Hi,
Can i pass a parameter(not a file name) as a parameter to a awk program?
eg;
$awk -f test 1 2 3
here test is the filename...and 1,2,3 are the i/p parameters?
thank you:-) (2 Replies)
Hi,
My script takes in one input parameter($1-email id) on the command line...
The script contains something like this...
awk '$1 == 400' abc.log >def.log
mail -s subject $1 <def.log
abc.log looks something like this...
300 222 330 123 445
400 098 890 727 663
How do i make the... (3 Replies)
hi guys
i need your help , i wrote one script which is as below
#!/bin/ksh
###########################################################
LOGDIR=/export/home/xyz/logs
EMAILFile=$LOGDIR/xxs_email.log
BOX=$(uname -a | awk '{print $2}')
awk '{if ($4 >= 30) {print $1 " " $3 " HAS LAG of "... (1 Reply)
Hi All,
I am trying to pass a parameter to AWK on my KSH shell prompt as below.
var1=2
echo $var1
awk -v var2=${var1} '{print var2}' testfile.txt
I am passing the input file (testfile) to awk to get some o/p. It is having 10 records.
When I run AWK, it is throwing the following errors... (1 Reply)
Hi
var=0001
I want to replace 2nd field of file with variable var in file sample.txt
Please suggest with awk. dont want to use awk -v option.
pseudo code : something like this.
var=0001
awk '{ 12193 /var } {print $0 }' sample.txt (2 Replies)
In below script parameterwhich i am passing to awk function is not working.Not sure why its not accepting parameter.Please tell me how to pass parameter to the awk function.Please check the below script.
#!/bin/ksh
dummy_file=/etlapps/dev/data/sub_servicer_data/ScriptLogs/emp.txt
fields=5... (2 Replies)
Hi,
I have a situation where I need to create a SQL statement using Unix script for each value in first field (ID). The file looks like this.
Id,TARGET_FIELD_NAME,SOURCE_FIELD_NAME
1,Test_Rate,Field1
1,Test_Factor,Field2
1,Test_Size,Field3
2,Test_Rate,Field4
2,Test_Factor,Field5... (3 Replies)
Can I specify a default value to a variable in AWK like BASH in one statement using parameter substitution?
BASH example:
argument=${$1-"default if empty"} (BASH)
I know I can do:
argument=$1; sub ( "^$", "default if empty", argument) (AWK)
Mike (13 Replies)
Discussion started by: Michael Stora
13 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)