If you get a chance, awk, as in the solution that ghostdog74 posted, is worthwhile to learn. It breaks up input lines into fields, which can then be re-arranged, deleted, assigned to, etc. Very useful, and, once you get the idea of:
you can do a lot with very little work ... cheers, drl
Hi,
Is there any way to traverse the file once and look for the following conditions in one sweep instead of going over the file 3 times with different search criteria......
sed -n '/^ORA-07445/ p' /tmp/t$$ > ${OERRFILE}
sed -n '/^ORA-00600/ p' /tmp/t$$ >> ${OERRFILE}
... (1 Reply)
hello there, I have a sed question.
I have a file (temp.srv), in it it has
v1_host1
v2_host2
And I have another file (temp2.srv), in it is has
v1_host3_date
v1_host1
v2_host2
v2_host4_date
v3_host5_date
I had used a script to remove the name from temp2.srv base on the name inside... (3 Replies)
Hi,
When deleting lines using sed, as i understand the lines are redirected to the standard output. What i'm unclear about is how to actually modify the file?
If I write the command sed '1,2d' test it will display lines one and 2 onto the screen however the file is not modified? I think my... (5 Replies)
I have a file that conatins following info
Policy1=U|guestRoom=test1idCode=5(1):!:Amenity2=U|RoomId=testrma=4(1):!:|
GuestRoomAmenity1=U|guestRoomId=testguest1id^rmaCode=5(1):!:|
I need it to look like this
Policy1=U|guestRoom=test1idCode
Amenity2=U|RoomId=testrmaCode... (2 Replies)
How would I use sed to print everything on the line after the regular expresion?
I have a configuration file setting several variables.
cfg.dat
DDB = cpptest
SUDBNAME = sucpptestdb
host = cpptest
Example
I want to search for the regular expresion 'SUDBNAME =' and print everything on... (3 Replies)
Write a sed script to extract the year, rank, and stock for the most recent 10 years available in the file top10_mktval.csv, and output in the following format:
------------------------------
YEAR |RANK| STOCK
------------------------------
2007 | 1 | Exxon... (1 Reply)
hi
i have a file with this line:
variable=/export/home/oracle
I want to change the file so that the path is replaced with the value of another variable
var2=/tmp/anything.
how to do this in sed?
thx (4 Replies)
I need to replace the numbers with a new string.
How can I give a wildcard for the different # of numbers
sed '/abcdef/s/abcdef=*/abcdef=999999/'<foo>foo1
From: To:
abcdef=1234 abcdef=999999
abcdef=12345 abcdef=999999
abcdef=123456... (10 Replies)
I am trying to write a script that will take an input text file in the format
person: place: phonenumber;
person: place: phonenumber;
person: place: phonenumber;
...
and output it using sed too:
Name ######## Location ######### Phone Number... (1 Reply)
Discussion started by: jmack56
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)