Hi...
i just want to write a script for the follwing command "display status" and the normal output is...
AN100> display status
12.13.2006 12:03:25 AN-2000-1 CC NOT PRESENT 16.50.80.49
status: Status for PACKET GLI A in the TOP / LEFT shelf of frame 0:
status: The current active LAN is... (5 Replies)
Hi all;
I'm stuck with this simple awk script,i need to group the lines which the position of 28 length 3 that contains "688" into 1 group and other than "688" into another group. My problem is the script only read other than "688" and ignores the lines which contains "688".
The file look... (2 Replies)
Hi Guys,
I just wanted to print all the lines execpt 1st and 3rd line. For that i wrote a awk command,
awk 'NR != 1 || NR != 3 {print $0}' c.out
the command is working if i give an equal to instead of not equal to.
In the case of not equal to, it gives me the entire file.
Can you... (18 Replies)
Hi, I need little help with awk's if condition statement. I have following code:
$ ssh myRemotehost 'ps ww -fu tomcat ' | awk ' { if ($1 == "tomcat") print "tomcat (pid " $2 ") is running... "; else print "tomcat stopped or dead" }'
Prints:
tomcat stopped or dead
tomcat (pid 12345) is... (6 Replies)
Hello experts,
I'm stuck with this script for three days now. Here's what i need.
I need to split a large delimited (,) file into 2 files based on the value present in the last field.
Samp: Something.csv
bca,adc,asdf,123,12C
bca,adc,asdf,123,13C
def,adc,asdf,123,12A
I need this split... (6 Replies)
Hi Friends,
I have an input file like this
cat input
chr1 100 200 1 2
chr1 120 130 na 1
chr1 140 160 1 na
chr1 170 180 na na
chr1 190 220 0 0
chr1 220 230 nd 1
chr2 330 400 1 nd
chr2 410 450 nd nd
chr3 500 700 1 1
I want to calculate the division of 4th and 5th columns. But, if... (3 Replies)
Need help in awk command.
Need to check 4th column of a file, if it is CAR then awk should print as is and if 4th column is not present, awk should print BIKE
Input File content :
1,abc,55,CAR
3,bb,dd,CAR
5,ddd,tttt
8,ee,55
---------------------
Out put will look like:
1,abc,55,CAR... (6 Replies)
Hi Gurus,
one of my current script, there is awk statement as below:
awk '{a=a?a" "$3:$3}END{for (i in a) print i,a}'
I don't understand what's "{a=a?a" "$3:$3}" mean?
can anybody give me a brief explaination.
thanks in advance. (3 Replies)
Hi All,
I have the below Input:
1 700 1200 400 1300
2 2000 1000 2000 1500 600
3 1400 200 1000 1000 1200
4 1300 500 600 200
I want to modify the field 5 and field 4 as below.
If value in field 5 is null then value of field 4 should be in field 5. and then the value of... (12 Replies)
Hello All,
I have developed a script which selects a particular filed from a file ,trims it,searches for a particular pattern and then mail it when found.
cat test_file.txt |sed -n '5,$p'|sed -e 's/ //g'|awk -F'|' '{if ($4 !="Alive") print $1,$2,$3,$4}' >> proc_not_alive.txt
It is... (4 Replies)
Discussion started by: karthik adiga
4 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)