05-31-2012
Do not understand.
Quote:
How do you grep the lines logged in 10 min?
What do you mean by 10 minutes?
Also, with only two lines in a file, hard to understand what you want selected.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I have a task where I need to code a shell script to extract a 10 min range (10 min from now until now) extract of a log file.
I taught I could simply use a command that would say something like Start=date - 10 min but I didn't find anything. Looks like the only solution would have to code a... (3 Replies)
Discussion started by: Browser_ice
3 Replies
2. Shell Programming and Scripting
Hi,
I have log file like this:
i want grep the log file without blank lines in column 4. So the file is become like this :
What is the command?
please help me. (1 Reply)
Discussion started by: justbow
1 Replies
3. Shell Programming and Scripting
I need help trying to grep for a error in log file for only last 15 min.
example
under /var/adm/messages i need to grep for "error 102" but only if it occured in last 15 mins?
Thanks (7 Replies)
Discussion started by: shehzad_m
7 Replies
4. Shell Programming and Scripting
For the first 4 users only that are currently logged in output their effective user id.
It's not important the order in which each logged in i just want to have the top 4.
Same question as here...... (0 Replies)
Discussion started by: whyatepies
0 Replies
5. Shell Programming and Scripting
Hi
i wrote script use it as watchdog ( i mean it check another program (pooya) whenever that was killed (closed or crashed) it run another script (pooya_start.sh) to start it,
this script work fine and do the job for me , i need help of an expert to tell me (exact command) how to change this... (8 Replies)
Discussion started by: pooyair
8 Replies
6. Shell Programming and Scripting
Hi guys!
I'm new to scripting and I need to write a script in awk.
Here is example of file on which I'm working
ATOM 4688 HG1 PRO A 322 18.080 59.680 137.020 1.00 0.00
ATOM 4689 HG2 PRO A 322 18.850 61.220 137.010 1.00 0.00
ATOM 4690 CD ... (18 Replies)
Discussion started by: grincz
18 Replies
7. Shell Programming and Scripting
I need to grep all lines for "yesterday" in /var/log/messages. Dates are in the format "YYYY-MM-DD". (5 Replies)
Discussion started by: Padmanabhan
5 Replies
8. Shell Programming and Scripting
I have a file with two ID columns followed by five columns of counts in fraction form. I'd like to print lines that have a count of at least 4 (so at least 4 in the numerator, e.g. 4/17) in at least one of the five columns.
Input file:
comp51820_c1_seq1 693 0/29 0/50 0/69 0/36 0/31... (6 Replies)
Discussion started by: pathunkathunk
6 Replies
9. Shell Programming and Scripting
You have a log file as attached in sample input with various operations and time taken by each of them. Write a script to find the min and max time taken for each operation. Sample output is attached.
Sample Input is given as below:
operation1,83621
operation2,72321
operation3,13288... (1 Reply)
Discussion started by: Chandan_Bose
1 Replies
10. UNIX for Beginners Questions & Answers
Hi guys,
Appreciate your help as I am stuck with searching the logs for last 30 minutes from the current time. Current time is time when you execute the script and it will search for <string> through the logs for last 30 minutes only and if <string> found then print those lines only.
The... (18 Replies)
Discussion started by: rockstar
18 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)