[..]But since the search string appeared in both Field 3 and 4, I needed to pull both before and after lines. I could've used the command below to get just the two files i needed:
Only when 1234567890 occurs in field 4, not when it occurs in field 3
Hi. I wanted to increase my knowledge base with unix. can you help me find a like that talks about luns, physical volumes, volume groups, logical volumes then mountpoints? i would appreciate it
thanks
Jigar (1 Reply)
Hi, guys. My friends and I used to rent space from our ISP, and they applied Cpanel to help us to config. Recently we just upgrade to the dedicated server plan, and there is nothing but only the os has been installed. Since Cpanel is the commercial software, we cannot afford it, we need to find a... (2 Replies)
Can any1 please help me answer a couple of this question?
1) What is the process management of UNIX? (single task, multitasks, etc...)
2) What is the process management of Linux? (single task, multitasks, etc...)
3) What is the type of process of UNIX? (process, thread, etc...)
4)... (1 Reply)
I am trying to update a script which I had created to monitor tablespace usage.
Originally the sql spooled out to a text file anything with more than 75% used.
I have been asked to change this.
Now the sql must spool out all tablespaces.
The script I have to write should scan the file for... (4 Replies)
hello everybody!
I m compiling some program with the g++ on AIX 5.3 and it needs some library that i didn't find them i am new with the AIX here is the compilation error :
g++ -Daix -fpic -o printps -lxercesc1_1 -L/oracle/OraHome/lib32/ -L/epost2/blitz/lib -lhmltods -lhmltops -lgeneric... (0 Replies)
Hello everybody,
How can I do seek several words with grep command ?
I didn't find how to do that in the man for I'm French.
Then I tried
man bash | grep -in control flow
But flow is interpreted as an input file
Then I tried
man bash | grep -in "control" -a "flow"
but doesn't seem to work... (4 Replies)
Hi ,
I have to use HP-unix OS to get difference between 2 files.while i tried a piece of code in other OS(linux/unix) as below, it worked fine & the output is desired one.
diff --suppress-common-lines -y file_1 file_2 >d.txt
The same doesn't works in HP -unix. Any help shall be... (6 Replies)
Discussion started by: vinil
6 Replies
LEARN ABOUT DEBIAN
shell-quote
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)