash learning curve, looking up, hoping someone can toss me a line. I need to update tracker on my system but this will erase the metatag database I've been building up over the course of months for the purpose of indexing a news archive. So the solution seems to be, 1) save the output of tracker-tag to a text file for all relevant files within a directory, 2) upgrade tracker (since the version in the Ubuntu repositories is very much out of date) and then 3) use a script to parse the text file and pass appropriate arguments back to tracker-tag to rebuild the database. It sounds as though it ought to be simple enough, but I need a push in the right direction, which hopefully will not be off the cliff. Before I confuse my metaphors any further, here's what the text file looks like.
[Code]....
I got the following modprobe scripts modprobe -k -q streams what does the -k parameter mean?. is it exist in older modprobe? I don't see -k parameter in recent modprobe.
View 1 Replies View RelatedIf I have the following links in HTML
Code:
<a href=lang.php?lang=cymraeg>Cymraeg</a>
<a href=lang.php?lang=english>English</a>
and lang.php has a link to page2.html, how do I pass on the value of the lang parameter from lang.php to page2.html? The value needed is the one passed in to lang.php.
I have logs files from freeradius that have looks as follows:
$ grep "Login incorrect (rlm_ldap: User not found" /var/log/radius/radiusd-inner-tunnel-20090831.log
Mon Aug 31 09:25:27 2009 : Auth: Login incorrect (rlm_ldap: User not found): [John Doe] (from client oficina port 0 via TLS tunnel)
[code]....
I use the following line to get the amount of users that don't exist on ldap:
Code:
grep "Login incorrect (rlm_ldap: User not found" /var/log/radius/radiusd-inner-tunnel-20090831.log | awk '{print $14}' | sort -fu | wc -l
Now, awk on line one for example parses [John Doe] and [Joon Williams] as "[John" and that it's not what I'd want. I mean how could I do for awk looks username field as closed between squared brackets?
I am trying to check if the 9th character in a file on each line is a v and if so, then print the first word. I've tried a number of variations and am stuck !If it's possible to also check if character position 1 begins with a s in the same awk, that would make it cleaner instead of using egrep.
egrep '^s' file | nawk '{virtual=substr($0,9,1); if ($virtual=="v") {printf "%s", $1}}'
nawk: illegal field $(e)
input record number 1
source line number 1
i need to overwrite each line of the file starting from a specific position to the end of the line
example:
ATOM 981 N PRO B 159 55.662 7 1 1.47 0.75
i need to write " 1.00 0.00 " starting from 20position
i tried
sed -i 's/^(.{20})*/ 1.00 0.00 ' filename
but it doesnt work :"(
I have a small board that has a static ram board attached to it. I have two different programs that each write to a byte of memory in the static ram board. I get a file descriptor to the device memory with the following code:
int phymemfd;
phymemfd=open("dev/mem, O_RDWR | O_SYNC);
This opens the physical memory for both reading and writing. Next I get a pointer to the beginning of my ram board.
volatile unsigned char *novram;
novram = (unsigned char *) mmap(0, getpagesize() * 31,
PROT_READ|PROT_WRITE, MAP_SHARED, phymemfd, 0x11AA0000);
I do this same code in two processes that are both running and this works fine. Now, if I take out the O_SYNC parameter, one of the programs gets into some sort of weird state.My understanding of the O_SYNC parameter is that it cause the process accessing the memory location to block, not allow another process to run, until the first process has finished writing to it.I can see that if my program doesn't block, I wouldn't really know what was in the memory location, but would I can't see how it would cause any other type of system problem.
Is there a Linux system call that can be used to get the group name from the GID returned by stat()? I realize that I could parse /etc/groups (if my user had sufficient permissions).
View 3 Replies View RelatedI've been loosely following this:http://norvig.com/lispy.htmlAnd I have a problem: the parsing function throws an array out of bounds exception. I thought that maybe I'm doing it wrong, so I copy and pasted the code from the page, and still the same error
View 2 Replies View Relatedi wanted to know how can I pars a xml file (read data from xml file) and from C program.is there any function to do this for me in C.
View 1 Replies View RelatedI'll show the code first:
Code:
What I am after is to get the string text from the clip tags. But for now I just tested to see if it can finds the command tags and print something if it does. But it doesn't find it. Anyone knows why ?
Looks like the xml is not good, i test it with a xml validator:
Code:
I have a log file (test.log) starting & ending within dash (--) as below. I am looking to write a parser for test.log. This test.log file currently has single value for one Job ID but I wish to parse for repeated N values of different Job ID - Job, User, Queue, Dispatched Date, Dispatched Time, Completed Date, Completed Time, Hosts/Processor, CPU_T and TURNAROUND. I can either output this 10 values in another .log file or dump into cgi.
The selected parameters from test.log for parsing with above 10 attributes are -
--
Job <345010>
User <xyz>
Queue <gaussian>
[code]....
I have a set of files containing DNA or amino acid sequences from various organisms:
Code:
>14432|LGIG|186221
--MISVLAMA-NRITAAEKR
>14432|CAP1|21057
MVRVNVLADALKSI-TAEKR
>14432|HROB|156827
--RMNVLADALXSIC?AEKR
>14432|NVEC|159589
-VRVNVLN-ALNSICNAEX-
[Code]...
Can anyone help me get the position of the first and last non-missing data characters (while allowing missing data characters in the middle of the sequence)? I'm sure it is a simple sed or awk command but I can't figure it out. I think I can produce the output file I want once I have figured those commands out.
My ultimate goal is to write a script that can make composite sequences from two or more non-overlapping sequences (e.g., the two sequences from NEOM). I may also want to merge sequences that partially overlap (e.g., those from TEST) but that would complicate things. Is this a logical first step for such a script or would you do it differently?
Say, i have an imaginary std library function, which I want to call.
Code:
void std_lib_func(ObjectType *param);
Now in my c++ program, I have a main() function, and I will like to call a customized function (which will in turn call the std lib function) from the main function, as below:
Code:
int main()
{
ObjectType *aobj;
customized_func(aobj);
}
[Code]...
I tried the below but get an error that the std lib function is expecting a ObjectType* param, not aobj. How should I work this out.
Code:
void customized_func(ObjectType aobj)
I have the following HTML code in main.html:
Quote:
.............
.............
<tr align="right">
<td width="50%">
[Code].....
I'd like capture with capture_profile() function in createproject.html a value into main.html page. How can I solve this problem with javascript?
I am trying following script can I do this or is there a way to do find and replace the replacing word is dynamic input by user
echo -n "Enter name:"
read RP_USER
sed 's/text1/$RP_USER/' /home/user/file1 > /home/user/file2
I want to send my data from my custom board to the computer.I write two codes for each device.I use Linux PF_PACKET socket, I can successfully send my packets and I can capture them by ethereal too.But I cant receive them by my own code. My code can receive other packets but not mine!Here is the code I used to receive packets. Where is the problem?what parameter should I use for �destAddr.sll_pkttype� and �sockopt.mr_type�?
=================================================================
struct sockaddr_ll destAddr;
struct packet_mreq sockopt;
struct ifreq f;[code].....
How can I pass by reference, a parameter, without assigning a new object? In my first example, var = "changed" creates a new local object. In the second, mylist.append will affect the reference target. How to i achieve the same effect with example 1?
Code:
#!/bin/python
var = "unchanged"
def print_string( var ):
[Code].....
