Also:
So, for a file p1:
Running as directed, produces:
My current preference is to use Getopt::Euclid because it generates a man page and a command line parser. I would not call it easy, so Getopt::Std is preferable from that respect. The option -s is probably the easiest, but the man page should be read carefully ... cheers, drl
I had posted previously about this problem I had.
I have multiple text files with hundreds of lines of the following type:
2000001 34 54 234 2000001
32 545 2000001 -2000001 77 2000001 44 2000001 998 2000001
77 32 2000001 45 23 111 89
98 75 23 34 999
.
.
.
etc...
What I wanted was... (2 Replies)
i'm confused what this means.
i was asked to design a menu or command line option driven script that reads out of a DB and displays info such as
read_data.pl -u <user> -e <event>
which would print commands run by <user>with the <event> in the db.
any suggestions? i've been using... (2 Replies)
so in unix this command works works and shows me a list of directories
find . -name \*.xls -exec dirname {} \; | sort -u | > list.txt
but when i try running a perl script to run this command
my $query = 'find . -name \*.xls -exec dirname {} \; | sort -u | > list.txt';... (2 Replies)
so i have 3 options - i, d, a - for id, date, and arguments
therefore
perl test.pl -i admin -d 11/1/1
would show me the results of a table with the id admin on the date of 11/1/1.
i would like
perl test.pl -i admin -d 11/1/1 -a
to show me results of a table with the id, admin on the... (0 Replies)
Hello everyone,
I have a perl script which takes various command line options from user like :
test.pl -i <input_file> -o <output_file> -d <value> -c <value>
Now I have multiple input files in a directory:
<input_file_1>
<input_file_2>
<input_file_3>
<input_file_4>
.....
....
...... (6 Replies)
i am a beginner, i want to make a program that takes any command line arguments... and print it out in reverse.
ie. if the command line argument is "thanks for helping me"
i want it to output "me helping for thanks" :D
i have tried using the reverse command, but i cant get it working!!
... (3 Replies)
Hi All,
I am trying to execute the following tar command with two --exclude options to suppress extract of the two directories specified.
Do I need to single quote the directory paths ??
Many thanks for your help.
The relevant code excerpt from the script is:
cd /var/www/${SITE}
... (7 Replies)
Hi all!
I have a data set in this tab separated format : Label, Value1, Value2
An instance is "data.txt" :
0 1 1
-1 2 3
0 2 2
I would like to parse this data set and generate two files, one that has only data with the label 0 and the other with label -1, so my outputs should be, for... (1 Reply)
Hi All,
I have written a menu driven bash shell script.
Current Output is as below:
-------------------------------------
Main Menu
-------------------------------------
Option 1
Option 2
Option 3
Option 4
Exit
=====================================
Enter your... (3 Replies)
I am looking for help in processing of those options: '-n' or '-p'
I understand what they do and how to use them.
But, I would like to use them with more than one file (and without any shell-loop; loading the 'perl' once.)
I did try it and -n works on 2 files.
Question is:
- is it possible to... (6 Replies)
Discussion started by: alex_5161
6 Replies
LEARN ABOUT MOJAVE
subst
subst(n) Tcl Built-In Commands subst(n)
__________________________________________________________________________________________________________________________________________________NAME
subst - Perform backslash, command, and variable substitutions
SYNOPSIS
subst ?-nobackslashes? ?-nocommands? ?-novariables? string
_________________________________________________________________DESCRIPTION
This command performs variable substitutions, command substitutions, and backslash substitutions on its string argument and returns the
fully-substituted result. The substitutions are performed in exactly the same way as for Tcl commands. As a result, the string argument
is actually substituted twice, once by the Tcl parser in the usual fashion for Tcl commands, and again by the subst command.
If any of the -nobackslashes, -nocommands, or -novariables are specified, then the corresponding substitutions are not performed. For
example, if -nocommands is specified, command substitution is not performed: open and close brackets are treated as ordinary characters
with no special interpretation.
Note that the substitution of one kind can include substitution of other kinds. For example, even when the -novariables option is speci-
fied, command substitution is performed without restriction. This means that any variable substitution necessary to complete the command
substitution will still take place. Likewise, any command substitution necessary to complete a variable substitution will take place, even
when -nocommands is specified. See the EXAMPLES below.
If an error occurs during substitution, then subst will return that error. If a break exception occurs during command or variable substi-
tution, the result of the whole substitution will be the string (as substituted) up to the start of the substitution that raised the excep-
tion. If a continue exception occurs during the evaluation of a command or variable substitution, an empty string will be substituted for
that entire command or variable substitution (as long as it is well-formed Tcl.) If a return exception occurs, or any other return code is
returned during command or variable substitution, then the returned value is substituted for that substitution. See the EXAMPLES below.
In this way, all exceptional return codes are "caught" by subst. The subst command itself will either return an error, or will complete
successfully.
EXAMPLES
When it performs its substitutions, subst does not give any special treatment to double quotes or curly braces (except within command sub-
stitutions) so the script
set a 44
subst {xyz {$a}}
returns "xyz {44}", not "xyz {$a}" and the script
set a "p} q {r"
subst {xyz {$a}}
returns "xyz {p} q {r}", not "xyz {p} q {r}".
When command substitution is performed, it includes any variable substitution necessary to evaluate the script.
set a 44
subst -novariables {$a [format $a]}
returns "$a 44", not "$a $a". Similarly, when variable substitution is performed, it includes any command substitution necessary to
retrieve the value of the variable.
proc b {} {return c}
array set a {c c [b] tricky}
subst -nocommands {[b] $a([b])}
returns "[b] c", not "[b] tricky".
The continue and break exceptions allow command substitutions to prevent substitution of the rest of the command substitution and the rest
of string respectively, giving script authors more options when processing text using subst. For example, the script
subst {abc,[break],def}
returns "abc,", not "abc,,def" and the script
subst {abc,[continue;expr {1+2}],def}
returns "abc,,def", not "abc,3,def".
Other exceptional return codes substitute the returned value
subst {abc,[return foo;expr {1+2}],def}
returns "abc,foo,def", not "abc,3,def" and
subst {abc,[return -code 10 foo;expr {1+2}],def}
also returns "abc,foo,def", not "abc,3,def".
SEE ALSO
Tcl(n), eval(n), break(n), continue(n)
KEYWORDS
backslash substitution, command substitution, variable substitution
Tcl 7.4 subst(n)