I'm puzzled by this one. I hope you can explain it to me.
I have a ksh shell script that gzips a file among other things. This works perfectly fine when the script is manually run through a shell. However, when the same script is run through cron, it does everything correctly, but it will... (2 Replies)
Hello expert,
What I want is to determine whether the script is called from CRON or it is executed interactively?
I tried the following but no luck:
#!/bin/ksh
cronID=`pgrep -x cron`
GPID=`ps -ef -o ppid,pid | grep " $PPID$" | awk '{print $1}'`
if ; then
echo I am being run... (15 Replies)
guys
i have written a very simple script .it runs manually well.
but when i put it in cron,it doesn't give the desired output.
script looks like this:
#! /usr/bin/sh
#script for loading data in table using ctl file/Abhijeet K/08.07.2006
/svm_wl1/. .profile
cd... (5 Replies)
Hello,
I know little about shell scripting and creating a script, and worked fine in the command line. But not work in the cron. Below you could see the script
#!/bin/sh
LOGFILE=/home/transfield/mou/test.log
# Find yesterday Date and copy files
TODAY=$(date --date= +%F)
YESTERDAY=$(date... (4 Replies)
Hello,
I am facing a very strange problem when I run my script manuallu ./Fetchcode which is using to connect with MKS integrity from linux end it workks fine but when I run it from cron it doesn't work.Can someone help me
1) How could I check my script when it is running from cron like... (3 Replies)
Hi All,
I am calling a series of shell scripts via CRON so everything is running as root. However, in my error log file I am seeing the following errors. Please can anyone offer any advise as to the possible causes and solution to prevent the errors from appearing.
The Error 1227 seems to... (2 Replies)
Help. My script is working fine when executed manually but the cron seems not to catch up the command when registered.
The script is as follow:
#!/bin/sh
for file in file_1.txt file_2.txt file_3.txt
do
awk '{ print "0" }' $file > tmp.tmp
mv tmp.tmp $file
done
And the cron... (2 Replies)
Hi,
My shell script not getting called through cron job.
The same works fine when executed manually.
I tried to generate logs to find if the scripts has some errors related to path using following command- trying to execute .sh file every 5 mins:
*/5 * * * * /home/myfolder/abc.sh... (17 Replies)
Hi, I've got a Bash backup script I'm trying to run on a directory via a cron job nightly. If I ssh in and run the script manually it works flawlessly. If I set up the cron to run evertything is totally messed up I don't even know where to begin.
Basically the path structure is
... (6 Replies)
Discussion started by: wyclef
6 Replies
LEARN ABOUT POSIX
gmtime_r
GMTIME(P) POSIX Programmer's Manual GMTIME(P)
NAME
gmtime, gmtime_r - convert a time value to a broken-down UTC time
SYNOPSIS
#include <time.h>
struct tm *gmtime(const time_t *timer);
struct tm *gmtime_r(const time_t *restrict timer,
struct tm *restrict result);
DESCRIPTION
For gmtime(): The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the require-
ments described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 defers to the ISO C standard.
The gmtime() function shall convert the time in seconds since the Epoch pointed to by timer into a broken-down time, expressed as Coordi-
nated Universal Time (UTC).
The relationship between a time in seconds since the Epoch used as an argument to gmtime() and the tm structure (defined in the <time.h>
header) is that the result shall be as specified in the expression given in the definition of seconds since the Epoch (see the Base Defini-
tions volume of IEEE Std 1003.1-2001, Section 4.14, Seconds Since the Epoch), where the names in the structure and in the expression corre-
spond.
The same relationship shall apply for gmtime_r().
The gmtime() function need not be reentrant. A function that is not required to be reentrant is not required to be thread-safe.
The asctime(), ctime(), gmtime(), and localtime() functions shall return values in one of two static objects: a broken-down time structure
and an array of type char. Execution of any of the functions may overwrite the information returned in either of these objects by any of
the other functions.
The gmtime_r() function shall convert the time in seconds since the Epoch pointed to by timer into a broken-down time expressed as Coordi-
nated Universal Time (UTC). The broken-down time is stored in the structure referred to by result. The gmtime_r() function shall also
return the address of the same structure.
RETURN VALUE
Upon successful completion, the gmtime() function shall return a pointer to a struct tm. If an error is detected, gmtime() shall return a
null pointer and set errno to indicate the error.
Upon successful completion, gmtime_r() shall return the address of the structure pointed to by the argument result. If an error is
detected, gmtime_r() shall return a null pointer.
ERRORS
The gmtime() function shall fail if:
EOVERFLOW
The result cannot be represented.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
The gmtime_r() function is thread-safe and returns values in a user-supplied buffer instead of possibly using a static data area that may
be overwritten by each call.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
asctime() , clock() , ctime() , difftime() , localtime() , mktime() , strftime() , strptime() , time() , utime() , the Base Definitions
volume of IEEE Std 1003.1-2001, <time.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE
and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
online at http://www.opengroup.org/unix/online.html .
IEEE /The Open Group 2003 GMTIME(P)