---------- Post updated at 11:02 PM ---------- Previous update was at 10:54 PM ----------
Quote:
Originally Posted by RudiC
OK, this was a pain in the neck ... <snip> ... but I'm out of patience now...
Been there myself many times. Unfortunately, your solution won't work reliably. The timing of hexdump's output and awk's output isn't in anyway guaranteed.
With a 3 line sample file and stdout a terminal, the hexdump output for all three lines shows up after all of awk's output for those three lines.
With the same sample file and stdout redirected to a file, the hexdump output for all three lines occurs in the middle of the first line of awk output.
I'm almost certain that the consistent difference is a side effect of my awk implementation increasing buffering in the absence of interactivity.
Regards,
Alister
Last edited by alister; 09-14-2012 at 08:16 AM..
Reason: Forgot space in regexp
Hi people,
i have a nice problem to solve..
in an text page i must change all the "*.php" occourences to the respective lowercase..
Example:
...
<tr><td>
<form action="outputEstrazione.php" method="get">
<table cellspacing='0,5' bgcolor='#000000'><tr><td>
<font size='2'... (5 Replies)
i read the "cat" manpages,
but i could not find to tell it like
"read file XY.BIN from byte 1000 to byte 5000"
can somebody please point me into the right direction?
cat would be the ideal tool for my purpose, the way it behaves, but i miss this ranges option.
thanks for any input. (2 Replies)
Hello everyone
Sorry I have to add another sed question. I am searching a log file and need only the first 2 occurances of text which comes after (note the space) "string " and before a ",". I have tried
sed -n 's/.*string \(*\),.*/\1/p' filewith some, but limited success. This gives out all... (10 Replies)
logs:
"/home/abc/public_html/index.php"
"/home/abc/public_html/index.php"
"/home/xyz/public_html/index.php"
"/home/xyz/public_html/index.php"
"/home/xyz/public_html/index.php"
how to use "cut" or "awk" or "sed" to get the following result:
abc
abc
xyz
xyz
xyz (8 Replies)
I came across and unexpected behavior with redirections in tcsh. I know, csh is not best for redirections, but I'd like to understand what is happening here.
I have following script (called out_to_streams.csh):
#!/bin/tcsh -f
echo Redirected to STDOUT > /dev/stdout
echo Redirected to... (2 Replies)
Hello.
Following recommendations for one of my threads, this is working perfectly :
#!/bin/bash
CNT=$( grep -c -e "some text 1" -e "some text 2" -e "some text 3" "/tmp/log_file.txt" )
Now I need a grep success for some thing like :
#!/bin/bash
CNT=$( grep -c -e "some text_1... (4 Replies)
Hello,
I have a question regarding extracting parts of a string and the meaning of # and % in the syntax. I created an example below.
# filename=/first/second/third/fourth
#
# echo $filename
/first/second/third/fourth
#
# echo "${filename##*/}"
fourth
#
# echo "${filename%/*}"... (3 Replies)
Dear Ladies & Gents,
I have a requirement to delete all the log files in /var/log/test directory that are older than 10 days and their first line begin with "MSH" or "<?xml" or "FHS". I've put together the following BASH script, but it's erroring out:
for filename in $(find /var/log/test... (2 Replies)
So, I have a folder, containing subdirs like this:
52334d50
52365245
524b4450
524f3350
52533950
52535050
52555550
now I want to go ahead and rename all those folder:
hex -> ascii (8 Replies)
Discussion started by: pasc
8 Replies
LEARN ABOUT FREEBSD
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)