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1. UNIX for Beginners Questions & Answers
I have a large semicolon delimited file with thousands of columns and many thousands of line. It looks like:
ID1;ID2;ID3;ID4;A_1;B_1;C_1;A_2;B_2;C_2;A_3;B_3;C_3
AA;ax;ay;az;01;02;03;04;05;06;07;08;09
BB;bx;by;bz;03;05;33;44;15;26;27;08;09
I want to split this table in to multiple files:
... (1 Reply)
Discussion started by: trymega
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2. Shell Programming and Scripting
Shell script logic
Hi
I have 2 input files like with file 1 content as (file1)
"BRGTEST-242" a.txt "BRGTEST-240" a.txt "BRGTEST-219" e.txt
File 2 contents as fle(2)
"BRGTEST-244" a.txt "BRGTEST-244" b.txt "BRGTEST-231" c.txt "BRGTEST-231" d.txt "BRGTEST-221" e.txt
I want to get... (22 Replies)
Discussion started by: pottic
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3. Shell Programming and Scripting
Hello Unix Shell Script Experts,
I have a script that would mask the columns in .csv file or .txt file.
First the script will untar the .zip files from Archive folder and processes into work folder and finally pushes the masked .csv files into Feed folder.
Two parameters are passed
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Discussion started by: Mahesh G
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4. Shell Programming and Scripting
i have a file with some number of colums and each row have different number of fields.
now my target is supposed to be, each row should have same number of columns.
example:
src file:
111,S3mobile,Samsu
ng
112,Lu
mia,Nok
ia
113,brav
ia,Sonyerichson
tgt file:
111,S3mobile,Samsung... (8 Replies)
Discussion started by: abhilash_nakka
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5. Shell Programming and Scripting
I need to split a file if it is over 2GB in size (or any size), preferably split on the lines. I have figured out how to get the file size using awk, and I can split the file based on the number of lines (which I got with wc -l) but I can't figure out how to connect them together in the script.
... (6 Replies)
Discussion started by: ssemple2000
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6. Shell Programming and Scripting
I have a problem which I would like to solve by using UNIX power and inspired minds around world. Here is the problem
I have a text file and it has data as follows
1X.....................1234567890123456789T1234598765XT1 (header)
1Z01............(sub HEADER)
P100001............
Q1........... (4 Replies)
Discussion started by: ask.chowhan
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7. Shell Programming and Scripting
Hi i have a file like
a 12
b 13
c 14
d 15
I want to split it based on a blank line like in first file I should have
a 12
b 13
and in the second file I have
c 14
d 15
How can i do this? Any help will be greatly appreciated (5 Replies)
Discussion started by: prarat
5 Replies
8. Shell Programming and Scripting
Hi,
I have file: data.log.1
### s1
main.build.3495
main.build.199
main.build.3408
###s2
main.build.3495
main.build.3408
main.build.199
I want to read this file and store in two arrays in Perl.
I have following command, which is working fine on command prompt.
perl -n -e... (1 Reply)
Discussion started by: ashvini
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9. Shell Programming and Scripting
Hi,
I'm experiencing difficulty in loading an XML file to an Oracle destination table.I keep running into a memory problem due to the large size of the file.
I want to split the XML file into several smaller files based on the keyword(s)/tags : '' and '' and would like to use a Unix shell... (2 Replies)
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10. Shell Programming and Scripting
Hi
How can i dynamically read files names from a list file and execute them from a single shell script.
Please help its urgent
Thanks in Advance (4 Replies)
Discussion started by: anushilrai
4 Replies
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)