After I compile a C program, when I run it from a C shell script, it does not print out the results.
e.g:
myCFile.c: main(){printf("Hey");}
myCshScript: myCFile
This does not output "Hey" to the terminal window. I am not even sure if it is executed or not.
What should I do to see the... (2 Replies)
Hi All,
I have the following script.
#!/bin/csh
#
# createDATfile.sh
#
cd /export/home/fastserv/bin
source /export/home/fastserv/bin/dbenv.sh
echo `date` >> /export/home/fastserv/bin/log.txt
echo "%INF% Starting send of current FASTSERVICE batch" >>... (4 Replies)
I have an extraordinary problem with a csh script.....(feel free to berate the use of this but I'm modifying an existing bunch of them)
Anyway, I have a master csh script which in turn calls a second csh script. This second csh script is below. Within this second script are two compiled C++... (1 Reply)
Hey I am brand new to this forum and scripting.
I have several documents (1000+) all formated exactly the same. Each document contains 97 lines. I want to pull 3 lines from the documents to populate a file. These 3 lines are line number 9, 24, and 58.
Ok my questions: Instead of using... (3 Replies)
Hey all,
I've only just started using UNIX coding on my Masters project, so am still learning!! The script I've been writing is literally just for me to get used to writing it and seeing what I can do with some data I've been given.
I'm trying to write a script, where the penultimate line... (2 Replies)
Hello all. I suspect this will be a simple case for an experienced csh scripter, but google is getting me nowhere on this one.
I'm trying to get someone else's set of scripts to work for me, and it's choking when the following script gets called:
#! /bin/csh
if (x$1 == x) then
echo ' you... (1 Reply)
Using the C Shell, I'm building a script that will compute simple mathematical computations (addition, subtraction, multiplication, division). The user will enter two integers (operands) on the command line separated by the operation (operator) they wish to perform.
Example of the command line... (7 Replies)
Discussion started by: ksmarine1980
7 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)