Don't think sed is capable of doing this, this awk script (nawk if you on Solaris) should do what you ask (just change the S and E variables to match your range):
Hi,
I know I can use touch and find's "! -newer" option to list files that are older than a specific time, but what is a good way to get a list of files that are over 12 hours old?
The log pruner will run throughout the day, twice an hour. So I can't easily use a cronjob touch command to generate... (1 Reply)
I'm looking to pull the last 24 hours of a log file.
Here's what I've got so far:
yesterday=$(TZ=$TZ+24 date +"%b %e %H:%M")
today=$(date +"%b %e %H:%M")
echo $yesterday $today
grep -E "^$yesterday|^$today" /var/adm/syslog/syslog.log
But that pulls everything from $yesterday from... (1 Reply)
Hi Frens,
I want to list some files from a directory, which contains "DONE" in their name, i am receiving files every minute. In this i want to list all the files which are newer than 6 hours but older than 3 hours, of current time
i dont want my list to contain the latest files which are ... (4 Replies)
Hi,
Good Afternoon!
I am writing this script on "sh" and have Variables as below.
#Time in hours ex: 09
JobTime=`echo $StartTime |awk '{print $2}'|cut -f1 -d':'`
SystemHours=`date +%H`
How can go 4 hours back for each variable in a day?
Another Question?
JobStat=`dsjob -report... (5 Replies)
stupid question im sure, but its frustrating
My cron jobs are off by 5 hours. My system time is right but all of my cron jobs are running approximately 5 hours late. Any idea why? (4 Replies)
I have a file that should cover a days worth of stats, at the beginning of each 15 minute report I have a unique header that looks like the below example. The "0000" and "0015" will change in the header line to show which 15 Minute interval the report is covering and of course from day to day the... (7 Replies)
Hi ,
We have around 22 logs , each has different entries. I have to automate this using shell script. The ideas which am sharing is given below
1) We use only TAIL -100 <location and name of the log> Command to check the logs.
2) We want to check whether the log was updated before 24... (13 Replies)
I want to parse a log file which i am grepping root user connection but is showing whole day and previous day detail as well.
First i want to see last 2 hours log file then after that i want to search particular string. Lets suppose right now its 5:00PM, So i want to see the log of 3:00PM to... (6 Replies)
Discussion started by: learnbash
6 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS --debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.8.4 2005-05-03 SHELL-QUOTE(1p)