checking file existence Post: 302104211

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Checking the existence of a file..

Hi, I am trying to check for the existence of a file using the 'test' and the file existence options. When trying to check for a file with a space in between e.g 'Team List', it gives the following error. learn1: line 3: test: `Team: binary operator expected I am pasting my code below as...

2. Shell Programming and Scripting

Checking for existence of a flat file in UNIX !

Hi All, I have a requirement where in i need to check for existence of a file and later execute some pmcmd commands related to informatica. I tried many ways but was unsuccessful could you please throw some light. Below are the sample codes i wrote. Example 1: #!/bin/ksh...

3. Shell Programming and Scripting

Checking Multiple file existence

Hi, I want to check multiple files exist or not in a single if statement in korn Shell:confused:. Please help me Thanks

4. Shell Programming and Scripting

Multiple file existence and checking file size

I want to check the files in particular directory are more that 0 Bytes i.e, Non zero byte file. The script should print a msg if all the files in that directory are empty( 0 Byte).

5. Shell Programming and Scripting

Checking the existence of a file before getting last modified

Hi, I am trying to check the existence of a file, from a list of possible filenames: status-A status-B status-C before retrieving the last modified datetime using ls, I want to check it exists or ls will throw an error. So I have tried this: if ; then ls status-* fi But the if...

6. Shell Programming and Scripting

checking the file existence using ssh

Hi Can any body say me the reason for below error ssh -o 'StrictHostKeyChecking no' user@client ' && print "1"' I am getting error as "Missing ]":wall:

7. Shell Programming and Scripting

Checking existence of file using awk

Hi, I need to check whether a particular file exists ot not using awk. Can anyone help me please? For Example:script that i am using: awk '{filename =$NF; rc=(system("test -r filename")) print $rc;}' "$1" is not working. Here I am passing a text file as input whose last word contains a...

8. Shell Programming and Scripting

Checking file existence along with condition

Hi am trying to write a script which find the existence of a file from a find command output and perform a task if the file exists. Help me out with the correct syntax . Am trying with the following one but unable to get the output. if then <some tasks> else echo "file not exists" fi

9. Shell Programming and Scripting

Checking for the file existence

Hi, I have written a script to validate the data file by referreing to the configurtion file. And moving the validated good records and bad records into HDFS. Suppose after 15 mins if i receive one more data fie,then after validation the good and bad records shold be stored in hadoop with the...

10. Shell Programming and Scripting

Command script for checking a file existence

Hello, I have a directory where sometimes appear a certain file name - and I'd like to be notified by email when that happens... so what command or script I may use? e.g. if there's a file named "adam" in the directory named "dir1" then send a mail to "abc@abc.com".. it needs to permanently...

LEARN ABOUT DEBIAN

dpns_accessr

DPNS_ACCESSR(3) 					      DPNS Library Functions						   DPNS_ACCESSR(3)

NAME

       dpns_accessr - check existence/accessibility of a file replica

SYNOPSIS

       Under Unix:
       #include <sys/types.h>
       #include <unistd.h>
       #include "dpns_api.h"

       Under Windows/NT:
       #include <sys/types.h>
       #define R_OK 4
       #define W_OK 2
       #define X_OK 1
       #define F_OK 0
       #include "dpns_api.h"

       int dpns_accessr (const char *sfn, int amode);

DESCRIPTION

       dpns_accessr  checks in the name server database the existence or the accessibility of the file replica sfn according to the bit pattern in
       amode using the real user ID.

       sfn    is either the Site URL or the Physical File Name for the replica.

       amode  the bit pattern is built by an OR of the constants defined in <unistd.h> under Unix or to be explicitly defined under Windows/NT:

	      R_OK   test for read permission

	      W_OK   test for write permission

	      X_OK   test for search/execute permission

	      F_OK   test for existence of the file.

RETURN VALUE

       This routine returns 0 if the operation was successful or -1 if the operation failed. In the latter case, serrno is set appropriately.

ERRORS

       ENOENT	    The named file does not exist.

       EACCES	    Search permission is denied on a component of the parent file prefix, the specified access to the file  itself  is	denied	or
		    W_OK is requested but the replica status is not 'P' (cannot modify an existing file).

       EFAULT	    sfn is a NULL pointer.

       EINVAL	    amode is invalid.

       ENAMETOOLONG The length of sfn exceeds CA_MAXSFNLEN.

       SENOSHOST    Host unknown.

       SENOSSERV    Service unknown.

       SECOMERR     Communication error.

       ENSNACT	    Name server is not running or is being shutdown.

SEE ALSO

       Castor_limits(4), dpns_chmod(3), dpns_statr(3)

AUTHOR

       LCG Grid Deployment Team

DPNS
					       $Date: 2010-04-05 09:51:26 +0200 (Mon, 05 Apr 2010) $				   DPNS_ACCESSR(3)