Hi,
I'm a beginner in scripting and I recently wrote a bash script that would've worked fine until I realized it needed to be written in csh. Could someone please show me how to correctly change the syntax from bash to csh in this script? Any help will be greatly appreciated. I can provide more... (4 Replies)
hi,
i have a script that runs on bash and would like to run it on a machine that has csh and bash. the default setting on that machine is csh. i dont want to change my code to run it with a csh shell. is there any way i can run the script (written in bash) on this machine? in other words is there... (3 Replies)
I am working on a script that checks two arguments at the command line. The first argument is a search pattern, the second can be a file or a directory, if it is a file a second script is called that checks it for the search pattern. If the second argument is a directory, it checks for the search... (5 Replies)
How can I change the cron entries only for ABC and XYZ from dosomething_1.0.sh to nowchanged_2.0 using a bash script ?
Any help will be appreciated.
#
# ABC
00,05,10,15,20,25,30,35,40,45,50,55 * * * * /mydir/dosomething_1.0.sh 1>/dev/null 2>&1
#
#
##
# DEF... (4 Replies)
Hi,
I have a csh:
set NODES = `cat $HOST_FILE`
set NODELIST = $TMPDIR/namd2.nodelist
echo group main >! $NODELIST
foreach node ( $NODES )
echo host $node >> $NODELIST
end
@ NUMPROCS = 2 * $#NODES
I am very frustrated to translate it to bash:
NODES = `cat... (3 Replies)
Hi,
i am a beginner in ubuntu. my default shell is bash. everytime i try to change the shell with command "csh", i get a message (probably an error message). after i get into c-shell, when i try to execute a c shellscript, then it showed the same message. any idea about what is this about or any... (1 Reply)
I have the following script set up and working properly in bash. It basically copies a set of lines which match "AS1100002" from one file and replaces the same lines in another file.
awk -vN=AS1100002* 'NR==FNR { if($1 ~ N)K=$0; next }
{ if($1 in K) $0=K; print }' $datadir/file1... (7 Replies)
I am trying to change dates in a bash script.
I have a start time and an endtime and want to increment the times. Basically
the month and day have to be incremented in a loop to create two strings, stm and
etm defining the start and end times.
stm="2014-05-13T00:00:00"... (4 Replies)
Discussion started by: novilatte
4 Replies
LEARN ABOUT OPENDARWIN
sleep
SLEEP(1) BSD General Commands Manual SLEEP(1)NAME
sleep -- suspend execution for an interval of time
SYNOPSIS
sleep seconds
DESCRIPTION
The sleep command suspends execution for a minimum of seconds.
If the sleep command receives a signal, it takes the standard action.
IMPLEMENTATION NOTES
The SIGALRM signal is not handled specially by this implementation.
The sleep command will accept and honor a non-integer number of specified seconds (with a '.' character as a decimal point). This is a non-
portable extension, and its use will nearly guarantee that a shell script will not execute properly on another system.
EXAMPLES
To schedule the execution of a command for x number seconds later (with csh(1)):
(sleep 1800; sh command_file >& errors)&
This incantation would wait a half hour before running the script command_file. (See the at(1) utility.)
To reiteratively run a command (with the csh(1)):
while (1)
if (! -r zzz.rawdata) then
sleep 300
else
foreach i (`ls *.rawdata`)
sleep 70
awk -f collapse_data $i >> results
end
break
endif
end
The scenario for a script such as this might be: a program currently running is taking longer than expected to process a series of files, and
it would be nice to have another program start processing the files created by the first program as soon as it is finished (when zzz.rawdata
is created). The script checks every five minutes for the file zzz.rawdata, when the file is found, then another portion processing is done
courteously by sleeping for 70 seconds in between each awk job.
DIAGNOSTICS
The sleep utility exits 0 on success, and >0 if an error occurs.
SEE ALSO nanosleep(2), sleep(3)STANDARDS
The sleep command is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.
HISTORY
A sleep command appeared in Version 4 AT&T UNIX.
BSD April 18, 1994 BSD
09-05-2013
