08-24-2017
i am from amrita college of engineering,
course unix
professor ashwin
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1. Shell Programming and Scripting
Hi,
iam having the file as follows:
ABCDEFGH|0987654321234567
ABCDEFGH|0987654321234523
ABCDEFGH|0987654321234556
ABCDEFGH|0987654321234545
POIUYTRE|1234567890890678
POIUYTRE|1209867757352567
POIUYTRE|5463879088797131
POIUYTRE|5468980091344456
pls provide me the split command
... (14 Replies)
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2. Shell Programming and Scripting
I want to compare some files.
say iam having 2 sets of files ,each is having some 10 files.
ie,
file1
1a.txt
1b.txt
1c.txt
...
file2
2a.txt
2b.txt
2c.txt
...
i need to read line by line of this files parralley..
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3. Shell Programming and Scripting
Hi,
Iam having file1 as follows:
ERTYUIOU|1234567689089767688
FDHJHKJH|6817738971783893499
JFKDKLLUI|9080986766433498444
FILE2
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4. Shell Programming and Scripting
Hi,
I am looking for a PDF or an e-book which can show in details how to do Shell Scripting or Programming. Can anybody provide me with a link to such a tutorial? I have downloaded some tutorials but they show only basics and not give any in-depth study material.
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5. Infrastructure Monitoring
# set date to your spec: this is month/day/yr/hr/min/sec:
sysdate=`date '+%m/%d/%Y-%H:%M:%S'`
# get the last line before the history file is modified
tail -1 /tmp/hosthistory.txt |while read lastdate mydevices
do
echo $lastdate
echo $mydevices
done
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6. Shell Programming and Scripting
I was trying out some new series to get it print
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
and the seond one is
1
2 2
3 3 3
4 4 4 4
5 5 5 5 5
but was unable to get the result. (5 Replies)
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7. Shell Programming and Scripting
hi,
i am trying this while loop and i only want that it should only read food as pizza....no other entry should be taken here.
#!/usr/bin/perl -w
$food = " ";
while ( $food ne 'pizza' )
{
print 'enter what you had last night: ';
chomp ($food = <STDIN>);
#print $food ;
}
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8. UNIX and Linux Applications
Hi,
We need to compare a text file File1.txt and config file File2.txt in a way that it checks if the content of File1.txt exists between the range mentioned in File2.cfg.
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9. UNIX for Dummies Questions & Answers
sxsaaas (3 Replies)
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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)