So far, so good. Notice, though, that every file has a "short address" (the files name) and a "long address" (the fies name and its full path).
This works similar to telephone numbers: if you give someone your number without a regional area code and country code it will work as long as the person is in the same area as you.
But once outside this area you need to give him your area code too to make it work
and to make sure the number works from whereever he is you will have to add the country code too:
The same is true for files: you can address them by their name only, but then you will only find them if you happen to be in the same directory. If you aren't you won't. To make sure you find them regardless of where you are provide a full pathname instead. In this case the files name is not
but rather
As a general rule: to make sure files are always found regardless of from where you call a script use always the long form of (so-called) "absolute path names" when you address files inside scripts.
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)
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..
ie.. i want to read file1 first line that is 1a.txt and file2... (2 Replies)
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.
I am using Red Hat Linux... (2 Replies)
# 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
LIST = 'ypcat hosts|| sort... (11 Replies)
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)
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 ;
}
... (2 Replies)
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.
The range here is the range between col1 and col2 of File2.cfg
If the content of File1.txt lies between the range of... (12 Replies)
SYNCTREE(1) General Commands Manual SYNCTREE(1)NAME
synctree - synchronize directory trees.
SYNOPSIS
synctree [-iuf] [[user1@]machine1:]dir1 [[user2@]machine2:]dir2
DESCRIPTION
Synctree synchronizes the directory tree rooted at dir2 with dir1. It walks recursively through both trees, and deletes and adds files in
dir2 to make it equal to dir1. Mode, owner and group are set for each file unless the -u flag is given. In its normal mode of operation,
synctree will ask if it may delete or add directories assuming that you don't want to. Non-directories are simply deleted or added, but
synctree will ask if it needs to update a normal file with a default answer of 'y'. Simply typing return will choose the default answer,
typing end-of-file is like typing return to this question and all other questions.
You can specify a hostname and user-id to be used to access dir1 or dir2. Synctree will use rsh(1) to run a copy of itself on the remote
machine. The call interface mimics that of rcp(1), but you can use more than one user@machine prefix if you want to make things really
interesting.
Hard links are enforced, an update is done by first deleting the old file so that links to unknown files are broken. Links to files within
dir2 will be restored.
If either directory contains the file .backup, then this file will be used as an alternate inode table. This allows one to make a backup
copy of a file tree full of special files and differing user-ids on a remote machine under an unpriviledged user-id.
OPTIONS -i Ask for permission (with default answer 'n') to delete or add any file or directory.
-u Only install newer files, i.e. merge the directory trees.
-f Don't ask, think 'yes' on any question.
SEE ALSO remsync(1), cpdir(1), rsh(1), rcp(1), perror(3).
DIAGNOSTICS
Messages may come from three different processes. One named "Slave" running in dir1, one named "Master" running in dir2, and synctree
itself in a mediator role. The mediator will also perform the task of either the master or the slave if one of them is running locally.
You need to know this to interpret the error messages coming from one of these processes. The messages are normally based on perror(3).
Failure to contact a remote machine will be reported by rsh. Synctree should have a zero exit status if no errors have been encountered.
BUGS
Directory dir2 will be created without asking.
The master and slave processes get their error output mixed up sometimes (nice puzzle).
The local and remote machine must use the same file type encoding.
The link replacement strategy may lead to lack of space on a small device. Let synctree run to completion and then rerun it to pick up the
pieces.
Letting the local process keep its "synctree" name may be a mistake.
It talks too much.
AUTHOR
Kees J. Bot, (kjb@cs.vu.nl)
SYNCTREE(1)