My file in ksh consists of message data of varying lengths (lines), separated with headers.
I would like to find a string from this file, and print out the whole message data including the headers.
my plan of attack is to search the strings, print the top header, and print the whole message... (2 Replies)
Dear All ,
I am posting first time in this forum . Please ignore my mistakes .
I am learning Unix and i need help to extract specific data from file .
1. I want to grep number of fails from log . The file contains "fails" word in line if test cases are failed .
2. The log contains... (20 Replies)
Hello again, how do you extract data from a file? I have created a file with PID #s in it, I need to be able to take the PID from each line and kill it. How is this done? (4 Replies)
I m new to shell scripting & i need a help....
i have file like....
Name := sachin
address:=something
phone:=111
...
Note: There might be or not space between Name & := and between := & sachin. I need to extract the data from each line of file as
var1=Name
value1=sachin
same for... (13 Replies)
I need to create a script to extract some specific data from a file. I locate the file using the find command:
find . -name "rpbol*" -print | xargs grep -li
Once I locate the file I need using the above command, I would like to extract some data from that file. The data is always located... (2 Replies)
Hello,
Hope you are doing fine. I have been struggling with it for some time now and I would really appreciate your help.
Following is file format:
Currency,Name,Date, Term
USD, ABC, 2011/11/11, T0, S1, S2, S3, S4
, , ,T1, 5.6, 2.3, 6.5, 4.5
, ... (5 Replies)
Hi, Great minds, I have some files, in fact header files, of CTD profiler, I tried a lot C programming, could not get output as I was expected, because my programming skills are very poor, finally, joined unix forum with the hope that, I may get what I want, from you people,
Here I have attached... (17 Replies)
I have a text file that contains the following data. For example, aa.txt has some numbers. I need to extract the continuous numbers(minimum 3 numbers) from it.How can I do this with awk?
>aa.txt
31
35
36
37
38
39
44
169
170
173
174
175
177
206
>1a.txt
39 (5 Replies)
Hi ,
I am having a file which is PIPE delimited like this :
file.txt
aus|start|10:00:00
nz|start|11:00:00
aus|end|10:10:00
us|start|10:00:00
nz|end|11:10:00
us|end|11:00:00
.
.
.
I want to extract an output file like this based on start time and end time for each countries: (9 Replies)
Discussion started by: rohit_shinez
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)