Hi,
Can someone help me to figure out whether this code is to write file to /tmp/TIMECLOCK directory or just to asign a variable with "/tmp/TIMECLOCK/name.log_copy.pid" as the string?
I am looking into an old C program and could not figure out where in the code that creates... (1 Reply)
Hi
My requirement is to convert the following to C++
char buffer;
sprintf(buffer,"%s %-50s %6s %-6d %s\n",a.substr(0,5),a.substr(10,20))
Since the buffer is of varying length, i cannot hardcode the value as 90.
i would like to convert the buffer to string object so that it can receive any... (1 Reply)
Hello,
In perl lang, I have create a string (@str) by sprintf but unfortunately when program printed it out, only I could saw a number like 1. Certainly printf doesn't problem. How I can convert a string that are result of sprintf to a common string format??!
Thanks in advance.
PLEASE HELP ME. (2 Replies)
Hi,
I have the below sample code to hash the input number read from file. File will have 16 to 19 digit number and executable hash the number using some logic and returns the hashed value. Each digit in the 16 digit number is converted to a 4 byte value. That if the input is 16digit integer, the... (6 Replies)
I have number/strings like below
input =23412133
output = 234121330000 (depends on the number give at runtime)
i need to padd zeros based on runtime input . i tried below
printf ' %d%04d\n', "23412133";
But the precision 4 is static here how can i pass this as runtime input.
i am... (11 Replies)
I'm using cygwin bash to submit scheduled tasks (kinda like cron jobs) in windows and the following script is giving me grief. I need to format the current time with leading zeros before 10AM for the hour field. In this example, I manually typed in "09:50" instead of using the `printf...`... (2 Replies)
Hi,
Trying to join 2 files with awk (file1 has variable number of fields; file 2 has constant number of fields)
file1:
hook1|AA|BB|CC|DD
hook2|EE|FF
file2:
hook1|11|22
hook2|33|44
hook3|55|66
output:
hook1|11|22|AA|BB|CC|DD
hook2|33|44|EE|FF
hook3|55|66
What I tried so far:... (3 Replies)
Discussion started by: beca123456
3 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)