$1 $2 are positional parameters of the shell.
Use "quotes" around them to substitute them by their values, but protect the result from further expansions.
Use 'ticks' to get a $1 $2 literally.
For your sed script you want the substitution.
Code:
out_file=$(echo "$in_file" | sed "s/$1/$2/g")
You can also write a concatenations of 'string' and "string with $var":
Code:
out_file=$(echo "$in_file" | sed 's/'"$1"'/'"$2"'/g')
A concatenation of four strings. The sed sees one string and no quotes. (Tip: use echo to show it on the screen!)
The $var in the echo command should be in "quotes" as well, to have the variable substitution but no further expansions.
HPUX11.0/Korn Shell
I have an old script that takes in a series of arguments when its called. The script is really more of a common set of functions that gets called by other scripts as needed. I have been asked to make this into a menu driven script to rollout to app support for their use during... (2 Replies)
Hello,
I am using the Bourne shell.
I am trying to understand the concept of positional parameters.
I do understand that positional parameters:
1. Are initialized by shell
2. Have a max of 9 parameters ($1 to $9)
3. Have no limit on the number of arguments
4. Can be rearranged... (15 Replies)
I need to get file names from commandline arguments, it may be any no of arguements, Using for loop i got but how do i display it, bcoz $i will give the number i is assigned $$i is not working either $($i), i need the names of the files got in the arguement (2 Replies)
Hi,
Can any one provide the Unix command to reset the positional parameters?
Please see the below example where i have to pass 2 parameters to Shell1.sh.
Step1) . ./Shell1.sh 2 3
successfully executed, Then i executed(next step only) the same shell script again,this time no... (4 Replies)
Hi all,
I have one small requirment...
I have prepared one script. we have to pass two possitional parameters to the script. What I want to do is if the parameters are not passed then i dont want the script to start the process...
For ex:
$ ./a.sh parm1 parm2
#Here, it can start... (7 Replies)
In a Bash script I used getopts command to let a user does something regards to the selected options. The question is: How do you find out what is the name of the file that user inserted in the command line like the following:
The good part is this file is always the last argument in the... (2 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
STEP 1: Create a Bash shell script (myscript) inside the a2 directory. The script should allow the user to pass... (3 Replies)
Hi,
I have a script which will be executed using the below command,
bin/nutch crawl urls -dir /data/test/
bin/nutch - Script file
crawl, urls, /data/test/ - Parameters
-dir - Option
The above script should executed from a shell script named test.sh. I have the below code to execute... (2 Replies)
I am trying to code an if statement that accepts two parameters and see if those parameters are in another file called teledir.txt. If it already exists in the file, it is to say "Entry Exists". If not, I add it to the file and say "Entry Added". This is the code I have so far:
if ; then
... (1 Reply)
Discussion started by: Eric7giants
1 Replies
LEARN ABOUT DEBIAN
ch_lab
CH_LAB(1) BSD General Commands Manual CH_LAB(1)NAME
ch_lab -- change/copy label files
SYNOPSIS
ch_lab [-S frame spacing] [-start time] [-end time] [-ext file extension] [-extract file] [-extend time] [-f sample frequency]
[-lf sample frequency] [-itype file type] [-key key file] [-lablist list of labels] [-length time] [-map map file]
[-name feature name] [-class class] [-o output file] [-otype file type] [-pad high | low] [-pos list of labels] [-q timestep]
[-range range] [-sed sed file] [fl shift time delta] [-style output stype] [-vocab vocab file] [-verify] [-nopath] [-base] [-combine]
[-divide] [-h] input files ...
DESCRIPTION
ch_lab copies from one or more input label files to an output label file, optionally performing various operations along the way.
The following option flags are recognized:
-h Print a summary of usage to standard output.
-S frame spacing
frame spacing of output
-start time
start time, in seconds, for label extraction
-end time
end time, in seconds, for label extraction
-ext file extension
filename extension to use for multiple output files
-extract file
extract a single file from a list of files
-extend time
extend track file by time seconds beyond label file
-f sample frequency
sample frequency of label file
-lf sample frequency
sample frequency for labels
-itype file type
type of input label file: esps htk ogi
-key key file
key label file
-lablist list
list of labels to be considered as blank
-length time
length of track produced, in seconds
-map map file
label mapping file
-name feature name
eg. Fo Phoneme
-class class
name of class defined in op file
-o output file
output file name
-otype file type
output file type: xmg, ascii, esps, htk
-pad high | low
pad with high or low values
-pos list
list of labels to be regarded as 'pos'
-q timestep
quantize label timings to nearst value
-range range
difference between high and low values
-sed sed file
perform regex editing using sed file
fl shift time delta
shift the times of the labels
-style output style
output style e.g. track
-vocab file
file containing list of words in vocabulary
-verify
check that only labels in vocab file are in label file
-nopath
ignore pathnames when searching label lists
-base
use base filenames for lists of label files
-combine
-divide
SEE ALSO ch_wave(1)ch_track(1)Edinburgh Speech Tools April 5, 2001 Edinburgh Speech Tools