10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All,
There is a code like below in my script
###############################################
###Create Directories and Sub-Directories
###############################################
dpdir=DP_FROM_${from}_TO_${to}
mkdir $dpdir
cd $dpdir
mkdir AWQM WFCONTROLLER PROVCO PRISM
... (1 Reply)
Discussion started by: pvmanikandan
1 Replies
2. Shell Programming and Scripting
I am trying to do the following task :
export ENV=aaa
export ENV_PATH=$(cd /apps | ls | grep $ENV)
However, it's not working. What's the way to change to directory and search some file in that directory in single command
Please help. (2 Replies)
Discussion started by: saurau
2 Replies
3. UNIX for Dummies Questions & Answers
Hi,
I Installed mysql on my CentOS 6.2 Server. But when I tried to change the location of /var/lib/mysql to another directory. I can't start the mysql. Below is what I've done
yum install mysql mysql-server mysql-devel
mkdir /path/to/new/
cp -R /var/lib/mysql /path/to/new
chown -R... (1 Reply)
Discussion started by: ganitolngyundre
1 Replies
4. AIX
Dear all expects,
I have a security problem that I would like to resolve.
I need to create a user ID in my AIX 5.3 environment and to point the login to a specific directory for FTP purposes. There is only 2 directories that I can allow the user ID to perform read/write. I would like to prevent... (2 Replies)
Discussion started by: kwliew999
2 Replies
5. Shell Programming and Scripting
I have a simple shell script that prompts the user to enter a directory to navigate to.
What i want it to do and i don't know how to do this is if the directory is invalid automatically navigate to the home directory.
echo "enter a directory to navigate to:"
read directory
cd $directory... (6 Replies)
Discussion started by: icelated
6 Replies
6. Shell Programming and Scripting
Hi,
This is a quick one.
I have got a review comment in one of the scripts that i wrote:
"In UNIX script it not advisable to use cd to a directory and then run command."
Is this true?
I was trying to cd to log directory and use some cat or head or ls command.
Many Thanks,
Sam (2 Replies)
Discussion started by: samplify
2 Replies
7. UNIX for Dummies Questions & Answers
I have a directory that is existing under my root dir of the FTP server. The DIR name is 'Software Patch'. I want to move in to that DIR to download some patches. But, when I issued a command 'cd SOftware Patch', the system said that it cannot find the dir 'Software'. I tried all possible ways like... (2 Replies)
Discussion started by: vskr72
2 Replies
8. Shell Programming and Scripting
hi,
Iam in directory A. I run a script from there. inside the script i have a command cd B.
When i come out of the script directory is A only.
Even when i come out scrip i want the directory to be B
How to achieve (2 Replies)
Discussion started by: mkan
2 Replies
9. Shell Programming and Scripting
I want to limit the directories that a user can
access. When this users logs in, I do not want
them to cd to any directory but those in their
$HOME. In other words:
login:
pwd:
/home/user
cd / -- user tries to cd to root directory.
pwd
/home/user -- user is still in home... (4 Replies)
Discussion started by: oscarr
4 Replies
10. Shell Programming and Scripting
Hi all,
I'm trying to wirte a small shell script in Linux. My script has the flow like,
cmd1
cmd2
cd testdata
cmd3
After exiting the program, the CWD remains the same as where I execute the program. I need it to be changed to the latest updated directory in the program. How can I do... (1 Reply)
Discussion started by: vadivel
1 Replies
FLOCK(1) BSD General Commands Manual FLOCK(1)
NAME
flock -- Provide locking API for shell scripts
SYNOPSIS
flock [-dnosvx] [-w timeout] lockfile|lockdir [-c command] | [command ...]
flock [-dnsuvx] [-w timeout] lockfd
DESCRIPTION
The flock utility provides flock(2) access to the command line or scripts. The first form locks a file or directory while the command pro-
vided is executed. If the file or directory does not exist, then a file is created.
The second form can use an arbitrary file descriptor that is provided from a shell script for example:
(
flock -s 100
# commands to be executed under the lock
) 100> /path/to/lockfile
The following options are available:
-c command Pass a command to a the shell.
-d, --debug Provide debugging output.
-n, --nb, --nonblock
Don't block and fail immediately if the lock could not be obtained.
-o, --close Close the file before executing the command. This is useful if the child forks and should not be holding the lock.
-s, --shared Obtain a shared lock.
-u, --unlock Unlock an existing lock. This is available only for a file descriptor.
-v, --verbose On error print an explanation of the failure.
-w, --wait, --timeout seconds
Fail if the lock could not be obtained after seconds.
-x, --exclusive Obtain an exclusive lock.
EXIT STATUS
The flock utility exits 0 on success, and >0 if an error occurs.
SEE ALSO
shlock(1), flock(2)
HISTORY
An flock utility appeared in NetBSD 6.1.
BSD
November 2, 2012 BSD
07-11-2008
