{} is used for building strings.
the above line of code is taking first parameter passed to this script as argument.what basename command will do here is if you have given the filename with path like /abc/dir1/dir2/filename then the
Value of FILE that is $FILE will have value "filename".
the above command will remove the filename and assign path of file to BANK.
BANK will be "/abc/dir1/dir2/"
Now the INFILE will have value "filename./abc/dir1/dir2/.3456"
here $$ gives the process id. in unix each command will run as a process and generates id.and value of $$ may differ in each run.
I have a fix_table.ksh script that takes a TABLENAME and a date.
So, in jk_table_file.txt I have the tables...one per line, and
in jk_out_file.txt I have the date in the format I need.
The following doesn not 'want' to work in a shell script...
for TABLE in `cat jk_table_file.txt`; do
... (2 Replies)
Hi,
I am new to shell programming, and hve been given a request to write a shell script.
Is there any good places to go to see examples of how to write shell programming scripts?
Thanks (4 Replies)
For what purposes should we use shell
/what are the tasks we can achieve using shell
which is best book to learn shell programming
and will nayone tell me diff between shell programming aand shell scripting?
Thank u in advance. (1 Reply)
Hi,
Iam new to shell program,
I want to check a file which is having same lines 2 times and i want to display it in a seperate file.
File format is :
AQWERTYU|1234567890
ASDFGHJK|0987654321
ZXCVBNML|1098576453
AQWERTYU|1234567890
I need to take the 1st and 4th lines in the above... (5 Replies)
Hi iam new to shell programming. I would like to ask one dought abt the file
handling in unix.
Iam having a file1 as follows:
ASDERFCX1234567890123456
POIUYTRE0098765432123456
BVCXCVBN0955644411111111
File2
ASDERFCX1234567890123456 kill@abc.com ... (8 Replies)
Using shell scripting, implement ‘scan.sh' that scans the file system recursively starting
from current working directory and generates the file ‘index.txt' that contains a line for each
file (or directory) with following fields in tab separated format:
1. The full path of the directory... (1 Reply)
Hi,
I am using two files - one file contains list of service name , other file contains commands for each of these service name .
I have to read each service name and check this string in 1.cfg file , if it exists , then i have to read another file (commands file ) and take the string and... (2 Replies)
Discussion started by: santhoshks
2 Replies
LEARN ABOUT DEBIAN
mhddfs
mhddfs(1) General Commands Manual mhddfs(1)NAME
mhddfs - The driver combines a several mount points into the single one.
SYNOPSIS
mhddfs /dir1,/dir2[,/path/to/dir3] /path/to/mount [-o options]
mhddfs /dir1 dir2,dir3 /mount/point [-o options]
...
fusermount -u /path/to/mount
fstab record example:
mhddfs#/path/to/dir1,/path/to/dir2 /mnt/point fuse defaults 0 0
mhddfs#/dir1,/dir2,/dir3 /mnt fuse logfile=/var/log/mhddfs.log 0 0
OPTIONS
with an -o option1,option2... you can specify some additional options:
logfile=/path/to/file.log
specify a file that will contain debug information.
loglevel=x
0 - debug messages
1 - info messages
2 - standard (default) messages
mlimit=size[m|k|g]
a free space size threshold If a drive has the free space less than the threshold specifed then another drive will be choosen while creat-
ing a new file. If all the drives have free space less than the threshold specified then a drive containing most free space will be
choosen.
Default value is 4G, minimum value is 100M.
This option accepts suffixes:
[mM] - megabytes
[gG] - gigabytes
[kK] - kilobytes
For an information about the additional options see output of:
mhddfs -h
DESCRIPTION
The file system allows to unite a several mount points (or directories) to the single one. So a one big filesystem is simulated and this
makes it possible to combine a several hard drives or network file systems. This system is like unionfs but it can choose a drive with the
most of free space, and move the data between drives transparently for the applications.
While writing files they are written to a 1st hdd until the hdd has the free space (see mlimit option), then they are written on a 2nd hdd,
then to 3rd etc.
df will show a total statistics of all filesystems like there is a big one hdd.
If an overflow arises while writing to the hdd1 then a file content already written will be transferred to a hdd containing enough of free
space for a file. The transferring is processed on-the-fly, fully transparent for the application that is writing. So this behaviour simu-
lates a big file system.
WARNINGS
The filesystems are combined must provide a possibility to get their parameters correctly (e.g. size of free space). Otherwise the writing
failure can occur (but data consistency will be ok anyway). For example it is a bad idea to combine a several sshfs systems together.
Please read FUSE documentation for a further conception.
COPYRIGHT
Distributed under GPLv3
Copyright (C) 2008 Dmitry E. Oboukhov <dimka@avanto.org>
February 2008 mhddfs(1)