12-07-2012
When I tested command line , $? returned 1 for the grep output while finding the closed file systems.
My requirement for this script is to find closed/syncd filesystems as non root user in all the volume groups OS being AIX 6.1. Please share your ideas so that I can follow along. Thank you.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Another question, is it possible to, in a for-loop incrementing until it reaches a certain number, to have it loop again without incrementing? Just have it drop what it is doing when it reaches this command and start again at the same number it was at? I know I could make a while loop and just... (0 Replies)
Discussion started by: jeriryan87
0 Replies
2. Shell Programming and Scripting
Hi All,
I amlearning UNIX scripting. I have a small query. I would be thankful if any one helps me out.
I have a below piece of code which delets the files. If file dosent have the permissions to delete a particular file I have used 2>>operator to track the error code.
But my objective is... (1 Reply)
Discussion started by: manas6
1 Replies
3. Shell Programming and Scripting
I wonder how to stop further loop iterations when conditions gets false e.g.
This file.txt contains the following structure :
1
2
3
4
5
6
7
8
9
10
How to stop iteration when if statement gets false ?
for n in `cat file.txt`
do
if (( n<=5 )) (1 Reply)
Discussion started by: presul
1 Replies
4. Shell Programming and Scripting
question :how can i iterate to next item in for loop with the loop
e.g
for i in `cat abc.txt`
do
echo $i // this will display first line
i=$i+1; // this doesnt work for me.
echo $i; //this will display secound line
done
question: is my approach to manipulate text good?
I have... (3 Replies)
Discussion started by: kashif_islam
3 Replies
5. Shell Programming and Scripting
I have a script with logic like:
my_function()
{
if
mkdir $1
mkdir mydir_${2}
else
do something else
fi
}
read in list of items
while read list
do
my_function $list `date`
done
so basically it will make a directory for every name in the list and create a directory with the... (6 Replies)
Discussion started by: glev2005
6 Replies
6. Shell Programming and Scripting
bash in RHEL 6.4
I have a requirement in which I want to get the iteration count from a WHILE LOOP.
The below mentioned simple script test.sh works fine. In the below script, the WHILE loop will iterate every 5 seconds infinitely until it greps the string BASKETBALL from /tmp/somestring.txt... (6 Replies)
Discussion started by: John K
6 Replies
7. Shell Programming and Scripting
I am trying to check multiple server's "uptime" in a loop over "ssh".
When I execute multiple ssh commands with hard coded servernames script is executing fine.
But when I pass server names using while loop, script is exiting after checking first server's status, why?
# serverList... (8 Replies)
Discussion started by: kchinnam
8 Replies
8. Shell Programming and Scripting
Hello,
I have been stuck on this for some time and invested many hours trying to find a solution. I am trying to either loop through two variables or or two arrays and not sure how to do it. I am limited to ksh only, and don't have the ability to do a foreach, or for i AND for j etc...I... (19 Replies)
Discussion started by: Decoy Octopus88
19 Replies
9. Shell Programming and Scripting
Hello,
I've written a script to automate encoding of all the MP4 files in a directory (incl. subdirectories). But unfortunately it's running for the first MP4 file only.
My machine details:
root@Ubuntu16:~# uname -a
Linux Ubuntu16 4.10.0-28-generic #32~16.04.2-Ubuntu SMP Thu Jul 20 10:19:48... (2 Replies)
Discussion started by: prvnrk
2 Replies
10. Shell Programming and Scripting
So I am writing a bash script that will search a file line by line for unix timestamps, store all of the timestamps into an array, then check how many of those timestamps were created within the last hour, and finally increment a counter every time it finds a timestamp created within the last hour.... (6 Replies)
Discussion started by: jsikarin
6 Replies
close(n) Tcl Built-In Commands close(n)
__________________________________________________________________________________________________________________________________________________
NAME
close - Close an open channel
SYNOPSIS
close channelId
_________________________________________________________________
DESCRIPTION
Closes the channel given by channelId.
ChannelId must be an identifier for an open channel such as a Tcl standard channel (stdin, stdout, or stderr), the return value from an
invocation of open or socket, or the result of a channel creation command provided by a Tcl extension.
All buffered output is flushed to the channel's output device, any buffered input is discarded, the underlying file or device is closed,
and channelId becomes unavailable for use.
If the channel is blocking, the command does not return until all output is flushed. If the channel is nonblocking and there is unflushed
output, the channel remains open and the command returns immediately; output will be flushed in the background and the channel will be
closed when all the flushing is complete.
If channelId is a blocking channel for a command pipeline then close waits for the child processes to complete.
If the channel is shared between interpreters, then close makes channelId unavailable in the invoking interpreter but has no other effect
until all of the sharing interpreters have closed the channel. When the last interpreter in which the channel is registered invokes close,
the cleanup actions described above occur. See the interp command for a description of channel sharing.
Channels are automatically closed when an interpreter is destroyed and when the process exits. Channels are switched to blocking mode, to
ensure that all output is correctly flushed before the process exits.
The command returns an empty string, and may generate an error if an error occurs while flushing output. If a command in a command pipe-
line created with open returns an error, close generates an error (similar to the exec command.)
EXAMPLE
This illustrates how you can use Tcl to ensure that files get closed even when errors happen by combining catch, close and return:
proc withOpenFile {filename channelVar script} {
upvar 1 $channelVar chan
set chan [open $filename]
catch {
uplevel 1 $script
} result options
close $chan
return -options $options $result
}
SEE ALSO
file(n), open(n), socket(n), eof(n), Tcl_StandardChannels(3)
KEYWORDS
blocking, channel, close, nonblocking
Tcl 7.5 close(n)