01-13-2016
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I want to write a script which will compare the 1st column of both the files and will give the difference.
e.g:-
my 1st file contains:
89 /usr
52 /usr/local
36 /tmp
92 /opt
96 /home
27 /etc/opt/EMCom
1 ... (3 Replies)
Discussion started by: adityam
3 Replies
2. Shell Programming and Scripting
Hi,
I have writtena script that will recursivly go into subdirecotries and report out what files there are in there that have not been accessed over various date ranges.
I do this using a number of find commands:
find . -path './.snapshot' -prune -o -type f -atime -8
find... (4 Replies)
Discussion started by: littleIdiot
4 Replies
3. HP-UX
Hi there,
I have 2 machines running HP-UX. One off these controllers is able to send mail and the other cannot. I have looked at all the settings that I know and coannot find any differences. Is there a way to audit the 2 machinces by pulling all the settings then compare any differences?
... (2 Replies)
Discussion started by: lodey
2 Replies
4. Shell Programming and Scripting
Hi
I have two sample files attached here
one file contain entries in one column and second file contains entries in many columns
I have to match entries of first file with entries in secon d file form secon column onwards and if matches write "match" in front of it.
I tried several... (11 Replies)
Discussion started by: manigrover
11 Replies
5. Shell Programming and Scripting
hi ,
from the awk command i'm getting the output where the 2nd column of both are match in row wise,
if it present in that same column some where else, I cannot get the correct output.
awk 'FNR==NR {a=$5;next} $1 in a {if ($5==a) t=0; else {t=$5-a};print $0,t}' file.tsv file2.tsv
please... (3 Replies)
Discussion started by: Shenbaga.d
3 Replies
6. Shell Programming and Scripting
Hi All,
I am trying to run find command in a script to list out certain files based on a patter. However, when there is no file in the output, the script should exit.
Tried a couple of operators (-n, -z) etc but the script does not work.
I am confused whether a null string is returned... (3 Replies)
Discussion started by: danish0909
3 Replies
7. Shell Programming and Scripting
hi.. i am using solaris system and ksh and using nawk to get records of file1 not in file2(not line by line comparison). code i am using is nawk 'NR==FNR{a++} !a {print"line:" FNR"->" $0} ' file2 file1
same command with awk runs perfectly on darwin kernel(mac) but in solaris it does line by... (2 Replies)
Discussion started by: Abhiraj Singh
2 Replies
8. Shell Programming and Scripting
Hello, i am new in Bash. Actually i have a directory : /home/resultfiles and inside i have these txt files:
531_1.out.res, 531_2.out.res , 531_3.out.res
532_1.out.res, 532_2.out.res , 532_3.out.res
533_1.out.res, 533_2.out.res, 533_3.out.res
All these txt files has this format :
num_q all... (3 Replies)
Discussion started by: nimpoura
3 Replies
9. Shell Programming and Scripting
Hello experts!
I have 2 files.
file1 is a list file containing uniquely names. e.g.:
name1 number number
name2 number number
name5 number number
name10 number number
...
file2 is a data file arbitrary containing the names of file1 in paragraphs separated by "10" e.g.
name4 ... (3 Replies)
Discussion started by: phaethon
3 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)