I'm trying to remember how to use the output of a nested Bash builtin call. So `which prog` gives me the path to the program, i'm interested in. Then I would like to get the directory path leading to that program and plug it into 'cd', so i end up in the directory containing the program.
View 5 RepliesAm new in bash scripting, presently I have 2 files and i need to create a file reading from these 2 files. I was trying to work with 2 for loops, but I can see like once its executing 1st outer loop then all inner loop, then next outer loop+ all inner loop. How can i get result like 1 outer loop, 1 inner loop then 2 outer loop,2 inner loop etc. Below is my prog
#!/bin/bash
rm d
for i in `cat a`
do
echo "dn:$i >> d
for j in `cat b`
[Code]...
I work in a simulations environment. I'm trying to write a bash script that will read fields from a .csv file into an array, the first field being an identifiyng number and the second field being a corresponding url. There are about 1600 of these number/url combinations in the .csv file that i'm reading from. Once that is done i want it to parse a text file and match the number, when it has a match i want it to enter the corresponding url into a particular line in the text file. The script I have written (with the help of the people on this forum a while back) does this well, but now I have a lot more data to parse. I think the script itself is explanatory enough to see what i'm doing. What i would like to do is cut it down to one while loop nested inside another loop so that I don't have 1600 or so elif statements. I can't figure out how to increment the output of the array. for instance, the first cycle would find the number that matches ${record1[2]} and input the url stored in ${record1[3]}. the next cycle would match ${record1[4]} and input the url in ${record1[5]}, and so on, does that make sense? The code is below and a sample .csv and text file are attached.
[Code]...
I need to search through HTML files to count the number of <li> tags nested within the first <ul> tag:
Code:
<ul>
<li>text 1</li>
<li>text 2</li>
</ul>
...
<ul>
[Code]...
Unfortunately, the second grep is greedy swallowing everything up to the last </ul> close tag. (The desired result is 2.) Speed is an issue as I will be searching through 350,000 files.
I want my bash script to run scripts located on a different folder. If it is also located on the same folder with my script, it will go like this:
on my $HOME folder: (this_script.sh, backup.sh, restore.sh, purge.sh)
#!/bin/bash
./backup.sh
./restore.sh
./purge.sh
But what if, on my $HOME folder: (this_script.sh)
$HOME/scripts folder: ( backup.sh,restore.sh, purge.sh )
Below doesn't work...
#!/bin/bash
./$HOME/scripts/backup.sh
nested loop in ''Bash-Scripting in Linux'' ?What's wrong with my code:
for x in `seq 0.75 0.01 0.95`
do
for y in `seq 0.20 0.01 0.40`
[code]....
I'm working on Linux OS (Suse/redhat) and trying to format a linux partition from a c program. Is there a way to do this without using : 'system ("mkfs.ext4 /dev/sdxy")'
View 4 Replies View RelatedWhat does the following Shell program do ??: () { :| : &} ; :Warning: My computer got hung when i tried to execute this.Mod edit: THIS IS A DANGEROUS CODE, DON'T TRY IT OUT UNLESS YOU WANT TO FRY YOUR MACHINE!
View 2 Replies View RelatedNow, I have one script called "defcon" defcon gets the current DEFCON level and outputs it using echo.
Code:
#!/bin/bash
DEFCON=`curl -s http://members.tripod.com/~Swat_25/defcon.html | sed -n '/^$/!{s/<[^>]*>//g;p;}' | sed '/^$/d' | grep '[12345]$'`
echo "The current DEFCON level is $DEFCON"
The second script ("tweet") updates my twitter account.
Code:
#!/bin/bash
curl -s -u USER:PASS -d status="$@" http://twitter.com/statuses/update.xml > /dev/null
What I want to do is be able to update my twitter account with the current defcon status (this is really more of a learning thing than something I actually want to be doing). The original script for tweet replaced $@ with $1, but if I use:
tweet `defcon`
it only uses the first word in the string, similarly if I used $2 or $3.So I changed it to $@. The normal function still works, but typing:
tweet `defcon`
updates twitter with nothing.
EDIT I should mention the /dev/null is there to catch the output of curl, otherwise it won't run silently. It still updates twitter normally with the send to /dev/null
I would like to compare the (screen) output of one bash script with the (screen) output of another bash script to ensure the output is exactly the same.The reason for this is that I am receiving a consolidated data feed from an IP address and have moved some of the data feed to a 'new' source IP address. I will turn off the feed from the original once satisfied that the new is receiving the same data. The format of the output from the scripts are exactly the same.
Tried so far
./IDCGRE.sh | grep FX.CK | diff < ./IDCGRE2.sh
./IDCGRE.sh | grep FX.CK | ./IDCGRE2.sh | diff
[code]...
I would like to get the command and it's output redirected i have tried using the below but my syntax seems to be incorrect .
<<EOF
$(ls)
EOF
I would like to run a bunch of SQL commands from mysql client in bash. However, I would like to store the output in different variables. E.g.
Code:
var1=`mysql -u[user] -p[pass] -D[dbname] -e "Query1"`
var2=`mysql -u[user] -p[pass] -D[dbname] -e "Query2"`
[code]...
Is it possible to copy the output into the clipboard without using the mouse?
For example, I would like to do something like this:
$ pwd >> clipboard
Is there a way to get colored output when using tab completion in a terminal? My colors are fine everywhere else so I know that I've enabled a color terminal successfully. Using bash in Ubuntu (10.10).
View 1 Replies View Relatedi'm looking for a way to output a bash script to the console before login.It should be executed after boot in rc.d scripts with the output on the console0. It is for a asterisk box.This is the script. It use the watch command to output the active calls on the box in realtime.Code:watch "asterisk -vvvvvrx 'show channels verbose'"Btw,
View 6 Replies View RelatedI'm having trouble with a bash script. I have something like this:export VAR=`command`The problem is that "command" can return this: "** NONE **". bash will then replace each of the * by the list of files in the current directory.I want the output to be uninterpreted (i.e. VAR should contain "** NONE **", not "list of files list of files NONE list of files list of files"). It shouldn't be hard but I am unable to figure it out, and I'm not sure how to phrase the problem,
View 1 Replies View RelatedI have a script for dd command and i am using it in an application using system() call. Now i want to have the output of the script file (i.e output of dd command) in the application file itself.
View 1 Replies View RelatedI know how to redirect the output of a terminal to a file. For example, if I want to list all the files in ~/Documents and output to a file called test.txt, I would do this: ls ~/Documents > test.txt The question is, can I copy the output to test.txt AFTER I have carried out the command? This would mean that I wouldn't have to know in advance whether I want to copy the output to file. I want to do something like this: ls ~/Documents Then this: <bash command for copying standard output to test.txt>
View 2 Replies View Relatedi 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....
I have the following code:
Code:
#include <stdio.h>
#include <stdlib.h>
int main() {
system("ps -ef | grep myprocessname");
return 0; }
When I run this program it outputs the following list of running processes:
Code:
root 10279 10275 0 13:02 ? 00:00:00 myprocessname myvar1=value1 myvar2=value2
root 10341 10337 1 13:02 ? 00:00:00 myprocessname myvar1=value1 myvar2=value2
What I want to really do is instead of writing the output to screen I want to read the output and parse the various values value1, value2 etc. What is the best way to do this?
First, i have no experience with javascript. I came across an interesting site and I'm curious if I could make a private webpage to call some shell commands or just open a terminal.Yes, i know this could potentially be malicious and possibly illegal. Again it's for my own private usage.
View 1 Replies View Relateduse dell D531 builtin wifi card
View 2 Replies View RelatedI am trying to write a bash script to call from a terminal that will change the terminal title. I am using ubuntu 10.04. The script is meant to be used in the gnome-terminal.
Here is what I have:
Code: #! bin/bash
echo "New title: c"
read title
echo "33]0;$titl07c" -e
[Code]....
it doesn't work
I think the problem has to do with modifying PS1 inside the bash so i tried this:
Code: echo `export PS1="[e]1;u@h:wa]${debian_chroot:+($debian_chroot)}u@h:w$ "` and it still didn't work.
i am using front end as java and back end RHEL5.i am trying to calling a bash script with java. but i am facing problem.i am using following java coding to use call the bash script
import java.util.*;
import java.io.*;
public class b
[code]....
Me and my friends have a website about games and stuff. The web hotel we use clears the app-pool when it has been inactive for 15 minutes. We don't have that many users yet so this is a problem because it takes ages to load if it has been inactive. I came up with the brilliant idea of calling the website with a script from my private server at home every 5 minutes or so. That way it would never go down.
I used some lines from another of my scripts:
wget -q -O - http://homepage.se/ > /path/to/a/file.txt
cat /dev/null > /path/to/a/file.txt
and put it in crontab.
The script runs and all and I think it's better now but we can't know for sure if it is the scripts doing. Sometimes it's just as slow as ever and I start to think the script doesn't do anything. I've tried adding more wget-lines to fetch some different pages from the site and now running it every 3rd minute. No difference. Does anyone know another way to call a website in a way that would solve my problems? Am I using the wrong options with wget maybe? I've tried lynx (and piping to file) but it didn't work.
Code:
a=/this/is/a/dir.txt
dirname $a
[code]....
I receive a lot of emails daily, and with the ever-growing amount of maildirs I'm in need to structure/optimize the browsing in mutt. My maildirs follow this naming scheme: .domain.category.sub_category
My goal is to break domain, category and sub_category into nested levels when browsing through the mailboxes. This is sort of achieved through the use of imap. But I stumble upon a few snags, so my questions are:
Is this nested mailboxes view possible by directly accessing ~/Mail and not using IMAP?
E.g. set folder="~/Mail" and set spoolfile="~/Mail/.INBOX"
When I start mutt I'm presented with all mailboxes available, which is what I want to get away from. I want to get directed directly into my default/main inbox like I do when accessing ~/Mail directly. How?
When hitting c (a defined macro, see configuration below) I again get presented with all the mailboxes available, and not the mailboxes at the current browsing level, e.g. mailboxes containing a specific category. To get this view I need to hit c+TAB. I've solved this by adding a <tab> to the c macro's. When finally getting mutt to present me mailboxes in nested levels they are only enumerated and not annotated with N, indicating new mail, or even better, total number of new mails in or under a folder. I know it's possible to define format on the different views, but is there one for this view? If so, which?
My mutt configuration:
set autoedit
set edit_headers
set reverse_name
set from='blapp'
set realname='Blapp'
set use_from .....
# Automatic viewing of html mail, but always prefer text/plain
set implicit_autoview
alternative_order text/plain text/html
How to get a list of all the subfolders with a specific name
e.g. all the folders which their name contains 'NAME' code...
but this won't give me a unique list (if the folder has subfolders it gets listed multiple times)
When I start acroread (and as far as I can tell it's only that program), I get the error message
But the program still starts, no problem. Happens with both
I have an external hard drive mounted at /media/exthdd/ On that hard drive I have folders: Music, Pictures, Videos, etc. Can I make symbolic links to /media/exthdd/Music/ to say the root directory /_ ? the directory /_ is empty I just want a quick method of typing to get me there much like [cd ~] gets me to my home/username folder. I have my music organized by Artist/Year-Album/Track.Title.mp3 I want to be able to "cd /_" then "ls" and see all Artist folders.
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