How do I extract 5th to 10th characters of string as given below stored in a shell variable.
"ab cd ef gh ij kl"
How is cut to be used on this?
Thanks for any help. (1 Reply)
Hi,
Need to extract a string from one file and search the same in other files.
Ex:
I have file1 of hundred lines with no delimiters not even space.
I have 3 more files.
I should get 1 to 10 characters say substring from each line of file1 and search that string in rest of the files and get... (1 Reply)
i want to cut all the entries from the /etc/passwd file in which the uid is> 500
for this i was writing this ,m quiet new to all this.. scripting
but on the 6th n 8th line ,, i hav to specify a line number .. to get the commnd working .. but i want to use variable i instead of that ,,... (2 Replies)
Hi All,
I am writing a shell script for which I am stuck with an extraction part.
I arrived till extraction of a path of file. Lets take an example.
I now have a file which contains following one line:
2348/home/userid/mydir/any_num_dir/myfile.text
Now I want to extract only... (2 Replies)
I am trying to extract a hyperlink from a html document using awk. I have managed to output in the format... href="index.html"> where i would like it just to output index.html. Any ideas on how i would do this?
Thanks (2 Replies)
Hi ,
I have input file and i want to extract below strings
<msisdn xmlns="">0492001956</ msisdn> => numaber inside brackets
<resCode>3000</resCode> => 3000 needs to be extracted
<resMessage>Request time
getBalances_PSM.c(37): d out</resMessage></ns2:getBalancesResponse> => the word... (14 Replies)
Hi All,
I am pretty new to pattern matching and extraction using shell scripting. Could anyone please help me in extracting the word matching a pattern from a line in bash.
Input Sample (can vary between any of the 3 samples below):
1) Adaptec SCSI RAID 5445
2) Adaptec SCSI 5445S RAID
3)... (8 Replies)
Hi,
I have a file which is an extract of jil codes of all autosys jobs in our server.
Sample jil code:
**************************
permission:gx,wx
date_conditions:yes
days_of_week:all
start_times:"05:00"
condition: notrunning(appDev#box#ProductLoad)... (1 Reply)
I have a string:
2015-04-16 07:30:05,625000 +0900 xxxx.com
I just want to extract the time from the above line I am using the below syntax
x=~ /(.*) (\d+)\:(\d+)\:(\d+),(.*)\.com/
$time = $2 . ':' . $3 . ':' . $4;
print $time
But it is not working. Can some1 please help (2 Replies)
Hello.
First best wishes for everybody.
here is the input file ("$INPUT1") contents :
BASH_FUNC_message_begin_script%%=() { local -a L_ARRAY;
BASH_FUNC_message_debug%%=() { local -a L_ARRAY;
BASH_FUNC_message_end_script%%=() { local -a L_ARRAY;
BASH_FUNC_message_error%%=() { local... (3 Replies)
Discussion started by: jcdole
3 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)