I'm working on formatting some attendance data to meet a vendors requirements to upload to their system. With some help on the forums here, I have the data close. But they've since changed what they want.
The vendor wants me to submit three fields to them. Field 1 is the studentid field,... (4 Replies)
hi forums
i need help with a little problem i am having.
i need to count the number of fields that are in a saved variable so i can use that number to make a different function work properly.
is there a way of doing this without using SED/AWK?
anything would be greatly appreciated (4 Replies)
Hi Gurus,
Have a file seperated by "~" and no of fields is 104. When i try to run awk, it erros out.
awk: record `B~A31~T24_STF~~~2009...' has too many fields
Any idea how can i extract a specific filed with this many fields in a row.
Kindly help (3 Replies)
I have a CSV file with a variable number of fields per record. How do I print lines of a certain number of fields only? Several permutations of the following (including the use of escape characters) have failed to retrieve the line I'm after (1,2,3,4)...
$ cat myfile
1,2,3,4
1,2,3
$ # Print... (1 Reply)
I want to use awk to split fields and put them into a file
but I don't know the number of fields
for example, in the following line
Ports: 22/filtered/tcp//ssh///, 53/open/tcp//tcpwrapped///, 111/filtered/tcp//rpcbind///, 543/filtered/tcp//klogin///, 544/filtered/tcp//kshell///,... (3 Replies)
Hy!
I need to post-process some data files which have variable (and periodic) number of fields. For example, I need to square (data -> data*data) the folowing data file: -5.34281E-28 -3.69822E-29 8.19128E-29 9.55444E-29 8.16494E-29 6.23125E-29
4.42106E-29 2.94592E-29 1.84841E-29 ... (5 Replies)
Hi,
input:
AA|BB|CC
DD|EE
FF
what I am trying to get:
AA|BB|CC
DD|EE|
FF||
I tried to create first an UDF for printing repeats, but I think I have an issue with my END section or my array:
function repeat(str, n, rep, i)
{
for(i=1 ;i<n;i++)
rep=rep str
return rep
}
... (6 Replies)
If a file has following kind of data, comma delimited
1,2,3,4
1
1
1,2,3,4
1,2
2
2,3,4
My required output must have only 4 columns with comma delimited
1,2,3,4
111,2,3,4
1,222,3,4
I have tried many awk command using ORS="" but couldnt progress (10 Replies)
Hi Guys,
I've obviously had a senior moment here, what I'm trying to do is set the number of fields to 35 in a csv these should be appended to the end of the line. But what I'm getting is:-
Source Data
$ head out_file_01.txt
N1000,024,2809003,,,3,DYNAMIC AVLEASE INC,PO BOX... (10 Replies)
Hi,
Below are the sample files. x.txt is from an Excel file that is a list of users from Windows and y.txt is a list of database account.
$ head -500 x.txt y.txt
==> x.txt <==
TEST01 APP_USER_PROFILE
USER03 APP_USER_PROFILE
TEST02 APP_USER_EXP_PROFILE
TEST04 APP_USER_PROFILE
USER01 ... (3 Replies)
Discussion started by: newbie_01
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)