I need to display a line in an xterm window but i want to revese the colors so that the background color becomes the foreground color and the foreground color the background color. I want to do this as part of ksh script.
Can somebody tell me how to do this ?
Thanks,
Abu. (5 Replies)
when I do
$ ls z*
List of all files begining with 'z'. But what if I want to do a reverse lookup. Just for interest sake ;)
$ ls ztr
should be same as
$ ls ztr*
$ ls zt*
$ ls z* (2 Replies)
Hi Everybody,
I want to write a script in unix which will automatically FTP a .txt file from my client machine D: drive(Windows)
That is I want to FTP a file from my PC to UNIX box but this should be done from UNIX box by a shell script. (i.e. I will invoke the script in UNIX and FTP will be... (4 Replies)
Hello,
How do i sort a csv file. i should be sorting column1(varchar),column2*(varchar) in ascending and column4 in descending order(numeric datatype).
I tried few combinations of sort, but doesn't seem to be getting the right result.
sort -t "," -k 1 -k 2 -k 4nr file
any help is... (3 Replies)
Hello guys
How can I use egrep to match word1 but not word2...word1.
What I mean
suppose that I have the following text, and my word1=pizza and word2=eat
I hate to eat pizza because I ma eating it each day
Pizza is good
I like vegetarian and Italian Pizza
eating healthy food is... (7 Replies)
Hi All,
I have a String str="Manish". I would like to reverse it.
I know the option to do this in bash is: echo "Manish" | rev
but I have seen an alternate solution somewhere, which states that:
str="Manish" echo $str | awk '{ for(i=length($0);i>=1;i--) printf("%s",substr($0,i,1));... (7 Replies)
Hello,
I have a large list of names and would like to do a reverse sort on them i.e. the sort should be by the ending and not by the beginning of the word.
I had written in awk a small script but it does wrong things
{ for(i=length($0);i>=1;i--)
printf("%s/n",substr($0,i,1)); }
Could anyone... (3 Replies)
I'm trying to reverse every even line in my file using the awk command below but it prints only the odd lines but nothing else:
$ awk '(NR % 2) {print}; !(NR % 2) {print | "rev";}' myfile
Any idea what I might have done wrong?
Thank you. (10 Replies)
Discussion started by: ivpz
10 Replies
LEARN ABOUT ULTRIX
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)