handling multiple files using awk command and wants to get separate out file for each
hai all
I am new to the world of shell scripting
I wanted to extract two columns from multiple files say around 25 files
and i wanted to get the separate outfile for each input file
tired using the following command to extract two columns from 25 files
files names are like 1_A.pdb, 2_A.pdb, ... 25_A.pdb
but the problem is, its giving everything in a single file i dont want to get it like that
is there any other way to get separate files for each input file
Hi,
I needs to split *.txt files from single directory depends on the some mutltiple input values. i have wrote the code like below
for file in *.txt
do
grep -i -h "value1|value2" $file > $file;
done.
My requirment is more input values needs to be given in grep; let us say 50... (3 Replies)
I have a log file that I am trying to convert. File contents something like this:
aaaaa bbbbbb cccc dddddd\123 eeeee ffffffff
I am trying to output the fields in a different order and separate field 4 so that the "123" and "dddddd" can be output separately. for example
bbbbbb aaaaa 123... (5 Replies)
I have a 500 MB XML file from a FileMaker database export, it's formatted horribly (no line breaks at all). The node structure is basically
<FMPXMLRESULT>
<METADATA>
<FIELD att="............." id="..."/>
</METADATA>
<RESULTSET FOUND="1763457">
<ROW att="....." etc="....">
... (16 Replies)
hello everyone....
script is: To convert the contents of a database file into uppercase
my code is:
printf "%s\n" , $2 | awk '{print toupper($2)}' emp.lst
i m able to do only for one field.....didn't get any sources for handling multiple fields.
please suggest me for multiple... (1 Reply)
Howdy Folks,
I have a list that looks like this:
(file2.txt)
AAA
BBB
CCC
DDD
and there are 24 of these short words.
I am matching these patterns to another file with 755795 lines (file1.txt).
I have this code for matching:
awk -v f2=file2.txt '
BEGIN {
while(... (2 Replies)
Hi,
I am trying to process 2 files simultaneously using awk satisfying following condition,
Both files contain 3 columns. It should take entry from column 1 from first file, look for that entry in file 2 and if found, add column 2 and column 3 from both files and output to third file. For e.g.... (4 Replies)
Hi,
I have one requirement, create separate files (".csv") from one excel file(xlsx) with multiple sheets. These ".csv" files are my source files. So anybody please suggest me the process.
Thanks in Advance.
Regards,
Harris (3 Replies)
Dear all,
My work is completely stuck cos of the following issue. Please find it here and kindly help me.
Task is following:
I have set of files with such pattern
1t-rw-rw-r-- 1 emily emily 119 Jun 11 10:45 vgtree_5_1_pfs.root
3t-rw-rw-r-- 1 emily emily 145 Jun 11 10:46 vgtree_5_3_pfs.root... (4 Replies)
Dear folks
I have two data set which there names are "final.map" and "1.geno" and look like this structures:
final.map:
gi|358485511|ref|NC_006088.3| 2044
gi|358485511|ref|NC_006088.3| 2048
gi|358485511|ref|NC_006088.3| 2187
gi|358485511|ref|NC_006088.3| 17654
... (2 Replies)
Discussion started by: sajmar
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)