Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: [BASH] Performance question - Script to STDOUT
Top Forums Shell Programming and Scripting [BASH] Performance question - Script to STDOUT Post 302907630 by Chubler_XL on Monday 30th of June 2014 03:47:39 PM
Old 06-30-2014
I'm not entirely sure what these aliments are supposed to look like but this version fills on either side of each argument to your cliWidth and could be a good example/starting point for you:

Code:
    sP() {
        lentotal=$cliWidth
        lenborders=$(( ${#bl} + ${#br} ))
        argstr="$@"
        lenargs=$(( ${#argstr} - $# + 1))
        SPACES=$(( lentotal - lenborders - lenargs - 2))
        if [ $SPACES -gt $# ]
        then
            # Room for args on single line
            printf -v spc "%*s" $((SPACES / ($# + 1))) ""
            printf -v str "$spc%s" $@
            printf "\r%s %-*s %s" "$bl" $((lenargs + SPACES)) "$str" "$br"
        else
            # Need more than 1 line here
        fi
    }

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

BASH shell script question

I want to make shell script that takes a list of host names on my network as command line arguments and displays whether the hosts are up or down, using the ping command to display the status of a host and a for loop to process all the host names. Im new to shell scripting so Im not quite sure... (3 Replies)
Discussion started by: ewarmour
3 Replies

2. Shell Programming and Scripting

one question for bash shell script

Just one question for bash shell script. In bash script, you can use *.txt to call any files in current folder that ends with .txt, like rm *.txt will remove all txt file in current folder. My question is can you actually remember or use the file name among *.txt, I know file=*.txt will not... (9 Replies)
Discussion started by: zx1106
9 Replies

3. Shell Programming and Scripting

BASH script question

Hi, I want to create a script that gets a filename as an argument. The script should generate a listing in long list format of the current directory, sorted by file size. This list must be written to a new file by the filename given on the command line. Can someone help me with this? ... (6 Replies)
Discussion started by: I-1
6 Replies

4. Shell Programming and Scripting

bash script question

Can anybody be kind to explaing me what the lines below mean ? eval line=$line export $line ] || echo $line (2 Replies)
Discussion started by: jville
2 Replies

5. Shell Programming and Scripting

bash, help with stdout manipulation.

Hey all, Im kind of lost on how to do what I want so I figured I would ask. I want to pipe STDOUT of an app to a log file, but I want to prepend each line of that output with the date and time. Im drawing a complete blank on how to do this?? Any ideas? i.e. output is currently this:... (9 Replies)
Discussion started by: trey85stang
9 Replies

6. Shell Programming and Scripting

Mkbootfs writing to stdout in bash script

Hi, I need to automate some repacking tasks of a boot image for Android When in command line, I can use this command: mkbootfs /path/to/root > /path/to/ramdisk-recovery.cpio;However, if I try to run the command from a shell script under Ubuntu, it fails and outputs to stdout instead of the... (27 Replies)
Discussion started by: Phil3759
27 Replies

7. Shell Programming and Scripting

Question in bash script.

Hi All, I need an assistance with the issue below. I wrote big script in "bash" that automatically install an LDAP on Clients. I'd be happy to know in order to avoid duplication of entries in files, How i can define into the script, if the specific expressions already exist in the file, do... (7 Replies)
Discussion started by: Aviel.shani
7 Replies

8. Shell Programming and Scripting

Question about writing a bash script

Hello, I want to write a bash script to delete the content after '#'. However, if '#' appears in a string with "", ignore this. For example, input file: test #delete "test #not delete" Output file: test "test #not delete" Does anyone know how to write this script? Thanks (1 Reply)
Discussion started by: jeffwang66
1 Replies

9. Shell Programming and Scripting

Bash Script Iterating Question

I am trying to look through one of my directories to remove certain files. I am pretty new to Unix and bash so I just need a little help in starting this. I know I would have to write two loops one to iterate the directories and one to iterate the files. How would I write the loops? (3 Replies)
Discussion started by: totoro125
3 Replies

10. Shell Programming and Scripting

Bash script search, improve performance with large files

Hello, For several of our scripts we are using awk to search patterns in files with data from other files. This works almost perfectly except that it takes ages to run on larger files. I am wondering if there is a way to speed up this process or have something else that is quicker with the... (15 Replies)
Discussion started by: SDohmen
15 Replies

LEARN ABOUT DEBIAN

checkbashisms

CHECKBASHISMS(1)					      General Commands Manual						  CHECKBASHISMS(1)

NAME

       checkbashisms - check for bashisms in /bin/sh scripts

SYNOPSIS

       checkbashisms script ...
       checkbashisms --help|--version

DESCRIPTION

       checkbashisms, based on one of the checks from the lintian system, performs basic checks on /bin/sh shell scripts for the possible presence
       of bashisms.  It takes the names of the shell scripts on the command line, and outputs warnings if possible bashisms are detected.

       Note that the definition of a bashism in this context roughly equates to "a shell feature that is not required to be supported  by  POSIX";
       this means that some issues flagged may be permitted under optional sections of POSIX, such as XSI or User Portability.

       In  cases  where  POSIX	and  Debian  Policy  disagree, checkbashisms by default allows extensions permitted by Policy but may also provide
       options for stricter checking.

OPTIONS

       --help, -h
	      Show a summary of options.

       --newline, -n
	      Check for "echo -n" usage (non POSIX but required by Debian Policy 10.4.)

       --posix, -p
	      Check for issues which are non POSIX but required to be supported by Debian Policy 10.4 (implies -n).

       --force, -f
	      Force each script to be checked, even if it would normally not be (for instance, it has a bash or non POSIX shell shebang or appears
	      to be a shell wrapper).

       --extra, -x
	      Highlight lines which, whilst they do not contain bashisms, may be useful in determining whether a particular issue is a false posi-
	      tive which may be ignored.  For example, the use of "$BASH_ENV" may be preceded by checking whether "$BASH" is set.

       --version, -v
	      Show version and copyright information.

EXIT VALUES

       The exit value will be 0 if no possible bashisms or other problems were detected.  Otherwise it will be the sum of the following error val-
       ues:

       1      A possible bashism was detected.

       2      A file was skipped for some reason, for example, because it was unreadable or not found.	The warning message will give details.

SEE ALSO

       lintian(1).

AUTHOR

       checkbashisms  was originally written as a shell script by Yann Dirson <dirson@debian.org> and rewritten in Perl with many more features by
       Julian Gilbey <jdg@debian.org>.

DEBIAN
								 Debian Utilities						  CHECKBASHISMS(1)
All times are GMT -4. The time now is 06:02 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy