Hi!
I'm new here and glad to meet everyone!
I've been wrestling with a problem lately however! How do I recursively (recursive means to keep going through the subdirectories until no more are there) search a bunch of textfiles in a long directory structure for a specific string.. but only... (1 Reply)
Hi,
Need to extract a string from one file and search the same in other files.
Ex:
I have file1 of hundred lines with no delimiters not even space.
I have 3 more files.
I should get 1 to 10 characters say substring from each line of file1 and search that string in rest of the files and get... (1 Reply)
Looking for a bit of help. I need to search for a string of words, but unfortunately these words are located on separate lines.
for example the text output is:
United
Chanmpions
Ronaldo
Liverpool
Losers
Torres
and my script code is
print("DEBUG - checking file message");
while... (15 Replies)
Hi,
I am new to unix shell scripting.
I have a requirement.
Could anyone help me writing the script for the same?
Here goes the requirement:
I have a config file let's say temp.config.
Here is the data in the config file
temp.config :
-------------
name=victor
age=42
state=texas... (5 Replies)
Hi,
I'm very new to UNIX scripting and find quite difficult to understand simple UNIX syntax. Really appreciat if somebody could help me to give simple codes for my below problems:-
1) I need to search for a string "TTOH 8031950001" in a files which filename will be "*host*'. For example, the... (3 Replies)
Hi Forum.
Is there a quick way to do the following search/replace within a block of data? I tried to google the solution but didn't really know what to look for.
I have the following text file (I want to search for a particular string "s_m_f_acct_txn_daily_a1" and replace the... (5 Replies)
Hi all,
I have some data in the form of
adc|nvhs|nahssn|njadnk|nkfds
in the above data i need to write a script so thet it will append "|||" to the third occurnace in the string ..... the outout should look like
adc|nvhs|nahssn||||njadnk|nkfds
Thanks,
Firestar. (6 Replies)
without using conventional file searching commands like find etc, is it possible to locate a file if i just know that the file that i'm searching for contains a particular text like "Hello world" or something? (5 Replies)
Hi everyone !
suppose i'm searching for a specific string in a file so it is very easy, i use the following command
grep 'keyword' file_name
but how to search a word which is repeated maximum number of times in a file, for example in the following text i have to search a word which is... (12 Replies)
Hi all,
i have a generated report in unix in the following command like
input.txt
47.85,10
0124,42.35,8
0125,3.5,2
the input file format is fixed
I need the my output file with append text as below
output.txt
0124 amount:42.35
0125 amount:3.5
0124 count : 8
0125... (34 Replies)
Discussion started by: hemanthsaikumar
34 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)