The purpose is to automate running this script using a tool. So the manual activity of changing the file which is passed as argument is impossible.
Do you mean those arguments are things you'd usually be typing into the script? < expects a filename, to feed text into it you'll want a pipe. Maybe something like:
It's also important to note that your requirements are broken, these won't work:
...because you cannot put quotes inside quotes like that. You could do this:
...as long as you're aware that variables don't expand inside single quotes. You couldn't do 'DISPLAY QS("$shellvariable")' and expect $shellvariable to be substituted.
If you can do "DEFINE QL('$shellvariable')" that's quite okay.
You can also escape things with \ inside double-quotes like "DEFINE QL(\"value\")"
Last edited by Corona688; 11-14-2014 at 11:36 AM..
I've written a script (bgrep) for a more advanced grep command (& attached a cut down version below). I'm trying allow all grep options to be used, or in any combination.
The script works fine if I type say
bgrep -i -files product
it will return a non-case sensitive list of matches for... (3 Replies)
I am playing around with Perl and wrote the script below that is executed from the command line, it will split data up in a file based on a value supplied. When executed you provide two arguments - the file that contains the data to be split and the character you want to split by. It works as... (4 Replies)
All,
I have a cron job script that receives several command line arguments. At some point if there are validation problems and the job cannot be run, it duplicates the entire command line into a temporary text file which is later executed as a script. Unfortunately when I pass the list of received... (7 Replies)
hi I am new to shell programming.....my question is while running one of my shell program it stops in between to accept input from the user and proceeds furthur after giving input....I want to know whether I can set this input through some files so that the shell acript reads the input from the... (10 Replies)
Hi,
I am writing a script, which is invoked from other system using ssh.
I have problems reading the arguments passing to the script. If the argument has a space in it (ex "rev 2.00"), the script considers "rev" as 1 argument and "2.00" as another. Instead i want "rev 2.00" to be considered... (5 Replies)
Hi Gurus,
i have one requirement in unix script, i have a file called abc.txt in that few lines are there with the empid, i need to read each line and pass to .sql script.
ex:
abc.txt
2345
2346
1243
1234
i need to pass these arguments to .sql script rom unix
ex:
select * from... (1 Reply)
Hi!
I have a python script that requires arguments and these arguments are file paths. This script works fine when executed like this:
/my_python_script "file_path1" "file_path2"
(i added quotes as some file names may have weird characters)
the issue happens when i launch my python script... (14 Replies)
Hi I need to pass comma seperated arguments to a perl script?
It is like:
Exect.pl -d GUI1,GUI2,GUI3
and I need to store these argsGUI1,GUI2,GUI3 in an array.
can anyone suggest how to do that: (1 Reply)
Hi,
I wanted to pass an argument to a bash script. So that the argument is used inside the awk command inside the bash script.
I know the noraml way of passing argument to a bash script as below :
sh myScript.sh abc
Inside the bash script i can use like this
myArg1=$1
wc $myArg
But... (8 Replies)
i want to be able to pass arguments to a php script if it is being piped:
cat myphpscript.php | php - $1 $2 $3 blah blah
This usually works for other script languages...i.e. ruby:
cat myrubyscript.rb | ruby - $1 $2 $3 blah blah
so my question is, how can i pass arguments to my php... (1 Reply)
Discussion started by: SkySmart
1 Replies
LEARN ABOUT BSD
unifdef
UNIFDEF(1) General Commands Manual UNIFDEF(1)NAME
unifdef - remove ifdef'ed lines
SYNOPSIS
unifdef [ -t -l -c -Dsym -Usym -idsym -iusym ] ... [ file ]
DESCRIPTION
Unifdef is useful for removing ifdef'ed lines from a file while otherwise leaving the file alone. Unifdef is like a stripped-down C pre-
processor: it is smart enough to deal with the nested ifdefs, comments, single and double quotes of C syntax so that it can do its job, but
it doesn't do any including or interpretation of macros. Neither does it strip out comments, though it recognizes and ignores them. You
specify which symbols you want defined -Dsym or undefined -Usym and the lines inside those ifdefs will be copied to the output or removed
as appropriate. The ifdef, ifndef, else, and endif lines associated with sym will also be removed. Ifdefs involving symbols you don't
specify are untouched and copied out along with their associated ifdef, else, and endif lines. If an ifdef X occurs nested inside another
ifdef X, then the inside ifdef is treated as if it were an unrecognized symbol. If the same symbol appears in more than one argument, only
the first occurrence is significant.
The -l option causes unifdef to replace removed lines with blank lines instead of deleting them.
If you use ifdefs to delimit non-C lines, such as comments or code which is under construction, then you must tell unifdef which symbols
are used for that purpose so that it won't try to parse for quotes and comments in those ifdef'ed lines. You specify that you want the
lines inside certain ifdefs to be ignored but copied out with -idsym and -iusym similar to -Dsym and -Usym above.
If you want to use unifdef for plain text (not C code), use the -t option. This makes unifdef refrain from attempting to recognize com-
ments and single and double quotes.
Unifdef copies its output to stdout and will take its input from stdin if no file argument is given. If the -c argument is specified, then
the operation of unifdef is complemented, i.e. the lines that would have been removed or blanked are retained and vice versa.
SEE ALSO diff(1)DIAGNOSTICS
Premature EOF, inappropriate else or endif.
Exit status is 0 if output is exact copy of input, 1 if not, 2 if trouble.
BUGS
Does not know how to deal with cpp consructs such as
#if defined(X) || defined(Y)
AUTHOR
Dave Yost
4.3 Berkeley Distribution April 29, 1985 UNIFDEF(1)