Here are a couple of files related to some ideas I have had on providing a mechanism for navigation across a set of "favorite directories."
I would appreciate any comment on the approach and any other useful recommendations.
Please visit my project home page on sourceforge Bash Navigator Home... (0 Replies)
Suppose i have a file like this:
#bla bla
#bla bla bla bla bla
Bla
BLA
BLA BLA #bla bla
....
....
how can i remove all comments from every line,even if they are behind commands or strngs that are not comments?
any idea how i could do that using awk? (2 Replies)
I'm trying to make a simple search script but cannot get it right. The script should search for keywords inside files. Then return the file paths in a variable. (Each file path separated with \n).
#!/bin/bash
SEARCHQUERY="searchword1 searchword2 searchword3";
for WORD in $SEARCHQUERY
do
... (6 Replies)
I must write a script to change all C++ like comments:
// this is a comment
to this one
/* this is a comment */
How to do it by sed? With file:
#include <cstdio>
using namespace std; //one
// two
int main() {
printf("Example"); // three
}//four
the result should be: (2 Replies)
Hello All,
I need a bash shell script to find out a day from the date.For example we give the date(20100227/YYYYMMDD) then we get the day 'Saturday'.
Thanks in advance,
Satheesh (5 Replies)
Hi All,
I wanted to show on stdout that a file was found right after it happens due to indicate the activity of long search. Further more I want to store the result of the find in a file.
I have tried this:
echo -n "Searching"
find . -name Makefile -type f -print -exec echo -n "." \; >... (16 Replies)
#!/bin/bash
timevar=`date +%F_”%H_%M”` #-- > Storing Date and Time in a Variable
get_contents=`cat urls.txt` #-- > Getting content of website from file. Note the file should not contain any http:// as its already been taken care of
######### Next Section Does all the processing #########
for i... (0 Replies)
Hi, I'm trying to write a script to search through my computer and
find all .jpg files and put them all in a directory. So far I have
this:
for i in `find /home -name '*.jpg' ` ; do mv $i home/allen/Pictures/PicturesFound ; done
When I run it, I get this error (this is only part of it, it... (2 Replies)
Hi All,
I am very new to UNIX and I have tried this for a longtime now and unable to crack it....
There is a file that is continuously updating. I need to search for the string and find the date @ which it updated every day.....
eg:
String is "work started"
The log entry is as below:
... (1 Reply)
I would like to remove comments from a bash script. In addition, I would like to remove lines that consist of only white spaces, and to remove blank lines.
#!/bin/bash
perl -pe 's/ *#.*$//g' $1 | grep -v ^]*$ | perl -pe 's/ +/ /g' > $2
#
# $1 INFILE
# $2 OUTFILE
The above code... (10 Replies)
Discussion started by: LessNux
10 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)