I have a text file with rows of information (it is basically a ls command information(o/p from ls command))
I need to remove the lines ending with a .cnt extension and keep the lines ending with .zip extension, how to accomplish this.
I also only need the date,size and name of the file from every... (2 Replies)
I'm trying to search for lines ending with "}" with the following command but am not getting any output.
grep '\}$' myFile.txt
I actually want to negate this (i.e. lines not ending with "}"), but I guess that should be easier once I find the command that finds it? (11 Replies)
HI
I'm looking to delete lines ending with .tk from below data file
---------
abc.tk
mgm.tk
dtk
mgmstk
------
I have written below code
----
sed '/.tk *$/d' dat_file.txt > temp.txt
----
But its deleting all the lines ending with tk. I need to delete only the lines ending .tk
my... (5 Replies)
Hi,
I have an ASCII text file where some of the lines are ending with '+' character.
I have to concatenate the next successive line with those lines having the trailing '+' char by removing that char.
The below awk code has some problems to do this task:
awk '{while(sub(/\+$/,"")) {... (12 Replies)
I have a text file with contents given below:
file:///About/
file:///About/accessibility.html
file:///About/disclaimer.html
file:///About/disclaimer.html#disclaimer
file:///About/glance/contact_info.html
file:///books/
file:///bookshelf/br.fcgi?book=helppubmed&part=pubmedhelp... (6 Replies)
Hello,
I am working with a list that contains a large number of files listed by their absolute path. I am trying to determine a way to delete the file name at the end of each line, therefore leaving just the directory path. For example, I'd like to go from:
/home/something/file... (2 Replies)
Hi, I have multiple large files which consist of the below format:
I am trying to write an awk or sed script to remove all occurrences of the 00 record except the first and remove all of the 80 records except the last one.
Any help would be greatly appreciated. (10 Replies)
I am trying to find files that have lines in them that end in an r. I have been able to locate files by using the following command:
find . -type f -name "*RECORDS"| xargs grep -l r$
However, I now want to find files that don't end in r anywhere. That means that no sentences or lines in... (9 Replies)
Hi,
I have numerous files which have data in the following format
A|B|123.|Mr.|45.66|33|zz
L|16.|33.45|AC.|45.
I want to remove decimal point only if it is last character in a number.
O/p should be
A|B|123|Mr.|45.66|33|zz
L|16|33.45|AC.|45
I tried this
sed -e 's/.|/|/g'
Problem... (6 Replies)
I have a file of a content like this:
abc_bla -def 800
abc_bla -def 802
abc_bla -def 804
abc_bla -def 806
abc_bla -def 808
abc_bla -def 810
abc_bla -def 812
abc_bla -def 814
...
abc_bla -def 898
abc_bla -def 900
abc_bla -def 902
abc_bla -def 904
...
abc_bla -def 990
abc_bla -def... (7 Replies)
Discussion started by: maya3
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)