12-03-2009
Replace field when only "-" occurs on a random basis
I have a file in which "-"(by itself and nothing else) occurs in different fields in each record(sometimes in the 3 field, sometime in the 20th field, some time in the 100th field....etc). Also there are field of the format "abc-def". How do I replace fields that have just "-" with number zero. sed replaces all the "-", like "abc-def" would become "abc0def", I don't want that to happen.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I guess it was getting a little messy on the other post so here goes:
Link to previous post for Question:
https://www.unix.com/shell-programming-scripting/111338-awk-replace-particular-field.html
Continuation of Question
hey i was messing around a bit ... made me wonder...
If the... (1 Reply)
Discussion started by: VGR
1 Replies
2. UNIX for Dummies Questions & Answers
When I do a listing in one particular directory (ls -al) I get:
total 43456
drwxrwxrwx 2 root root 4096
drwxrwxrwx 3 root root 4096
-rwxrwxr-x 1 nobody nobody 3701594
-rwxrwxr-x 1 nobody nobody 3108510
-rwxrwxr-x 1 nobody nobody 3070580
-rwxrwxr-x 1 nobody nobody 3099733
-rwxrwxr-x 1... (1 Reply)
Discussion started by: proactiveaditya
1 Replies
3. Shell Programming and Scripting
do U know how to replace the registered trademark "®" symbol or
trade Mark "™" "with Spaces in UNIX (4 Replies)
Discussion started by: MMeari
4 Replies
4. Shell Programming and Scripting
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
Can someone... (7 Replies)
Discussion started by: shis100
7 Replies
5. UNIX for Dummies Questions & Answers
Hi all,
I have this text file containing 9 columns separated by space. The 8th columns contains the numbers.
C1 C2 C3 C4 C5 C6 C7 C8 C9
er rt yt gh iu nk il 0.07 xs
yt lr ty bg iu zk nh 0,0005 lt
...etc.
I want to replace the comma with full stop only in 8th coloumn.
the output... (8 Replies)
Discussion started by: Unilearn
8 Replies
6. UNIX for Advanced & Expert Users
I saw some recent posts where I thought the terms "field" and "column" were being misused. I work with data a lot, and have my opinions. I'm wondering if those opinions are correct.
***** Rows seem clear - I don't think there is any controversy about what a row is, either for database or text... (10 Replies)
Discussion started by: hanson44
10 Replies
7. Shell Programming and Scripting
Hi Experts,
I have a string with colon delimited, want 2nd colon to be changed to a pipe.
data:
101:8:43:4:72:14:41:69:85:3:137:4:3:0:4:0:9:3:0:3:12:3:
I am trying with sed, but can change only 1 occurance:
echo "101:8:43:4:72:14:41:69:85:3:137:4:3:0:4:0:9:3:0:3:12:3:" | sed 's/:/|/2'... (5 Replies)
Discussion started by: rveri
5 Replies
8. Shell Programming and Scripting
I made a script that sends an email with one long line, line looks like this.
UY453;HJ345;BM342;JH526;HJ245;HJ234;NM235;........JK453;SD245;
The mail has about 200 of those IDs in one line, each ID is separtated by ";".
The problem is that there is a random exclemation mark and it... (3 Replies)
Discussion started by: ajetangay
3 Replies
9. Shell Programming and Scripting
I'd like to put paragraph breaks \n\n randomly between 5 - 10 occurrences of the dot character (.), for an entire text file. How to do that?
In other words, anywhere between every 5 -10 sentences, a new paragraph will generate. There are no other uses of the (.) except for sentence breaks in... (11 Replies)
Discussion started by: p1ne
11 Replies
10. Shell Programming and Scripting
Hello.
System : opensuse leap 42.3
I have a bash script that build a text file.
I would like the last command doing :
print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt
where :
print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 Replies
LEARN ABOUT OPENDARWIN
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 {$a}} |
return ``xyz {p} q {r}'', not ``xyz {p} q {r}''. |
When command substitution is performed, it includes any variable substitution necessary to evaluate the script. |
set a 44 |
subst -novariables {$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)