Hi
How can i dynamically read files names from a list file and execute them from a single shell script.
Please help its urgent
Thanks in Advance (4 Replies)
Hi,
I want to be able to list all the names in a file which begin with a capital letter, but I don't want it to list words that begin a new sentence. Is there any way round this?
Thanks for your help. (1 Reply)
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)
I want to write a shell script that will rename all the file names to today's date attached to it..
so for example i have a file names like
file1.sales.20081201.txt.c
zbrs.salestxtn.20091101.txt.inn
then it will rename both the files with todays date to it so the file names get changed... (1 Reply)
I have 2 text files like
________________________________
Company Name:yada yada
ADDRESS:some where, CITY,STATE
CONTACT PEOPLE:first_name1.last_name1,first_name2.last_name2,first_name3.last_name3
LEAD:first_name.last_name
________________________________
&
Data file2 ... (1 Reply)
Hi,
I have lets say 10 files , I need to process them one by one.
So I need a command to get one file name at a time to process it into a variable
Example
Files
P1111.dat
P3344.dat
S344.dat
...
v_file_name = 'p111.dat' .. I will rename it to something after processing
... (1 Reply)
I have a .CSV file (frequency - weekly) whose header contains the year-week value in two of the columns which keeps changing every week. For an instance please see below.
Column1,Column2,Column3,Column4,Column5,Column6,Column7,Column8,Column9,Column10,Column11,Column12,Column13,201420... (4 Replies)
Good afternoon all,
I want to ask how to change some letter in my file with other letter in spesific line
eg.
data.txt
1
1
1
0
0
0
0
for example i want to change the 4th line with character 1.
How could I do it by SED or AWK.
I have tried to run this code but actually did not... (3 Replies)
As part of a bash the below line strips off a numerical prefix from directory 1 to search for in directory 2.
for file in /home/cmccabe/Desktop/comparison/missing/*.txt
do
file1=${file##*/} # Strip off directory
getprefix=${file1%%_*.txt}
... (5 Replies)
I am downloading a zip file that contain files that are very long. I am trying to process them, but cannot. I can move the files from one directory to another at the shell prompt, but not within a shell script, I get a stat error.
The files look somewhat like this;
... (5 Replies)
Discussion started by: trolley
5 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)