10-23-2012
Quote:
Originally Posted by
metallica1973
Many Thanks PAMU,
But I want to know how to do this using GAWK.
I don't think you need
gawk here..
any specific reason behind this..?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have to compare records in two files. It can be done using gawk/awk but i am unable to do it. Please help me
File1
ABAAAAAB BC asa sa
ABAAABAA BC bsa sm
ABBBBAAA BC bxz sa
ABAAABAB BC csa sa
ABAAAAAA BC dsa sm
ABBBBAAB BC dxz sa
File 2
ABAAAAAB BC aas ba
ABAAAAAB BC asa sa... (6 Replies)
Discussion started by: sandeep_hi
6 Replies
2. Shell Programming and Scripting
Guess the subject lines says it all.
What is the perl equivalent to grep -c
-c, --count
Suppress normal output; instead print a count of match-
ing lines for each input file. With the -v, --invert-
match option (see below), count non-matching lines.
... (6 Replies)
Discussion started by: popeye
6 Replies
3. Shell Programming and Scripting
Hi,
I am using the script to print the portion of the file containing a particular string. But it is giving error "For Reading (No such file or directory). I am using cygwin as unix simulator.
cat TT35*.log | gawk -v search="12345678" '
/mSOriginating /,/disconnectingParty/ {
... (1 Reply)
Discussion started by: vanand420
1 Replies
4. Shell Programming and Scripting
Hi folks
I am not allowed to install GNU grep on AIX.
Here my code excerpt:
grep_fatal () {
/usr/sfw/bin/gegrep -B4 -A2 "FATAL|QUEUE|SIGHUP"
}
Howto the same on AIX based machine?
from manual GNU grep
‘--after-context=num’
Print num lines of trailing context after... (4 Replies)
Discussion started by: slashdotweenie
4 Replies
5. Shell Programming and Scripting
Hi,
I'm working with gawk (on DOS) today.
A goal is: find a string for-instance '123', cut a line in two columns and write second one. The problem is: command line works OK, awk file doesn't. But I would like to work with file because there are many strings to find.
input:
line command:
awk... (4 Replies)
Discussion started by: frajer
4 Replies
6. Shell Programming and Scripting
I'm looking for SED equivalent for grep -w -f. All I want is to search a list of patterns from a file. Also If the pattern doesn't match I do not want "null returned", rather I would prefer some text as place holder say "BLANK LINE" as I intend to process the output file based on line number.
... (1 Reply)
Discussion started by: novice_man
1 Replies
7. Shell Programming and Scripting
I have to do grep -v in a perl script. I want to exclude blank lines and lines having visitor.
#grep -v visitor abc.txt |grep '.'
file:abc.txt
1340 not booked 16D:D9 tourist 8
1341 not booked 16C:D4 tourist 25
1342 not booked 16D:C4 visitor 7
1343 not booked 01C:D9 visitor 6
1344... (4 Replies)
Discussion started by: dynamax
4 Replies
8. Shell Programming and Scripting
Any equivalent command using awk or grep?
sed -n "/^$(date --date='10 minutes ago' '+%b %_d %H:%M')/,\$p" /abc.log (7 Replies)
Discussion started by: timmywong
7 Replies
9. SCO
I am trying to use gawk to search a file and put the second value of the string into a string.
gawk -F: '$1~/CXFR/ {print $2}' go.dat
Below is the file 'go.dat'
====================
HOME :/
CTMP :/tmp
CUTL :/u/rdiiulio/bin
CWRK :/u/work
CXFR :/u/xfer
... (1 Reply)
Discussion started by: trolley
1 Replies
10. AIX
Need grep -v "Hello" equivalent for AIX (9 Replies)
Discussion started by: mohtashims
9 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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 v5.16.3 2010-06-11 SHELL-QUOTE(1)