Hi all-
I've been fooling with this for a few days, but I'm rather new at this...
I have a bash variable containing a long string of various characters, for instance:
JUNK=this that the other xyz 1234 56 789
I don't know what "xyz" actually is, but I know that:
START=he other
and ... (2 Replies)
Hi, I'm new at bash scripting -- can anyone here help me about the sed command?
I need to be able to edit and or delete a text from an outside file ie file.txt -- I'm passing a variable and not a string
I was thinking of something like
echo -n "What do you want to edit?: "
read edit
sed... (1 Reply)
In bash, I can match the ' character in a substition involving the line ending symbol $, easily.
In tcsh I ran into a problem.
Code:
sed "s/$/'/g" filename
sed "s/$/'/g" < filename
sed -e "s/$/'/g" filename
Unmatched '.
Where can I find out why this is the case? (2 Replies)
I am trying to execute a script with sed that works well in ksh(Linux) however in bash(solaris 8) though it does not give any errors the output file becomes 0 byte.
header of the script:
ksh:2$ head news.ksh
#!/bin/ksh... (2 Replies)
Hello everyone I'm doing a program in bash and wanted to know how can I do to delete document lines the words not ending in S with SED, ie, show only those ending with the letter S.
I probe with:
sed -e /$.*/d "$file" | more
to delete all lines NOT ending in S but not work!... (3 Replies)
Hey all,
So I've been banging my head against this for a few hours (:wall:) and I can't see whats wrong with it, each part seems to work fine on its own when entered at command line, but then it falls down when pulled together.
I'm writing a script to translate fractional atomic coordinates... (3 Replies)
Hi i am having a stange problem.
Basically for my sed script used within bash i can unly use a single Quote with sed '. (if i use " then i get command garbled error with sed )
The problem with this is BASH does not interprit variables within single quote ' so we cannot use any of the BASH... (7 Replies)
I don't know if you guys get this problem sometimes at Terminal but I had been having this problem since yesterday :( Maybe I overdid the Terminal. Even the codes that used to work doesn't work anymore.
Here is what 's happening:
* I wanted to remove lines containing digits so I used this... (25 Replies)
In the bash below when the program is opened the download function runs and downloads the getCSV file and on the screen "Downloading getCSV.csv:%" displays and when it completes the menu function is called. However, as of now the bash opens and closes after a few seconds and I'm not sure... (4 Replies)
Hi Guys
I have another problem I'm trying to solve and hope that some one can help me here.
This is the scenario:
I have a file and I want to add a line on the 3rd line of the file using a bash script. but instead its adding the the bash variable $WEBSITE.
Below is the bash script I'm... (6 Replies)
Discussion started by: linuxjunkie
6 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)