I ran into this issue and thanks to various postings in various forums, was
able to figure out the solution but didn't see one posting that laid the
whole issue out cleanly. So thought the following might help others ...
------------------------------------------------------------------------... (2 Replies)
I am trying to get a script working that will perform a simple database lookup using the join command.
Here are the two files that I am trying to join:
% cat lookup1.txt
Number_1 Other_data_a
Number_5 Other_data_b
Number_8 Other_data_c
Number_10 Other_data_d
% cat... (2 Replies)
for i in `seq 1 10 ` ; do
printf $i '\n';
done
gives me this:
1234567891064mbarch ~ $ (output followed by bash prompt) :(
I've tried so many ways to create a newline at the end. Does anyone have any ideas.. Thanks in advance. Sorry (7 Replies)
I'm trying to write batch scripts of the kind that start a Cygwin session in rxvt from the desktop, with the added feature that the session starts in a folder other than $HOME. I want to do this for two folders I use often.
According to the manpage, rxvt has a "-cd" command. Therefore, at first... (4 Replies)
I am having an issue with using cygwin (on Windows XP). My script errors on if -command. The script here works fine on Linux, but cygwin fails...
#!/bin/sh
if then
echo "Test"
fi
The error -message:
./ShellTest.sh: line 4: syntax error near unexpected token `fi'
./ShellTest.sh:... (1 Reply)
Hi,
I'm pretty poor at using UNIX but I'm learning. Please help me with these simple problems! Much appreciated!
1. I've changed my shell from bash to csh but I prefer bash. How do I change back? I've tried using chsh -s but it's not working!
2. I'm trying to download TopCat. I've done... (2 Replies)
Dear All,
I have the following awk script.
#!/bin/bash
sh stdev.cmd data.file | awk '{print $2}' > out.data
read d < out.data
echo $d
awk '{print $1,$2- $f}' new > newz
The script runs "stdev.cmd" and output a file "out.data" and the value of the... (2 Replies)
I have installed ruby with cygwin
according to these inst:
w w w .sproutcore.com/install_win/#tab=advanced-install
but at the last command:
gem install sproutcore I'm getting a bunch of errors:
$ gem install sproutcore
Fetching: rack-1.3.2.gem (100%)
Fetching:... (0 Replies)
Hello all!
This is my first post and I'm very new to programming. I would like help creating a simple perl or bash script that I will be using in my work as a junior bioinformatician.
Essentially, I would like to take a tab-delimted or .csv text with 3 columns and write them to a "3D" matrix:
... (16 Replies)
Discussion started by: torchij
16 Replies
LEARN ABOUT DEBIAN
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)