I don't know if the code is incorrect or my working environment does not support shell expansion.
Anyway, using file descriptors instead of redirection is new to me.
Thanks to Lem, the lower one is what I want.
Thanks to bakunin and Lem for quick reply.
Hi All,
I am looking for a solution to capture any ASCII control character in a file
( where the ASCII control character is in decimal value from 0 to 31 and 127
( Hex value from 00 to 1F and 7F ) ) by returning any affected lines.
The intended good file should contain "ASCII printable... (5 Replies)
Hi All,
I am very new to Shell scripting...
I got a requirement.
I will have few text files(data files) in a particular directory. they will be with .txt extension. With same name, but with a different extension control files also will be there. For example, Sample_20081001.txt is the data... (4 Replies)
can any one say about command to find "^M" (Control M)characters in a unix text file.
^M comes when a file ftped from windows to unix without using bin mode.
I need the command to find lik this,
ex.txt:
------------------------------
...,name,time^M
go^M
...file,end^M... (5 Replies)
Hi,
I have one file, say file 1, that has data like below where 19900107 is the date,
19900107 12 144 129 0.7380047
19900108 12 168 129 0.3149017
19900109 12 192 129 3.2766666E-02
... (3 Replies)
I am getting error when loading data file using ctl file. I get this error only when there is special character.
Below is some data.
DataFile=>
company_id|ciu_id|english_name|iso_country_code|active|partner_name
1-2JT-122||Expert Järvenpää|FI|A|Expert Järvenpää
Control File=>
LOAD DATA... (1 Reply)
In a 10-50GB file , at end of file there is Control-z character
tried the below options,
1. perl -p -i -e 's/^Z//g' new.txt
2. perl -0777lwi -032e0 new.txt
and Sed command, dos2unix etc
it takes more time to remove the control-z. need a command or perl program to GO TO LAST LINE OF FILE ... (7 Replies)
in a file we are getting control character in a file , is there any way that they can be removed once we have the file
for eg.
BEGIN-PROCEDURE INITIALIZE
^M
LET #row_count = 0^M
^M
^M (2 Replies)
Hi All,
i have a requirement where i need to format the input RAW file ( which is CSV) by using another mapping file(also CSV file). basically i am getting feed file with dynamic headers by using mapping file (in that target field is mapped with source filed) i have to convert the raw file into... (6 Replies)
Hello,
I have a file with the below contents :
Policy Name: Backup_bkp
Policy Type: Catalog_bkp
Active: yes
Effective date: 08/07/2013 02:02:12
Mult. Data Streams: no
Client Encrypt: no
Checkpoint: no
Policy Priority: ... (11 Replies)
Discussion started by: rahul2662
11 Replies
LEARN ABOUT CENTOS
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)