In your original code the problem is that you need a space between the first square bracket and variable name. Also the = is to assign not compare. Try
How can I perform size check of any character file(which switch)?
For example: I have to perform certain actions if file size is not zero. How can I do that?
Is this syntax fine?
if test ! -z $filename
then
fi (2 Replies)
Hi,
I'm trying to write a bit of code that will check if a file exists and then archives the file
Im trying to use the following if statement without success..
if
then
mv filename archive/filename
else
echo "no filename exists"
fi
Should the file name be... (3 Replies)
Hi All,
If i run below copy command, it works absolutely fine,
/opt/csw/bin/scp axetlxyz01:/opt/data/test/QURIES* ./input
I want to make the above line better, by adding an IF statement, want to check if there is any file exists with name QURIES*.* then i need to copy that.
if
... (7 Replies)
I want to write a batch job (ksh) with the following requirement
we have file feeds coming to our system from other team,
if the file size is greater than expected then we dont need to process the file for the day
and need to archive the file and send email notification to the manager saying... (5 Replies)
if ; then
cp /tmp/testfolder/*.* ~/new/logs/
else
echo "No files today"
exit
fi
The problem is this doen't work when there is more than 1 file. Please tell me how to
take the latest file and check the size of the file in a directory (1 Reply)
I am trying to check whether two files are empty or not using below if condition but its checking for only one file
if ]
Again I tried
if && ]
Need your assistance (2 Replies)
Hello Guys,
I am trying scp few file within if statement, but getting error, can someone please help to understand, what mistake I am making ?
if && ] ;
then
echo " Files transferred to Log servers successfully. "
else
echo " One or more file transfer failed over... (10 Replies)
Discussion started by: UnknownGuy
10 Replies
LEARN ABOUT NETBSD
ucas
UCAS(9) BSD Kernel Developer's Manual UCAS(9)NAME
ucas -- atomic memory operations on user-space address
SYNOPSIS
#include <sys/systm.h>
int
ucas_ptr(volatile void *uptr, void *old, void *new, void *retp);
int
ucas_int(volatile int *uptr, int old, int new, int *retp);
DESCRIPTION
These functions provide compare-and-swap (CAS) functionality on user-space address.
Except that they can be safely used for the kernel to access user-space address, they are semantically equivalents of atomic_cas(3).
uptr The pointer to the variable. This should be a user-space pointer.
old The value to compare with the variable.
new The value to store to the variable.
retp The pointer to the memory to store the old value of the variable.
RETURN VALUES
On success, these functions return 0. In that case, the caller can consult the value returned via retp to check the result of the CAS opera-
tion. Otherwise, these functions return an appropriate errno(9) error code, typically EFAULT.
SEE ALSO atomic_cas(3), intro(9)BUGS
Conceptually, the retp argument of ucas_ptr() would be of void **. The current prototype is a compromise for usability.
BSD October 24, 2011 BSD