06-11-2009
Quote:
Originally Posted by
jayan_jay
In vi mode,
%s/^/#/g
thanks! and in emacs?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hi all,
please help me how to comment multiple lines in unix script.
thanks in advance
--bali (3 Replies)
Discussion started by: balireddy_77
3 Replies
2. Shell Programming and Scripting
Hello,
I have a file as follow
a
b
c
c
d
d
e
I would like to write a awk command to insert # from the first occurence of
"c" to the end of the files.
OUTPUT should be like this
a
b
#c (5 Replies)
Discussion started by: phamp008
5 Replies
3. UNIX for Dummies Questions & Answers
I have a working directory on a server with over 100 INI files. For the most part, they are configured the same way. Each line will contain 1 or none variables listed from the first character in the line such as VariableName=0.
Unfortunately there are comments everywhere using the... (4 Replies)
Discussion started by: hindesite
4 Replies
4. Shell Programming and Scripting
I want to find out which files under /etc have the the following section:
and then i would like to comment out the above section in all the files.
Please help. (3 Replies)
Discussion started by: proactiveaditya
3 Replies
5. Shell Programming and Scripting
Hi All,
I need to comment specific Two Lines in fstab & want to do using & also want to ensure that is done corretly.
I am trying the below method. But its giving Search pattern not terminated.
################
b36376 67 % cat linux-fstab_testing | perl -i -wnl -e '/^('\Q... (1 Reply)
Discussion started by: ajaincv
1 Replies
6. UNIX for Dummies Questions & Answers
Legends,
Can you please help me in following.
I need to comment lines from “/tmp/a.txt” from the line A to line B through the command prompt only.
Please use variables not direct values like 2 or 5
It can be done with VI editor but it's not matches with my requirement (: 2,5 s/^/#/g).
... (1 Reply)
Discussion started by: sdosanjh
1 Replies
7. Shell Programming and Scripting
Platform : RHEL 5.4
I have several .sql files in a directory. I want to comment lines 10 to 25 for all .sql files.
How can I do this ?
The symbol for comment in SQL is --
eg:
-- select salary from emp where empname = 'URS' ; (3 Replies)
Discussion started by: omega3
3 Replies
8. Shell Programming and Scripting
Greetings fellow scripters.
I find myself editing multiple files, sometimes with the same bits of information. My bash script, a changelog, and a plist file (OS X). Once I realized this, I thought why not script part of this process (and so it begins). In any case, I've solved several of the... (1 Reply)
Discussion started by: reid
1 Replies
9. Shell Programming and Scripting
Hello.
Question 1 :
I want to comment out all lines of a cron file which are not already commented out for each full path pattern matched.
Example 1 nothing to do because line is already commented out; pattern = '/usr/bin/munin-cron'
# */5 * * * * munin test -x... (3 Replies)
Discussion started by: jcdole
3 Replies
10. UNIX for Beginners Questions & Answers
Hello,
I have a SAS code that predominantly has comments line and the real code like below and i want to remove ONLY THE COMMENTS from the code in the single line or spanned across multiple lines.
/********************************************************************
*** This Is a Comment... (4 Replies)
Discussion started by: arooonatr
4 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)