---------- Post updated at 07:17 PM ---------- Previous update was at 06:17 PM ----------
Based on dennis.jacob's idea, with the almighty Z-Shell
Thank you very much but I have this bug:
Let's say that in the wordlist is the word "1a2b3c"
Running your first program will have output:
alex@lol-pc:~/Desktop$ ./ty
121212
131313
123123
21122112
abcd1234
1a2b3c
cccccc
alex@lol-pc:~/Desktop$
which contains the 1a2b3c but not only this. Can you fix this?
hi,
if i have a string of letters and seperatly i have a single letter. how do i check whether that specific letter is in my string aswell? any ideas? (2 Replies)
Hi,
I have a file 'imei_01.txt' having the following contents:
$ cat imei_01.txt
a123456
bbr22135
yet223
where I want to check whether the expression 'first single alphabet followed by 6 digits' is present in the file (here it is the first record 'a123456')
I am using the following... (5 Replies)
Hi,
I have a file which has the below information
tm.orbit72
tm.orbit12
tm.orbit78
tm.orbitye
I want to print the last two letters in the above file. Please let me know how can i do that. (6 Replies)
Hi gurus,
A file contains many words in format "ABC.XXXX.XXXX.X.GET.LOG" (X->varying). Now my shell script want this list (only words in formatABC.XXXX.XXXX.X.GET.LOG ) to continue the process. Pls help me.
Thanks,
Poova. (8 Replies)
Hi I have a huge line like the following:
this word and many other words AA122134 other and other words and AA224466 and other other other other word AA667210 words
I only want extract the words AA?????? and put them in a column, how could i do ?
thx so much! (7 Replies)
I trying to match the begining of the following line in a perl script with a regular expression.
$ENV{'ORACLE_HOME'}
I tried this regluar expession:
/\$ENV\{\'ORACLE_HOME\'\}/
Instead of match, I got a blank prompt >
It seems to be a problem with the single quote. If I take it... (11 Replies)
Hi all,
I have 7 words
CAD
CD
HT
RA
T1D
T2D
BD
Now I have 1 file which contain data in large number of rows and columns
from 2 nd column onwards it contain any of these 7 words or may be more than one words among above 7 words:
these 7 names are present in starting from 2nd ... (7 Replies)
Hi friends,
I have a some files in a directory. for example
856-abc
856-def
851-abc
945-def
956-abc
852-abc
i want to display only those files whose name starts with 856* 945* and 851* using a single pattern.
i.e
856-abc
856-def
851-abc
945-def
the rest of the two files... (2 Replies)
Hello, how in bash i can get directory loop, but only choose those folders with specific word in it, so it will only echo those with specific word
#!/bin/bash
for filename in /home/test/*
do
if ; then
echo $filename;
fithx! (4 Replies)
Hi,
I want to know which pattern matching technique will be giving better performance and quick result.
I will be having the patterns in a file and want to read that patterns and search through a whole file of say 70 MB size. whether if i initially create a pattern matching string while... (7 Replies)
Discussion started by: ananan
7 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)