File is not empty? Post: 50985

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

empty file in hp-ux

Hi, I need your help. How can I create an empty filename with a specific size, in hp-ux? Regards, Mizi

2. Shell Programming and Scripting

How to empty a file(already created)

What is the command to empty an already existing file. please provide me.i used Touch cmd to empty the file.but it changing the time only.

3. UNIX for Dummies Questions & Answers

how to find empty folders without using -empty

hi all: my solaris FIND does not support find myFolder -type d -empty how can i find the empty folders? thanks!

4. UNIX for Dummies Questions & Answers

Trying to empty file using > but the file size increasing when next append

AIX 5.3 / KSH I have a Java application which creates a log file a.log. I have a KSH script which does the following action cp a.log /directory2/b.log > a.log After this the file size goes to 0 as per "ls -l" Then next time when the application writes into this file, the file size...

5. Shell Programming and Scripting

how to see if the file is empty or not?

hi how can I determine, if a file is empty or not?I am using read line clause. The script should be like: while read line do if(file is empty) then; ...... done < $blacklist

6. UNIX for Dummies Questions & Answers

Getting same exit status for empty and non empty file

Hi All, I am checking for a empty input file to do some further action , but I am getting exit status 0 in both the cases , for empty and non empty file both. The value of $? is coming 0 in if part also and else part too. #!/bin/ksh if ]; then echo "data" # exit 0 echo "$?" else...

7. Shell Programming and Scripting

while file is empty

how can i use while loop ? while file is empty do.... if not empty do ..... in bash

8. Shell Programming and Scripting

Empty out the file

Hi All, I have a piece of perl code in which I DON'T want to delete a file rather empty out the contents, here is the code - if ( unlink("$opt_b") == 1 ) { print_log( "$opt_b deleted", 1 ); }else { print_log( "Could not delete $opt_b:$!", 1 ); ...

9. Shell Programming and Scripting

if/else with an empty file...

Hi there, I'm just starting out with shell scripting and I'm trying to make a test where the script will basically run yum check-update to find out if the server has any available and if it does it e-mails me but if not it will just stop there. I have it working if there are actually...

10. Shell Programming and Scripting

awk to reformat output if input file is empty, but not if file has data in it

The below awk improved bu @MadeInGermany, works great as long as the input file has data in it in the below format: input chrX 25031028 25031925 chrX:25031028-25031925 ARX 631 18 chrX 25031028 25031925 chrX:25031028-25031925 ARX 632 14...

LEARN ABOUT SUNOS

grpck

pwck(1M)						  System Administration Commands						  pwck(1M)

NAME

       pwck, grpck - password/group file checkers

SYNOPSIS

       /usr/sbin/pwck [filename]

       /usr/sbin/grpck [filename]

DESCRIPTION

       pwck  scans  the  password  file and notes any inconsistencies. The checks include validation of the number of fields, login name, user ID,
       group ID, and whether the login directory and the program-to-use-as-shell exist.  The default password file is /etc/passwd.

       grpck verifies all entries in the group file. This verification includes a check of the number of fields, group name, group ID, whether any
       login  names  belong  to  more  than  NGROUPS_MAX  groups,  and that all login names appear in the password file. The default group file is
       /etc/group.

       All messages regarding inconsistent entries  are  placed  on the stderr stream.

FILES

       /etc/group

       /etc/passwd

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       getpwent(3C), group(4), passwd(4), attributes(5)

DIAGNOSTICS

       Group entries in /etc/group with no login names are flagged.

       Group file 'filename' is empty

	   The /etc/passwd or /etc/group file is an empty file.

       cannot open file filename: No such file or directory

	   The /etc/passwd or /etc/group file does not exist.

NOTES

       If no filename argument is given,  grpck checks the local group file,  /etc/group, and also makes sure that all login names encountered	in
       the  checked  group  file are known to the system  getpwent(3C) routine.  This means that the login names may be supplied by a network name
       service.

SunOS 5.10							    20 Oct 2002 							  pwck(1M)

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

empty file in hp-ux

Discussion started by: Mizi

2. Shell Programming and Scripting

How to empty a file(already created)

Discussion started by: laknar

3. UNIX for Dummies Questions & Answers

how to find empty folders without using -empty

Discussion started by: lasse

4. UNIX for Dummies Questions & Answers

Trying to empty file using > but the file size increasing when next append

Discussion started by: firdousamir