Hello i need some help with the usage of sed.
Situation : 2 textfiles, file.in , file.out
In the first textfile which is called file.in are the words for the substitution.
Every word is in a new-line like :
Firstsub
Secondsub
Thridsub
...
In the second textflie wich is called file.out is... (5 Replies)
Hi
I have a problem when i use awk or sed to replace characters in file.
For example when I want to replace line like this :
00000O120100512 1.70 1.59 0.00 +7.280
I want to get a new line :
0000000O120100512 1.70 1.59 13.56 +7.280
In ksh :
awk... (1 Reply)
Hi ,
My file have data like
4:ALMOST NEVER PR 1925836
5:NEVER PR W DDA 5857610
6:NEVER PR WO DDA 26770205
but i want to replace the spaces before last numric digits out put should be like this
4:ALMOST NEVER PR=1925836
5:NEVER PR W DDA=5857610
6:NEVER PR WO... (7 Replies)
Hi,
In a file, I have several time
<IP>232.0.1.164</IP>
...
<IP>232.0.1.135</IP>
I need to replace all the random IP addresses , by 239.0.0.1 and 239.0.0.2 , alternatively.
I try this
grep "<IP>" tsp.xml | awk '{if(NR % 2)print $0}' | cut -d"<" -f2 | cut -d">" -f2 ... (3 Replies)
All,
I have thousands of lines in a file with following format
DATA=_ONE_XXX_YYY_CCC_HHHG_
DATA1=_GGG_JJJJ_HHH_UUU_JJJJ_HHHH_LLL_
DATA3=_MMM_GG_NN_QQQQ_FFF_III_
I want to replace _ with . by ignoring the first (=_) and last (_)
So that out put should looks like... (4 Replies)
Hi,
Need a help to replace a word if a pattern is found between the delimiters preferably using SED or AWK.
below is the sample file that iam dealing with, need to match pattern 'application' if found replace the whole word between the delimiters and also print the lines that don't match.... (1 Reply)
My code below will print only the email address from all lines. I want to convert it with sed or awk.. also what if i just want to find only filenames.
cat LIS_EMAIL | perl -wne'while(/+@+\w+/g){print "$&\n"}'
Hoping to extract the filename such us .exe, .bin. From file that has scrambled... (8 Replies)
Discussion started by: invinzin21
8 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)