Programming :: Creating A Text Based Menu Structure In Bash?
May 15, 2009
Is it possible to create a text based menu layout in bash were it is possible to browse through. The menu list should look something like this:
----------------------------------------
user: root
colour: blue
number: 4
animal: dog
----------------------------------------
At the start the cursor should blink at the r from root so that text can be entered. When pressing the enter the cursor should go to the b from blue and so on. the imported thing is that all the text is visible also beyond the position from the cursor.
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Nov 15, 2010
Options:A double linked list with fixed size character arrays. New nodes will be added when previous ones get filled. Dynamic arrays using realloc(). Linked list has the disadvantage of not having an O(1) search like an array but I think using realloc() will be more dangerous since it moves the whole block to a new location and if the new location is not big enough to hold the whole block, realloc fails !! this case will not occur with the linked list since its nodes are scattered.
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May 25, 2009
I am writting a program that reads a text file (music.txt) & stores it in a Data Structure. I am a novice learning over the internet so I this is something I have never done. How do I do this?
Quote:
Write a program that reads the data from the music.txt file and store it in a data structure. To implement this data structure you must use an array of songs and each song must be represented by a struct with appropriate fields. So far all I can do is open to file to read it (very simple I know) but so far is it correct?
Code:
#include <iostream>
#include <fstream>
#include <strstream>
[code]....
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Aug 11, 2011
I have a question regarding to the Graphical Splash Screen. Is their a way to show the text based startup on booting your OS? So. I don't the OpenSuse Background with the loading line. But i want the half transparent black background if possible or just the black background with all the loading texts. The black and white screen.
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Mar 20, 2009
I want to read an ftp site [URL]...and download the sub-directory structure and ONLY the tagfiles to the local directory.
FROM THIS:
Code:
slackware
+--a
| |aaa_base-12.2.0-noarch-1.tgz
| |aaa_base-12.2.0-noarch-1.tgz.asc
[code]....
I tried wget + grep but that didn't work too well.
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Aug 17, 2010
I can set my EDITOR variable in my .bashrc to e.g. gedit, which is a nice graphical editor on ubuntu. But when I log in over PuTTY that editor will fail.What is the best way to detect if I'm logged in and can run a graphical editor, or not, and set EDITOR appropriately?
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Feb 26, 2011
I just set up apache on my PC and I cant change the permissions by right clicking because "I'm not the owner" and instead of using the chmod command on every file that I would like to edit I would just like to write a script on a text file, save it to my desktop so all I have to do is double click on it and boom I can edit all my files, etc.
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May 2, 2010
i am on processing text tasks And i found that if you assign a text to a variable is chomp'ed automatically the newline
Code:
variable=$(cat file.txt)
The problem is i can only access the items/lines using:
Code:
for line in $variable
do
echo $line
# Other commands
done
how do i convert this to an indexed array. More importantly, how do i get access to individual $line[0], ..., $line[n] Another thing, if the file.txt, has lines with spaces it is a mess using the for...in..., but echoing prints line by line...o_0
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Jan 28, 2009
I have a text file called file1.txt containing many lines eg.
line1
line2
line3
line4
line5
line6
Then i have another text file called file2.txt contains
3
5
6
Is there a command to remove the lines in file1.txt based on the keywords in file2.txt? note: It should remove line3,line5,line6 based on 3,5,6
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Apr 4, 2010
i have a question in my mind.sorry if its irrelevant to this topic.Can i run bash script (which i currently run on cygwin) in linux based web hosting?
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Feb 2, 2011
list the used variables.
1. display menu until user quits the script
2. menu would give following options to
a. create backup
b. restore files from backup
c. quit
3. for option a or b user would be required to specify the files and name of the archive]
4. has option to be run with use of parameters if that is the case it will not display menu but carry out required task unless it was not possible to do
5. incase of any errors are encountered it would call external scrpit that would display custom disigned error message.
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May 10, 2010
I wrote a script for capturing port 5060 with tshark.Well, it's only a line, but I needed to send a positional var, and I couldn't do it with an alias. Now I need that script to run as a service, so I can start/stop. (Using CentOS)
Code:
#!/bin/bash
#
# capture service
[code]....
One more thing, my goal is to start/stop the service with
Code:
service myservice start|stop
Is that possible? I read that I must use chkconfig.
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May 7, 2011
looking to write a dependency map tree that creates a tree structure of object names . This tree will be written to a file and read back to create the tree structure of files . how to write this using bash ?
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May 3, 2011
I'm trying to call a specific variable based on a user selection. For example:
Code: Select a file:
[1] foo.tar
[2] bar.tar
Enter a selection: I have already coded each possible selection to have its own variable. If the user selects 2 I need to select $SELECTED_TAR2, or if they select 1 I need to select $SELECTED_TAR1 and then do something like this behind the scenes:
Code: cp /home/user/$SELECTED_TAR2 /home/user/backup/$SELECTED_TAR2
I was thinking something like this:
Code: echo "Enter a selection: "
read -e SELECTED_NUMBER
cp /home/user/$SELECTED_TAR$SELECTED_NUMBER /home/user/backup
[code]....
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Apr 12, 2010
I'm writing a bash shell script that among various other things will traverse through a directory with hundreds of files and rename those who match a pattern found in a config file. It's expected that only about one in ten files will actually match, and those who don't, will simply just be ignored for this purpose.
This should for instance cause the file "dBase program file December 1987.prg" to be renamed "Clipper source code December 1987.prg", and conversely "C++ source August 1996.cpp" to be renamed "C source code August 1996.cpp" etc.A sample file such as "Random Data File.dat" should not be renamed here since it's not mentioned in the config file..What is the quickest, most elegant way to do this in bash?I am thinking of using bash's built-in regex matching combined with the /bin/rename utility, but don't quite know how to get started to catch this..I guess there are plenty ways of doing this in perl and elsewhere as well, but since this has to integrate into a pre-existing bash script, that's what I'm looking for.Anyone out there with a spare moment to offer a hint in the right direction?
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Nov 23, 2010
I need a little help creating a ftp script that will take connection and file details from text files.For example:ftpscript.sh - script that looks for details and does transferftpparams.txt - ftp server connection details in single line csv formatftpfiles.txt - files that need to be transfer, one file per line.I have tried using awk with no success
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Sep 28, 2010
I have very little linux experience. And need some help with a bash script. I need to a script I can set cron to run to sort files out of a holding folder into final folders. It doesn't necessarily have to be bash, but I think it would be sufficient for this. File names are formatted as such when created: Dest-Date-Time-CID-Destination# I want the files to be moved from a all in one holding folder to a folder structure like this.
.../storage/year/month/day/Destination#/VarX(type)/hour/CID/'File'
I would need an if/else if/else statement to say if Dest = A set VarX = B If for example the file name was
infinity-20100927-17:00-1112223333-4445556666.wav
I would like the above file to end up moved from
.../holding
to
.../storage/2010/09/27/4445556666/Inbound/17/1112223333/infinity-20100927-17:00-1112223333-4445556666.wav
So the script will need to make directories based on information in the file name which is delimited by single dashes. Then move files from the holding folder to the newly created "sorted" folders.
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May 7, 2011
I am trying to create a custom service to manage a minecraft server what runs in a screen session (this is to allow easy console access as opposed to running it as a nohup background process). I am hitting two main issues with this script so far and wondering if anybody is able to shed some light on it, considering I am far from the greatest BASH scripter on Earth.
The issues are related to start and stop. the first issue with start is there is a command run "screen -dmS minecraft java -Xms1024M -Xmx1024M -jar /minecraft/minecraft.jar nogui" what doesn't appear to work, however when run from console (copy and pasted) this command seems to run perfectly. I am uncertain as to why this is not working within the script. Also if run from a script in /minecraft it also appears to work but in the minecraftd script I have created at /etc/init.d it does not work. I think the issue might be related to the location but am not certain on it, nor how to resolve it.
the second issue with stop is that it works sometimes but at other times it does not, overall it seems to work about 30~50% of the time. When it works it passes a couple of disconnection messages to the screen session and then gives the stop command (the command to gracefully terminate the minecraft server). It seems to work more often when using screen that I attach to the minecraft session while it is running but really not sure if this is an issue with my scripting or an issue with how I am passing things to screen.
The full code in /etc/init.d/minecraftd is below
Code:
#!/bin/bash
## Script Information
## Script Author: Berwick East
[code]....
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Jan 26, 2011
I have a command that outputs n lines of text, and I want to place each line into an array element, but I can't seem to get the syntax correct
So my command is this:
cat $configfile | sed -n '/cluster:'$clustername'/,/cluster/ p' | awk /host/
Which produces many lines depending on the value of $clustername. I'd like to get each line as elements of an array.
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Jul 22, 2010
does any one knows a linux based program/script that can generate html files based on directory structure?
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Feb 13, 2010
The output of following code is not like it's intended ...
Code:
This is the output:
Code:
Test prepending ...apple is a nice word, hour is a nice word, But of course what I want to do in the first set of commands is to prepend the word "an" to the words "apple" and "hour" in the for-loop.
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Nov 7, 2010
i have a table in a text file. How can i remove from that table for example "SLS= " if the value is empty? Is it possible to do it in bash awk or sed? [URL]
10.25 SLS=* G.V.=* BBU=122 G.V.=14
10.28 SLS=196 G.V.=198 BBU=* G.V.=*
10.08 U.T.=* I.M=--
10.15 U.T.=-0.522 I.M=*
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Nov 8, 2010
I need to Read a path of a file witch is written in Text file i used this
Code:
FILENAME=$1
while read line
do
echo $line
done < $FILENAME
it worked and showed me the Line witch was written in my file but now my problem is how am gonna use that line as a path i mean for example if am gonna execute a linux command on that file like dpkg -i /path/to/the/file how am gonna export it from The $Line variable and use it after the command.
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Sep 18, 2010
I have a file (called twitterstatus.tmp) that looks like this:
Code:
<status>
<id>24854489768</id>
<text>Are we gonna ride the sun home?</text>
<id>55266987</id>
[code].....
How could I feed this into an array, with each element containing everything between the <status> </status> tags?
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Apr 8, 2010
I've been trying to figure out a way to more easily color text in Perl like I do on Bash on a Linux box. In bash, what I'll do is set color variables up to equal the escape sequence, then echo out with escape seqeunces to print it exactly how I want it. Typically I'll want a character or a word in a different color, not the whole line. For example
echo -n -e "My face is turning ${RED}red${UNCOLOR} like a lobster." In Perl with the term::ANSIColor module, it seems to just do a line. Am I being dense? Is there a way that I can do it like I do it in BASH that's fairly easy to read after the fact?
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Apr 30, 2010
I have a text file which stores the list of files & dir, I want to get only file's extensions from this file & want to store it in another file.eg, below is the file's contents & from it I want to get the extensions sh, pl & h & want to store it in another file. Also I don't want directory list.
A scripts/services_restarter.sh
A scripts/svn post_commit scripts
A scripts/tmp/
[code]...
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Nov 26, 2010
I have a little problem about string in Snort alerting. I understood about Snort alerting saved in /var/log/snort/alert and Snort will add a new entry if there was a attack from anywhere. Then here's my problem. Because it has a lot of file on it, all I want to do is parse that string in snort alert then make into simply log files with it. I'm getting confused with Snort alert and parse that file.
Here's the simple algorithm; Snort get the alert <- parse the alert with my parameter which I've configured with bash (ip address, dest, kind of attack and time) <- then sent that parse alert into new text (let's called snortsent.txt) <- after ten alerts then clear the text then waiting again until the Snort alert go on -> back to snort alert. Here's the sample of my snort alert: (/var/log/snort/alert)
[Code]....
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Feb 15, 2011
At the moment I got my md5sum checking working which I write to a text file and see below.
If the md5sum works it will write the output to check2.md5 test.txt: OK
If the md5sum fails it will write test.txt: FAILED
How do I write if statement to check the output whether or not the md5sum failed or not ?
check1="/home/ops/Desktop/test1/check1.md5"
check2="/home/ops/Desktop/test1/check2.md5"
cd /home/ops/Desktop/test1
md5sum test.txt > $check1
[Code]....
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Apr 17, 2011
write such script (bash script). I have some text file with name filename.txt I must check if this file contains string "test-string-first", I must cut from this file string which follows string "keyword-string:" and till first white-space and save it to some variable.
For example. File: PHP Code: PHP Code:
Start 15022011 Eng 12-3-42
SN1232324422 11 test-string-first
SN322211 securities
HH keyword-string:123456321-net mark (11-22)
[Code].....
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Mar 11, 2011
For example, I have a text file with data which lists numerical values from two separate individuals
Code:
Person A
100
200
300
400
500
600
700
800
900
1000
1100
1200
Person B
1200
1100
1000
900
800
700
600
500
400
300
200
100
How would I go about reading the values for each Person, then being able to perform mathematical equations for each Person (finding the sum for example)?
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