1. The problem statement, all variables and given/known data:
I dont know what I do wrong, I am trying to create shell programming database:
I have this command first:
&& > $fname
...
echo $Name:$Surname:$Agency:$Tel:$Ref: >> $fname
then I have
echo " Name Surname Agency Tel... (2 Replies)
Hi,
I usually use Access to sort data however for some reason its not working. Our systems guys and myself cannot figure it out so ive tried to use AWK to do the sorting. The file is made up of single lines in the format
... (4 Replies)
Hello all -
I am to this forum and fairly new in learning unix and finding some difficulty in preparing a small shell script. I am trying to make script to sort all the files given by user as input (either the exact full name of the file or say the files matching the criteria like all files... (3 Replies)
Hi
How do I sort two arrays in a ascending order? I'm just doing this to teach myself a book my dad got me on unix.
The arrays are A and B and both are including values taken from a file input by the user.
How do I arrange the contents of both arrays so that they are both ordered from... (3 Replies)
Hi
I am not a good awk programer but the below code serving my purpose
Input
process 12936 user-name 15u IPv4 7438309 0t0 TCP prdabc.cesi.com:42016->efh.ijk.com:50002 (ESTABLISHED)
process 12942 user-name 13u IPv4 7764990 0t0 TCP abc.abc.com:9402->192.168.1.1:63919... (2 Replies)
1. The problem statement, all variables and given/known data:
I have a file with a fragment of a novel, which I have to clear from punctuation and sort all the words contained one per line and non duplicated, all this going to a file called "palabras".
Here is fragment of the input file:
... (4 Replies)
In the below awk to add a sort by smallest to largest should it be added after the END? Thank you :).
BEGIN {
FS="*"
}
# Read search terms from file1 into 's'
FNR==NR {
s
next
}
{
# Check if $5 matches one of the search terms
for(i in s) {
if($5 ~ i) {
... (4 Replies)
I'm trying to create a shell script that takes a awk script that I wrote and a filename as an argument. I was able to get that done but I'm having trouble figuring out how to keep the header of the output at the top but sort the rest of the rows alphabetically. This is what I have now but it is... (1 Reply)
Discussion started by: Eric7giants
1 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)