Hi,
I have a pipe delimited file with 1 million records. I need to validate each line by counting the number of delimiters, if any line fails to have the specified number of delimiters, taat line has to be sent to a reject file.
Kindly suggest.
if code provided, it is highly appreciated, and... (22 Replies)
Hi,
I would like a shell script that reads all files in a directory and concatenate them. It is not a simple concatenation. The first few lines of the files should not be included. The lines to be included are the lines from where 'START HERE' appears up to the end of the file. For example, I... (4 Replies)
Hello, I have only recently begun with awk and need to write this:
I have an input consisting of a couple of letters, a space and a number followed by various other characters:
fiRcQ 9( )
klsRo 9( ) pause
fiRcQ 9( ) pause
klsRo continue 1
aPLnJ 62( )
fiRcQ continue 5
... and so on
I... (7 Replies)
Hi,
I have an ASCII text file where some of the lines are ending with '+' character.
I have to concatenate the next successive line with those lines having the trailing '+' char by removing that char.
The below awk code has some problems to do this task:
awk '{while(sub(/\+$/,"")) {... (12 Replies)
Hi All,
I have three separate text files which has only one line and i want to combine these lines in one text file which will have three lines.
cat file1.txt
abc
cat file2.txt
1265 6589 1367
cat file3.txt
0.98 0.36 0.5
So, I want to see these three lines in the... (9 Replies)
I have two files:
file-gene_families.txt that contains 30,000 rows of 30 columns. Column 1 is the ID column and contains the
Col1 Col2 Col3 ...
One gene-encoded CBPs ABC 111 ...
One gene-encoded CBPs ABC 222 ...
One gene-encoded CBPs ABC 212 ...
Two gene encoded CBPs EFC... (7 Replies)
I have email headers that look like the following. In the end I would like to accomplish sending each email address to its own variable, such as:
user1@domain.com='user1@domain.com'
user2@domain.com='user2@domain.com'
user3@domain.com='user3@domain.com'
etc...
I know the sed to get rid of... (11 Replies)
Hello All Unix Users,
I am still new to Unix, however I am eager to learn it..
I have 2 files, some lines have some matching substrings, I would like to concatenate these lines into one lines, leaving other untouched. Here below is an example for that..
File 1 (fasta file):
>292183... (6 Replies)
Excuses for the long descriptive title.
I am working with Sindhi and developing a database of all verbal conjugations in that language.
I have generated 2 files:
Verbs.dic contains all the verbs, one verb per line
Inflections.dic contains the verbal conjugations which need to be appended to... (6 Replies)
Hi,
A beginner one.
my input.tab (tab-separated):
h1 h2 h3 h4 h5
item1 grpA 2 3 customer1
item2 grpB 4 6 customer1
item3 grpA 5 9 customer1
item4 grpA 0 0 customer2
item5 grpA 9 1 customer2
objective:
output a file for each customer ($5) with the item number ($1) only if $2 matches... (2 Replies)
Discussion started by: beca123456
2 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)