Hi all,
I am new to UNIX, so sorry if my question seem stupid to u.
well i want to replace the first character of first 30 lines of a file, only if the first character is h.
and
in anothe script i want to replace a particular string/character say hello/h of a file.Condition: It should... (1 Reply)
// AIX 5.3
I am trying to use .sh after changing it to .ksh
Obviously, it doesn't like the file extension change.
I am seeing a lot of odd characters (^M) like below:
Init_Part2 ()^M^M
{^M^M
AWTRACE "AW SET"^M^M
set | grep -e CFG_ -e OUTDIR_ENV^M^M
AWTRACE "AW SET"^M^M
^M^M
if ;... (2 Replies)
Sorry to bug you, but my sed is failing me,
I have a file auto generated from abinitio, it has a string of chars ending with a line break, and then it has added a ^A character, I can remove this is vi by using the following %s/^A//g (where ^A is ctrl v and control A), however when I try to sed... (1 Reply)
i want to print ODD lines like first ,third then fifth and so on
234,567,ABC,KJL
234,565,ABD,KJL
234,568,ABE,KJL
234,560,ABF,KJL
234,563,ABG,KJL
234,562,ABH,KJL
O/P will be like
234,567,ABC,KJL ----->first liine
234,568,ABE,KJL ----->third line
234,563,ABG,KJL ----->fifth line... (6 Replies)
how to delete/replace the the odd occurance of a pattern say newline character "\n"
a,b,c,d
e,f
g, h, i, j, k, l
m,n
1, 2, 3, 4,
5, 6
1, 3, 4, 5, 6, 7
the output should be
a,b,c,de,f
g, h, i, j, k, lm,n
1, 2, 3, 4,5, 6
1, 3, 4, 5, 6, 7 (4 Replies)
Hi friends,
I am looking for sed command/script that would search for a given fixed pattern on odd lines and then if it matches, prints the matching pattern and the next line. For example, in the example below, i am looking for pattern 0 and 1011 on odd lines.
########## start of example file... (10 Replies)
Hello people,
I am trying with sed to insert some text at the beginning of each odd line of a file but no luck. Can you please help. Awk is also suitable but I am not very familiar with it.
Thank you in advance for any help. (7 Replies)
This is for AIX 6.1, I've a flat file and the format is like this
DECLARE
some statements;
BEGIN
some statements;
END;
I've to search BEGIN and replace it with the following 4 lines
BEGIN
For x in 1..1
LOOP
BEGIN
Similarly I've to search END and replace it with the... (7 Replies)
Discussion started by: Mukul Sharma
7 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)