Well here is one fairly simple solution using awk. The main point for me, which the native bash for loop did not allow for, is to be able to pipe the input into the command so I can easily insert this into a more complex pipeline.
I'd be still very interested in a sed based solution. Anyone?
so i have been trying to learn how to manipulate text on my own and have gotten stumped...
let's say i have a text file that says (highly simplified):
people ordinary
How would swap the order of the words..
I know i need to use sed and some kind of back reference but cannot make it... (2 Replies)
im trying to remove all occurences of " OF xyz " in a file where xyz could be any word assuming xyz is the last word on the line but I won't always be.
at the moment I have sed 's/OF.*//'
but I want a nicer solution which could be in pseudo code
sed 's/OF.* (next token)//'
Is... (6 Replies)
Hello-
Trying to add two numbers in a ksh shell scripts and i get this error every time I execute
stat1_ex.ksh: + : more tokens expected
stat1=`cat .stat1a.tmp | cut -f2 -d" "`
stat2=`cat .stat2a.tmp | cut -f2 -d" "`
j=$(($stat1 + $stat2)) # < Here a the like the errors out
echo $j... (3 Replies)
i store the output of ls in a variable FL
$FL=`ls`
$echo $FL
f1.txt f2.txt f3.txt f4.txt f5.txt script.sh script.sh~ test.txt
now if i want to retrive the sub-string "f1.txt" from $FL we were taught that this is what i have to do
$set $FL
$echo $1
f1.txt
and echo $2 would give... (1 Reply)
Hi all,
I have a variable with value
DateFileFormat=NAME.CODE.CON.01.#.S001.V1.D$.hent.txt
I want this variable to get replaced with :
var2 is a variable with string value
DateFileFormat=NAME\\.CODE\\.CON\\.01\\.var2\\.S001\\.V1\\.D+\\.hent\\.txt\\.xml$
Please Help (3 Replies)
Hey everyone, i needed some help with this one. We move into a new file system (which should be the same as the previous one, other than the name directory has changed) and the script worked fine in the old file system and not the new. I'm trying to add the results from one with another but i'm... (4 Replies)
Hi All,
Im writing a shell script in which I want to get the folder names in one folder to be used in for loop.
I have used:
packsName=$(cd ~/packs/Acquisitions; ls -l| awk '{print $9}')
echo $packsName
o/p: opt temp user1 user2
ie. Im getting the output as a string.
But I want... (3 Replies)
I have a file which is
DFDG
START
DSFDS
DSDS
XXX
END (VIO)
AADD
START
SDSD
FGFG
END
and I have to print the lines between START and END (VIO). In the files there are multiple places where START would be followed by END with few lines in between but I need to print only if START is... (18 Replies)
Hi guys,
I'm wondering what the best way would be to reverse words in a string based on certain characters.
For example:
echo Word1Word2Word3Word4 | sed '
/\n/ !G
s/\(Word.\)\(.*\n\)/&\2\1/
//D
'
This returns:
Word4Word3Word2Word1
I'm no sed expert but... (2 Replies)
I have a String class with a function that reads tokens using a delimiter.
For example
String sss = "6:8:12:16";
nfb = sss.nfields_b (':');
String tkb1 = sss.get_token_b (':');
String tkb2 = sss.get_token_b (':');
String tkb3 = sss.get_token_b (':');
String tkb4 =... (1 Reply)
Discussion started by: kristinu
1 Replies
LEARN ABOUT DEBIAN
subst
subst(3tcl) Tcl Built-In Commands subst(3tcl)__________________________________________________________________________________________________________________________________________________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(3tcl), eval(3tcl), break(3tcl), continue(3tcl)KEYWORDS
backslash substitution, command substitution, variable substitution
Tcl 7.4 subst(3tcl)