Sponsored Content
Top Forums Shell Programming and Scripting Do something only that last iteration of loop Post 302770118 by Corona688 on Thursday 14th of February 2013 01:15:47 PM
Old 02-14-2013
There's lots of ways to do it.

You could mkdir -p, so mkdir won't complain when the directory already exists.

You could [ -d dirname ] || mkdir dirname.

You could mkdir dirname 2>/dev/null and just ignore all errors.

The problem is, you're either doing or checking something 10,000 times, that you didn't need to do even once, adding three lines of code to your function to save one line of code outside it. Why bother?
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

New iteration of for-loop without incrementing?

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

Pick up the return code for every iteration and display the result only once in loop.

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

howto stop loop iteration

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

for loop iteration and shell programming startup

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

while loop stops after first iteration - remote ssh exit command problem?

I have written the following script to update some Debian boxes. #!/bin/bash mxg_hosts_file="/etc/mxg/ssh-hosts" while read line ; do mxg_host="$(echo ${line} | awk -F":" '{print $1}')" mxg_port="$(echo ${line} | awk -F":" '{print $2}')" echo "Connecting and Upgrading... (3 Replies)
Discussion started by: jelloir
3 Replies

6. Shell Programming and Scripting

For Loop in shellscript - Printing Output for every iteration

for VGLIST in `lsvg -o` do CLOSED_OUT=`echo $VGLIST | lsvg -l $VGLIST | awk '{print $6 " " $7}' | grep closed` if ]; then echo "Filesystems $CLOSED_OUT in VG that are in Closed status" else echo "\n Some message" fi Above Code is working fine, but echo "Filesystems $CLOSED_OUT... (8 Replies)
Discussion started by: chandu123
8 Replies

7. Shell Programming and Scripting

Getting the iteration count in WHILE LOOP

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

8. Shell Programming and Scripting

While loop is causing ssh command to exit from script after first iteration.

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

9. Shell Programming and Scripting

Loop iteration with two variables

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

10. Shell Programming and Scripting

While loop is running only for the first iteration

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
gnomevfs-mkdir(1)						   User Commands						 gnomevfs-mkdir(1)

NAME
gnomevfs-mkdir - make a new directory at a VFS location SYNOPSIS
gnomevfs-mkdir URI DESCRIPTION
gnomevfs-mkdir makes a new directory at a URI location that supports the creation of new directories. OPERANDS
The following operands are supported: URI Specifies the location of the new directory in standard URI format. EXAMPLES
Example 1: Making a New Directory in the Home Directory example% gnomevfs-mkdir file:///home/user/newdir ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables: NLSPATH. EXIT STATUS
The exit value 0 is returned regardless of success or failure. FILES
The following files are used by this application: /usr/bin/gnomevfs-mkdir Executable to make a new directory at a VFS location ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWgnome-vfs | +-----------------------------+-----------------------------+ |Interface stability |External | +-----------------------------+-----------------------------+ SEE ALSO
gnomevfs-cat(1), gnomevfs-copy(1), gnomevfs-info(1), gnomevfs-ls(1) NOTES
Written by Stephen Browne, Sun Microsystems Inc., 2004. SunOS 5.10 6 Sep 2004 gnomevfs-mkdir(1)
All times are GMT -4. The time now is 10:09 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy