Hi everyone, first time visitor to these forums here.
Keeping a long story short I've been attempting to learn how to code in bash. I have VERY little previous experience with coding languages besides simply copying and pasting batch scripts for Windows. So, with that in mind I've followed a few tutorials on how to use some basic commands and how to write and execute basic scrips in bash. I'm now trying to put what I've learned to the test and am attempting to write out an entire (admittedly simple and useless) script without following any kind of tutorial. Here's what I have so far:
It's just a simple script that asks the user to input their information, and confirm that the details provided are correct. What I'm trying to do is have it so that if the details are incorrect and the user inputs "No" after being asked to confirm their details, a message is displayed asking them to enter their information again, and then return to the beginning of the script. However I'm struggling with getting to grips with the "while" command. Currently it doesn't matter what the user inputs as an answer, the script will restart anyway.
I've attempted to look online at some "while" loop tutorials, but so far I'm either not looking in the right places or It's just going straight over my head right now.
Can anyone offer some advice? If anyone does I really would appreciate it, I know that this is incredibly dull and basic for most of you...
I have a folder with lots of file. e.g. a.txt, b.txt, c.txt.... I want to put these files from the source directory and place them in a destination directory in a specific order, such as /destination/a/a.txt, /destination/b/b.txt, /destination/c/c.txt, ......
Please help. Thx :confused: (3 Replies)
Hey all I'm working on a script that will scour a directory of 6000+ files for a line that at the end has a number.
Something like 'The number of outputs is: 39200'
I'm trying to devise a script to add all of these numbers up, so far I have the grep statement that pulls out each individual... (7 Replies)
. ./testFile.sh
url=http://ichart.finance.yahoo.com/table.csv?s= suf=&d=5&e=9&f=2009&g=d&a=1&b=4&c=1999&ignore=.csv
wget $url$s1$suf;
sleep 10;
cat header.txt > $s1.txt;
chmod 777 $s1.txt;
sed '1d' table.csv?s\=$s1 >> $s1.txt;
rm -Rf table*
Very new at shell scripting as you can see... (3 Replies)
Hello there
Been using Unix bash scripting for two days now so am very new to this. I am currently doing a project now and i'm basically making a noughts and crosses game (or tic tac toe).
I have created the board using an array. When I try and check to see if the array is empty using an If... (3 Replies)
Hello,
I'm new to Sheel script and I need your help for a script I need to develop (for me).
Indead, I have a software which log all entry from internet and save it in text file.
But, the log is practically unreadable because every 256 characters jump to a new line (even if the message is... (5 Replies)
1. The problem statement, all variables and given/known data:
Arguments:
http://farm9.staticflickr.com/8070/8212131370_8b6e8c10c5_c.jpg
I am given these three arguments. $1, $2, $3
The first argument is the path to a directory.
So, how would I go into the directory and compare files?
I... (5 Replies)
Hi All,
I have a script that I wrote on a bash shell, I use it to sort files from a directory into various other directories. I have an variable set, which is an array of strings, I then check each file against the array and if it is in there the script sorts it into the correct folder.
But... (5 Replies)
Hi All,
I am trying to monitor CPU load of few processes, with the same name.
The output that I get from top is the following
28171 root 20 0 1089m 21m 3608 S 103 0.3 15:16.89 /opt/ppp//h264rtptranscoder.bin --videoPort=14504 --audioPort=14505
27589 root 20 0 1060m 23m... (3 Replies)
Hi everyone,
i have the following script.sh:
foo='lsusb | grep Webcam | cut -c16-18'
sudo /home/user/public/usbreset /dev/bus/usb/001/$foo
when i try to call this script from python using subprocess.call("script.sh", shell=True) it seems that only 'sudo /home/user/public/usbreset' is being... (6 Replies)
Hi all
I have the folloing process that needs checking often:
ps -ef | grep ih
bscsrtx 206 15901 0 11:28:10 pts/6 0:00 fih -r4
bscsrtx 218 15901 0 11:28:27 pts/6 0:01 aih
bscsrtx 29763 15901 4 11:27:16 pts/6 0:59 rdh -prih
root 429 27268 0 11:30:15 pts/td ... (13 Replies)
Discussion started by: fretagi
13 Replies
LEARN ABOUT OPENSOLARIS
escape
escape(1) Mail Avenger 0.8.3 escape(1)NAME
escape - escape shell special characters in a string
SYNOPSIS
escape string
DESCRIPTION
escape prepends a "" character to all shell special characters in string, making it safe to compose a shell command with the result.
EXAMPLES
The following is a contrived example showing how one can unintentionally end up executing the contents of a string:
$ var='; echo gotcha!'
$ eval echo hi $var
hi
gotcha!
$
Using escape, one can avoid executing the contents of $var:
$ eval echo hi `escape "$var"`
hi ; echo gotcha!
$
A less contrived example is passing arguments to Mail Avenger bodytest commands containing possibly unsafe environment variables. For
example, you might write a hypothetical reject_bcc script to reject mail not explicitly addressed to the recipient:
#!/bin/sh
formail -x to -x cc -x resent-to -x resent-cc
| fgrep "$1" > /dev/null
&& exit 0
echo "<$1>.. address does not accept blind carbon copies"
exit 100
To invoke this script, passing it the recipient address as an argument, you would need to put the following in your Mail Avenger rcpt
script:
bodytest reject_bcc `escape "$RECIPIENT"`
SEE ALSO avenger(1),
The Mail Avenger home page: <http://www.mailavenger.org/>.
BUGS
escape is designed for the Bourne shell, which is what Mail Avenger scripts use. escape might or might not work with other shells.
AUTHOR
David Mazieres
Mail Avenger 0.8.3 2012-04-05 escape(1)