You've probably edited the script with a Microsoft editor such as Notepad.
Please post the output from this "sed" command which is designed to make control characters visible. A normal unix text file line terminator will be displayed as a dollar sign. One which has been edited with a Microsoft editor will also have carriage-return characters displayed as "\r".
Where "scriptname" is the name of your script file.
Hi All,
I was wondering, how can I echo password using a character such as '*' in unix?
In my machine, password is not echoed, so it is only blank space when I enter any password.
So, when I enter a command such as "lock", how can I set the echo character to "*" or something else for... (4 Replies)
Hi, I have a script for replacing bad characters in filenames
for f in *; do mv $f `echo $f | tr '+' '_'`
done;
this replaces + for _
But I need to replace all bad characters ? / % + to _
Pls how can i do this in one script ? (3 Replies)
hi all
I have a file that has sone spaces in start then / at last. i want to get rid of this. how to do?
eg.
11414/
49878/
27627/
I WANT THE FILE AS
11414
49878
27627
PLEASE HELP (3 Replies)
Hi All,
I have a file which is delimeted with the character '. i need to replace this character with the same character and also a new line.
Can anyone please help me with the tr command for this.
Many thanks
Karan (11 Replies)
Hi All,
example data.log
526569346 66815531961 09
526569346 66815531961 09
526569346 66815531961 09
526569346 66815531961 09
526569346 66815531961 09
I want like this to
526569346|66815531961|09
526569346|66815531961|09... (4 Replies)
Hi all,
I wrote one code and i face some difficulties to exclude some characters from the echo command
more specifically the last command is
echo $a "${RESULT}" >> results_data_srcip
the results which i have taken are:
nfcapd.200908250000 -.352228
nfcapd.200908250005 -.345085
... (4 Replies)
Hi fellow experts,
I have a question for you. Data looks like:
00877,05/13/2010,PBO,P,0000708331,518
00877,05/13/2010,PBO,P,0000708331,519
...
...
00877,05/13/2010,PBO,P,0000708331,2103
00877,05/13/2010,PBO,P,0000708331,2104,etc,etc
Basically I have to replace 518,519,2103,2104,... (4 Replies)
sed -e "s// /g" old.txt > new.txt
While I do know some control characters need to be escaped, can normal characters also be escaped and still work the same way? Basically I do not know all control characters that have a special meaning, for example, ?, ., % have a meaning and have to be escaped... (11 Replies)
Hi,
Iam using ksh and trying to execute the following syntax to replace one word of the sentence with a new word. But somehow sed is not able to replace the old value with new value. Please let me know where Iam going wrong.
Sample Code :
-->
export line="VORTEX,abcdef"
export... (3 Replies)
Hi everyone,
I'm executing a shell script and one of the commands is creating a file with text via echo.
However, if the text within echo has "\t" or similar, it automatically translates it into a TAB character, same goes for other special characters.
I know that if I put another "\"... (7 Replies)
Discussion started by: demmel
7 Replies
LEARN ABOUT POSIX
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)