I use grep all the time. Don't have a problem understanding it. But I am looking at a script that uses 'eprep'. Basically we have something that uses ssh to log into a remote host and execute a "df -h" and emails us. We use that to check space on remote machines. Lately I have noticed the 'egrep' command isn't returning anything. Someone else who is no longer around wrote this. I don't understand what the statement is doing. On one machine it returns what I would expect, on others, it returns nothing. On a working machine:
Machine that doesn't work:
If I leave off the egrep, I do see the output of the df command, so I am sucessfully logging into the remote machine.
Hi,
i am using egrep -f. The file with the expressions is very big and if i make the file a lot smaller, it works fine. Only if i use the original file, witch has about 20.000 lines it doesn't seem to work. Is the file to big, or do i need more patience??
my command is:
egrep -f... (2 Replies)
I have a file called alert.log containing the following:
WARNING: received KRVX_OPER_CANNOT_SUPPORT
knlldmm: gdbnm=CROOP
knlldmm: objn=23793
knlldmm: objv=1
knlldmm: scn=5189816456
knllgobjinfo: MISSING Streams multi-version data dictionary!!!
knlldmm: gdbnm=FDROP
knlldmm: objn=49385... (9 Replies)
Howdie everyone...
I have a shell script RemoveFiles.sh
Inside this file, it only has two commands as below:
rm -f ../../reportToday/temp/*
rm -f ../../report/*
My problem is that when i execute this script, nothing happened. Files remained unremoved. I don't see any error message as it... (2 Replies)
Hi I've been searching google and have not found what egrep -c means. Does anyone know where I can get a cheat sheet or what that -c means?
thanks,
Linda (2 Replies)
Hi Guys,
we have a shell script which basically query the Database which retrieves huge data and use the data with "egrep" .
Now there is some data which contains characters like "abc)" and the same is used like below :
"egrep (.+\|GDPRAB16\|GDPR/11702 96 abc)\|$ temp.txt"
now while... (7 Replies)
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)
Hi,
I am wondering if it's possible to link multiple patterns with egrep.
Here here is what I am doing :
grep -v ";;" | grep -v ARC_TIME | grep -v \* | grep -v STAS0 Can I do all of this by invoking egrep just once ?
Thanks (4 Replies)
Hi,
I need to search for a exact word in a file and I have a list of allowable values in a list file. I search something like this using egrep -f option:
>egrep -f list.txt data.txt
New
New York
NewYork
>
list.txt file has the allowable value for search and this file can be edited to... (5 Replies)
My script work on Linux but not work in sun os.
my script.
logFiles="sentLog1.log sentLog2.log"
intial_time="0 0"
logLocation="/usr/local/tomcat/logs/"
sleepTime=600
failMessage=":: $(tput bold)Log not update$(tput rmso) = "
successMessage="OK"
arr=($logFiles)... (7 Replies)
hi all. and sorry for the random question, but this sparkled a raging flame-war at work and i want more points of view
situation
a router, with linux of some sort,
dhcp client requesting for ip in wan1 (as usual with wan ports)
dhcp server listening in lan1, and assigning ip (as usual... (9 Replies)
Discussion started by: broli
9 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)