01-30-2009
From perldoc perlop
Quote:
qx/STRING/
`STRING`
A string which is (possibly) interpolated and then executed as a system command with "/bin/sh" or its equivalent. Shell wildcards, pipes, and redirections will be honored. The collected standard output of the command is returned; standard error is unaffected. In scalar context, it comes back as a single (potentially multi-line) string, or undef if the command failed. In list context, returns a list of lines (however you've defined lines with $/ or $INPUT_RECORD_SEPARATOR), or an empty list if the command failed.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
if ( system ("/bin/cat $File1 >> $File2") ) {
print("#WARNING RAISED : /bin/cat File1 >> File2 - FAILURE!\n"); } I came across this code, would appreciate if someone can tell me if my understanding is correct?
the perl code tell the system to cat file 1 into file 2, if command fails, print... (4 Replies)
Discussion started by: new2ss
4 Replies
2. UNIX for Dummies Questions & Answers
I am totally new to unix commands but I need to understand the following command which is a part of a perl script..what does this mean?
myPwd = $(pwd)
myTracker = $myPwd/myTracker.out
exec > $myTracker 2>&1 (1 Reply)
Discussion started by: athri
1 Replies
3. UNIX for Dummies Questions & Answers
Hi, I need help again. When I run this shell script, it only runs the unld_date.sql piece and exits. How can I structure this to run all the way to the end? When I don't have the unld_date.sql piece in here, everything runs fine from the date compare piece all the way to the end. Thanks in... (5 Replies)
Discussion started by: siog
5 Replies
4. UNIX for Dummies Questions & Answers
I am able to run the UNIX commands in a Windows box from a UNIX box through "SSH" functionality. But whenever the SSH connection is established between UNIX and Windows, password for windows box is being asked.
Is there a way to avoid asking password whenever the SSH connection is made? Can I... (1 Reply)
Discussion started by: D.kalpana
1 Replies
5. Programming
Hi,
-How can I get number of files, cpu usage (percentage), memory usage, disk usage, ...etc, using C program ... I can use unix command ( system(command) )but I want the value to be returned back to my C program to use it in my code? How can I do that?
Thanks in advance ... (2 Replies)
Discussion started by: zainab
2 Replies
6. Shell Programming and Scripting
I understand that in order to run basic unix commands I would normally type at the prompt, I would have to use the following format
system(ls -l);
or
exec(ls -l);
But when I actually try to use the command, the script fails to compile and keeps telling me there is an error with this line. ... (1 Reply)
Discussion started by: userix
1 Replies
7. Shell Programming and Scripting
Hi,
I would like to write a script with include more than 6 unix commands.
my script like below:
echo " script started"
ls -ld
bdf | grep "rama"
tail -10 log.txt
...
..
...
now, i want to run above unix commands one by one.
example:
first the ls -ld command will be... (3 Replies)
Discussion started by: koti_rama
3 Replies
8. Shell Programming and Scripting
Executing two unix commads via perl script one after another
e.g: make clean
bsub -i -q short make
have tried using exec but the second command doesnt executes (1 Reply)
Discussion started by: rajroshan
1 Replies
9. Programming
Hi All,
Is there anything wrong with below syntax?
qx {perldoc -v ModuleName.pm | grep -i Description }
BTW, this question is related to Perl.
Thanks. (3 Replies)
Discussion started by: jal_capri
3 Replies
10. Shell Programming and Scripting
Hi All,
I have put a perl script together to go and collect some information from multiple nodes/endpoints. The script works absolutly fine however I want to make it quicker.
You will see in the below that my script calls an expect script called ssh_run_cmd2.exp followed by the IP of... (7 Replies)
Discussion started by: mutley2202
7 Replies
LEARN ABOUT HPUX
urlcoding
URLCODING(3) libbash urlcoding Library Manual URLCODING(3)
NAME
urlcoding -- a Libbash library for encoding and decoding URL's.
SYNOPSIS
urlEncodeString [-l] <STRING>
urlEncodeFile [-l] <FILE>
urlEncodeStream [-l]
urlDecodeString <STRING>
urlDecodeFile <FILENAME>
urlDecodeStream
DESCRIPTION
urlcoding is a collection of functions that convert ASCII-text to standard URL's and vice-versa. The AWK code used is based on code by Heiner
Steven <heiner.steven@odn.de>
The function list:
urlEncodeString Creates a URL from an ASCII string
urlEncodeFile Converts a file into URL-valid text
urlEncodeStream Converts standard input into URL-valid text
urlDecodeString Converts a URL-encoded text back to a plain-text form
urlDecodeFile Coverts URL-encoded text in a file back to plain text
urlDecodeStream Converts URL-encoded standard input to text
Detailed interface description follows.
The [-l] option for the encoding functions should be used when line-feed characters ('
') are to be encoded as well.
All functions print the results of their conversions to standard output.
The exit status of all functions is that of the command 'awk', with '0' for success
FUNCTIONS DESCRIPTIONS
urlEncodeString [-l] <STRING>
Converts STRING - a string of ASCII characters - to URL.
urlEncodeFile [-l] <FILE>
Coverts FILE of URL-encoded text to plain text
urlEncodeStream [-l]
Converts text from standard input to URL-text.
urlDecodeString <STRING>
Converts URL-encoded string STRING back to text.
urlDecodeFile <FILENAME>
Converts the URL-encoded text in FILE to plain text.
urlDecodeStream
Converts the URL-encoded text from standard input to plain-text
AUTHORS
Alon Keren <alon.keren@gmail.com>
SEE ALSO
ldbash(1), libbash(1)
Linux Epoch Linux