I am trying to write a short block of code that takes a partial filename as input from the command line, then searches multiple remote servers for any file that matches the pattern. If the pattern is found, I would like to return the value of an environment variable from the *remote* server.
... (0 Replies)
Hi, I am currently building a PHP/MySQL database that handles our offices newsletters. Now everything works great in the alpha with only a few names in the list, but I anticipate that once we fill it up (around 10,000) that this will not work from the PHP. I already have the script echo the... (0 Replies)
I have a stream of data come to a server and store in a file (datafile). This stream of data contain a lot of information. Data could come in every second or different frequency of times.
I like to retrieve a certain text string as the data come in. All data information will come with the... (1 Reply)
First of all want to apologize for such a simple question. Very "new" to UNIX and have just taken a small intro class.
I need to pull back YYYYMMDD and store it in a field to be used later. I figured out date "+%Y%m%d" returns the date in that format, just not sure how to store it.
I am... (7 Replies)
Hey guys, i just started shell programming and i have a question. I am working on a simple inventory project and one of the problems which i am unable to solve would be how i am going to extract the data i need from a text file(which will be my database) and then put it inside the executable to be... (5 Replies)
Hi,
We are using KSH.
I was able to write a script where a mail is sent to the concerned persons and this is working perfectly file. I need to give a different color to a part of the data in the mail which. The script written is as follows;
(echo "From: $REPLY"
echo "To: $DLIST"
echo... (6 Replies)
Hi ,
I need to retreive the file name in an variable on the ftp server.Can you guy please let me know how can i do that.I need some thing like
connect to ftp <<eof
new_variable=`ls *_1_AUDIT.txt *_2_AUDIT.txt` (but on a ftp server)
mget $new_variable
>>eof (1 Reply)
Hello,
I am new to UNIX.
My Requirement: Need to connect to Oracle database from UNIX and execute an SELECT statement and store the records in a flatfile of Comma delimiter.
What I have Succeeded: I was able to connect to Oracle from UNIX.
Problem: I cannot fetch multiple... (3 Replies)
hi,
i want to send last 10 lines of a file.. How can acheive that.
i tried this, but it is not working.
mailx -s "$SUBJ" $MAIL_ID < $LOGFILE|tail -10
Can somebody guide me... (2 Replies)
Hi,
I have one file 1.txt with one field consist of following Ids (shortlisted 10 but showing 3 here):
00052
00184
00607
and then second file 2.txt with three fields (very big file):
00052 00184 12.73062
00052 00598 13.51205
00052 00599 13.92554
00052 00600 13.73358... (2 Replies)
Discussion started by: bioinfo
2 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)