Hi
I have a file which have say about 100,000 records..
the records in it look like
Some kind of text 1234567891 abcd February 14, 2008 03:58:54 AM lmnop
This is how it looks.. if u notice there is a 2byte space between each column.. and im planning to replace that with '|' ..
... (11 Replies)
Hello All,
I have a file with thousands of records:
eg:
|000222|123456987|||||||AARONSON| JOHN P|||PRIMARY |P
|000111|567894521|||||||ATHENS| WILLIAM k|||AAAA|L
Expected:
|000222|123456987|||||||AARONSON| JOHN |P|||PRIMARY |P
|000111|567894521|||||||ATHENS| WILLIAM |k|||AAAA|L
I... (6 Replies)
I am trying to extract 'postmaster' from the following string:
PenaltyError:=554 5.7.1 Error, send your mail to postmaster@LOCALDOMAIN
using the following command:
cat /usr/share/assp/assp.cfg | grep ^PenaltyError:= | cut -d '@' -f1 | cut -f8
but it returns:
PenaltyError:=554 5.7.1 Error,... (10 Replies)
Hello,
Is there a direct command to check if the delimiter in your file is a tab or a space? And how can they be converted from one to another.
Thanks,
G (4 Replies)
I have a csv file and there is a problem which I need to resolve.
Column1,Column2,Colum3,Column4
,x,y,z
,d,c,v
t,l,m,n
,h,s,k
,k,,y
z,j, ,p
Now if you see column1 for row 1 and row 4 though they are null there is a space but in case of row2 and row 5 there is no space.
I want row... (3 Replies)
I have more than 1000 files to parse. Each file contains few lines (number of lines varies) followed by a header line having all column's name (SPOT, NAME etc) and then values for those columns.
**Example File:
sdgafh
dfhaadfha
sfgaf dhah jkthdj
SPOT NAME GENE_NAME CH_MEAN CHDN_MED ... (11 Replies)
not sure if i'm doing this right i'm new tho this but i'm trying to use a space as a delimiter with the cut command
my code is
size=$( du -k -S -s /home/cmik | cut -d' ' -f1 )
i've also tried -f2 and switching the -d and -f around if that does anything (3 Replies)
Hi there,
After lots of reading I figured out how to use sed to parse my file.
This file is called services.txt:
00a1:ffff0000:0018:01f4:1:477
BravaNL
00a2:ffff0000:0018:01f4:1:471
MAX
00a3:ffff0000:000b:01f4:1:390
HaberTürk... (5 Replies)
Hi ,
Please suggest me how do I use : (colon and one space) as a delimiter in awk
Best regards,
Vishal (2 Replies)
Discussion started by: Vishal_dba
2 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)