08-22-2013
Quote:
Originally Posted by
roy121
I tried to cut out the file from 6th position and sort the file using asort function....but in vain.....
need some help....
Please show us your attempted solution.
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1. Shell Programming and Scripting
Input
10 8 20 8 10 9 20 9
10 12 20 19 10 10 20 40
Output1
10 8 2 20 8 12 10 9 1 20 9 11
10 12 -2 20 19 1 10 10 0 20 40 -20
Output2
10 9 ... (0 Replies)
Discussion started by: repinementer
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2. Shell Programming and Scripting
input
a 1
a 2
a -1
b 1
b 2
b 3
output
a -1
b 1
Thanx
---------- Post updated at 09:42 PM ---------- Previous update was at 09:10 PM ----------
Ok I managed it (7 Replies)
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3. Linux
I think its 3. Just to know if I am correct.
/
/boot
swap
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4. Shell Programming and Scripting
Hi,
I have a file contaning some variables with negative values, but i just want to print the positive value
awk -F"|" '$2<0 { print $1,$2 }' tom.unl > tee.unl
i want the $2 = absolute value eg
-200 should print 200
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5. UNIX for Dummies Questions & Answers
Hi,
I have a wide and long dataset which looks as follows:
0 3 4 2 3 0 2 2 ...
3 2 4 0 2 2 2 3 ...
0 3 4 2 0 4 4 4 ...
3 0 4 2 2 4 2 4 ...
....
I would like to obtain the minimum of each column (ignoring zero values) so the output would look like:
3 2 4 2 2 2 2 2
I have the... (3 Replies)
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6. Shell Programming and Scripting
I want to search a bunch of files and list only those containing a minimum number of pattern matches. So if I want to identify files containing 3 (or more) instances of the pattern "said:" and I have file1 that contains the lines:
He said:
She said:
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7. Shell Programming and Scripting
Can I print the minimum and maximum values of values in first 4 columns ?
input
3038669 3038743 3037800 3038400 m101c
3218627 3218709 3217600 3219800 m290
.............
output
3037800 3038743 m101c
3217600 3219800 m290 (2 Replies)
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From the below table I want to print highest value and lowest value using awk script.
aaa 55 66 96 77
ggg 22 96 77 23
ddd 74 58 18 3
kkk 45 89 47 92
zzz 34 58 89 92
Thanks, Green
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Hi
I want to use awk to match where field 3 contains a number within string - then print the line and just the number as a new field.
The source file is pipe delimited and looks something like
1|net|ABC Letr1|1530|||
1|net|EXP_1040 ABC|1121|||
1|net|EXP_TG1224|1122|||
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10. Shell Programming and Scripting
Need your support for below. Please help to get required output
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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)