10 More Discussions You Might Find Interesting
1. Programming
hi all,
i have made a shell script and it runs until it reaches the if statement, doesn't the ! mean only if the command fails it will echo me that message and then exit
can anyone please help me what is wrong with my code?
many thanks,
rob
#!/bin/bash
echo "is this archive... (10 Replies)
Discussion started by: robertkwild
10 Replies
2. UNIX for Dummies Questions & Answers
Hi Unix Gurus,
I would like to rename several files in a Unix Directory . The filenames can have more than 1 underscore ( _ ) and the last underscore is always followed by a date in the format mmddyyyy. The Extension of the files can be .txt or .pdf or .xls etc and is case insensitive ie... (1 Reply)
Discussion started by: pchegoor
1 Replies
3. Programming
Hey so I've written a program and it crashes every time I run it. I tried placing breakpoints to see what was going but to my surprise they do not work! I've placed them anywhere and they do not stop the execution of the program.
In fact if I add code and hit rebuild it doesn't even build that... (1 Reply)
Discussion started by: Cambria
1 Replies
4. UNIX for Dummies Questions & Answers
when i started booting linux ,after sometime both the mouse and the keyboard are getting freeze and wont respond(also the system gets hanged and all the process running dont go forward) ,nothing seem to work.
Keeping in mind that it will work after sometime ,i waited for one hour also ,but... (1 Reply)
Discussion started by: sanjay.login
1 Replies
5. Shell Programming and Scripting
Hi.
I´ve a script that should substitude the 8th line in a file called xxx.num6.
The "xxx" is set by an array filled with this command:
j=0
for Par in *.sys ; do
Par=`echo $Par | sed 's/\(.*\).sys/\1/'` ;
Par2="$Par" ; echo "${Par2}"
j=$((j + 1));
done
Now i try... (0 Replies)
Discussion started by: Lock3
0 Replies
6. UNIX for Dummies Questions & Answers
I have a list of dates in the following format: mm/dd/yyyy and want to change these to the MySQL standard format: yyyy-mm-dd.
The dates in the original file may or may not be zero padded, so April is sometimes "04" and other times simply "4".
This is what I use to change the format:
sed -i '' -e... (2 Replies)
Discussion started by: figaro
2 Replies
7. Shell Programming and Scripting
I have a comma delimited log file which has the date as MM/DD/YY in the 2nd column, and HH:MM:SS in the 3rd column.
I need to change the date format to YYYY-MM-DD and merge it with the the time HH:MM:SS. How will I got about this?
Sample input
02/27/09,23:52:31
02/27/09,23:52:52... (3 Replies)
Discussion started by: hazno
3 Replies
8. Shell Programming and Scripting
Hallo,
I need to test a String (a special ip number-string).
So I want to run that:
ipadress=172.0.0.0
# for debugging:
echo $ipadress | egrep -e '172\.?\.??\.??$'
# the test that doesnt work
if test -z `echo $ipadress | egrep -e '172\.?\.??\.??$'` != ""
then
echo "match"
else... (1 Reply)
Discussion started by: wiseguy
1 Replies
9. Shell Programming and Scripting
I'm am able to format the date in the unix prompt using NOW=$(date +"%d%m%y"). However, when i put the same format into a shell script, it errors out with the followign.
sintax error on line 4: `NOW=$' unexpected.
#!/bin/ksh
EXP_LOC=/u02/oradata/exports
NOW=$(date +"%d%m%y")
... (8 Replies)
Discussion started by: mrx1350
8 Replies
10. Filesystems, Disks and Memory
Alright.
My neighbor kid brings me his iBook and says nothing works. He decided to move the file system to his likeness and that semed to create the problems. Now he doesn't have access rights to his home.
I have run fsck over and over again and I keep getting ** fs modified **
I have also... (0 Replies)
Discussion started by: maxwell
0 Replies
cron(8) System Manager's Manual cron(8)
NAME
cron - The system clock daemon
SYNOPSIS
/usr/sbin/cron
DESCRIPTION
The cron daemon runs shell commands at specified dates and times. Commands that are to run according to a regular or periodic schedule are
found within the crontab files. Commands that are to run once only are found within the at files. You submit crontab and at file entries
by using the crontab and at commands. Because the cron process exits only when killed or when the system stops, only one cron daemon
should exist on the system at any given time. Normally, you start the cron daemon from within a run command file.
During process initialization and when cron detects a change, it examines the crontab and at files. This strategy reduces the overhead of
checking for new or changed files at regularly scheduled intervals. The cron command creates a log of its activities. The cron daemon
must be started from the system startup scripts because it must begin execution without a login user ID set. The cron daemon starts each
job with the following process attributes stored with the job by the invoking process: Login user ID Effective and real user IDs Effective
and real group IDs Supplementary groups
It also establishes the following attributes from the authentication profile of the account associated with the login user ID of the invok-
ing process: Audit control and disposition masks Kernel authorizations
DIAGNOSTICS
The at and batch programs will refuse to accept jobs submitted from processes whose login user ID is different from the real user ID.
FILES
Specifies the command path. Main cron directory Directory containing the crontab files. List of allowed users. List of denied users His-
tory information for cron Queue description file for at, batch, and cron
RELATED INFORMATION
Commands: at(1), crontab(1), rc0(8), rc2(8), rc3(8)
Files: queuedefs(4) delim off
cron(8)