11-05-2008
Tests for existence of files/directories
Hi,
- The first question I have concerns a very fundamental aspect of a unix OS. Specifically, does unix treat everything as a file (ie a directory is just a type of file)?
- The reason I ask is that I am trying to determine which BASH unary operator I would to use to determine whether or not a directory exists. I am writing a BASH shell script where the user defines a directory in which data files will be placed. I would then like to check that the specified directory exists, and if not the script will error.
I am inclined to use the -d operator (file is a directory). Does this have an implicit test for existence?
The other choice I can think of is the -e operator (file exists). This would assume that unix treats directories as files.
I appreciate any help. Thank you.
Mike
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hi, I have a list of filenames and I want to verify if they all exist. I know "if filename" would do the trick but how do I go about a list of files? thanks (3 Replies)
Discussion started by: mpang_
3 Replies
2. Shell Programming and Scripting
Hi,
I have unix script on solaris 5.10.
I have to verify existence of 3 files in path and sleep for 1 hour.
I have tried for 1 file:
if
then
echo " File is found!"
sleep 3600
echo "time delayed"
fi
Please advice (6 Replies)
Discussion started by: ammu
6 Replies
3. Shell Programming and Scripting
Hello,
Can you please help me to see if log files exist in a directory?
I need to scan logs in different directories, so I am using an array to change dynamically.
I need help in the if test statement
dir=/logs/MSD
dir=/logs/UPD
countA=1
while (( countA <= ${#dir
} ))
do
cd ${dir}... (1 Reply)
Discussion started by: drbiloukos
1 Replies
4. UNIX for Dummies Questions & Answers
Hi,
Please help me, how to get all the direcotries, its sub directories and its sub directories recursively, need to exclude all the files in the process.
I wanted to disply using a unix command all the directories recursively excluding files.
I tried 'ls -FR' but that display files as... (3 Replies)
Discussion started by: pointers
3 Replies
5. Shell Programming and Scripting
Hi,
I am checking for existence of files with the same extensions
#! /usr/bin/ksh
txtfiles = '*.txt'
if
then
cp ${dirpath}/${txtfiles} ${dir2path}
fi
I am getting the following error
line 5: [: too many arguments for the if check condition (4 Replies)
Discussion started by: chen.sara
4 Replies
6. Shell Programming and Scripting
Can anyone come up with a unix command that lists
all the files, directories and sub-directories in the current directory
except a folder called log.?
Thank you in advance. (7 Replies)
Discussion started by: Manjunath B
7 Replies
7. Shell Programming and Scripting
Hi,
I have two files
file1:
ALEX
DANY
GARY
TOM
MARY
HARRIS
file2:
ALEX 3
ALEX 5
ALEX 0
ALEX 1
ALEX 0
DANY 2 (2 Replies)
Discussion started by: Diya123
2 Replies
8. Shell Programming and Scripting
Hi
I have a requirement to check whether the files exists, then it will call other steps in shell script.
I did
ls *.csv|wc -l
if
then checking the count of the files should be more than 1 then it will call other steps.
I am getting the error that too many arguements as there n... (13 Replies)
Discussion started by: cnrj
13 Replies
9. Shell Programming and Scripting
how can i move "dataName".sql.gz into a folder called 'database' and then move "$fileName".tar.gz * .htaccess into a folder called 'www' with the entire gzipped file being "$fileName".tar.gz? Is this doable or overly complex.
so
mydemo--2015-03-23-1500.tar.gz
> database
-... (5 Replies)
Discussion started by: wyclef
5 Replies
LEARN ABOUT ULTRIX
uucompact
uuaids(8c) uuaids(8c)
Name
uucompact, uumkspool, uurespool, uupoll - uucp utilities
Syntax
uucompact -ssystem
uumkspool system ...
uurespool [ -t# ]
uupoll system ...
Description
All of the commands are located in
The command compacts uucp system spool directories and associated subdirectories. If system is ALL, then all existing uucp system spool
directories are compacted. Otherwise, only the specified system spool directory is compacted. If no system is specified, is compacted.
If is stopped before it is finished, it can be restarted without reprocessing directories. The command continues processing where it left
off during it's previous instantiation.
The command makes a per system spool directory and associated subdirectories for each of the specified systems. For example, if system is
mk3 and if the local system name is penny, the following directories are created:
/usr/spool/uucp/sys/mk3
/usr/spool/uucp/sys/mk3/C.
/usr/spool/uucp/sys/mk3/X.
/usr/spool/uucp/sys/mk3/D.
/usr/spool/uucp/sys/mk3/D.penny
/usr/spool/uucp/sys/mk3/D.penny
The command moves files from old spool directories to new spool directories. Because the structure of the spool directories has changed
from older versions of it is necessary to respool old spooled files to new spool directories in at least two instances:
o When installing the current version of
o When creating a new system spool directory for each system.
In the latter case, it is necessary to move files from to the new spool directories. To ease this task, moves files that have been spooled
in one of 4 formats and respools them under the new spooling structure. The format is specified by the -t# option, where the number sign
(#) can be any one of the following:
o Original spool - All files are in
o Split spool - Contains the subdirectories
o Modified split spool - Contains all subdirectories listed in split spool, and
o Used when a new system directory has been created and spool files must be moved from the DEFAULT directory to the new system directory.
The command forces a connect attempt to the named systems even if recent attempts have failed, but not if the file prohibits the call. For
example, the file will prohibit the call if it is the wrong time of day. Thus, the should be monitored for messages about the connection.
Files
Spool directory
Logfile
See Also
mail(1), uucp(1c), uux(1c)
uuaids(8c)