Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Shell scripting and ls -1 problem
Top Forums Shell Programming and Scripting Shell scripting and ls -1 problem Post 302350434 by cfajohnson on Thursday 3rd of September 2009 08:45:59 PM
Old 09-03-2009
Quote:
Originally Posted by methyl
A more robust approach which preserves space characters in filenames and works for any number of files is:

That is less robust than my suggestion. It will fail if there is a newline (heaven forbid!) in a file name. It also uses an unnecessary external command.

It will also fail if there is leading or trailing whitespace in any filenames. Or if there are any backslashes.

The syntax I used will work no matter what pathological characters are in the filenames.
Quote:
Code:
#!/bin/sh
ls -1 mytest.sh | while read filename


The -1 is not needed because the output of ls is not going to a terminal.

I think you meant:

Code:
ls test | while IFS= read -r filename

Quote:
do
sed -e 's/bob/manny/g' "${filename}" > "${filename}.0"
mv "${filename}.0" "${filename}"

You should check that sed succeeded before wiping the original file:

Code:
   sed -e 's/bob/manny/g' "${filename}" > "${filename}.0" &&
   mv "${filename}.0" "${filename}"[/QUOTE]

 

10 More Discussions You Might Find Interesting

1. Solaris

Problem in for loop of shell scripting in solaris

Hi below is my script for((i=0;i<=$TOTAL;i++)) do echo "IP's created are $s1.$s2.$s3.$s4" s4=`expr $s4 + 1` done where s1,2,3,4 are input varibles below error occurs while running the script syntax error at lin 11: '(' unexpected ... (12 Replies)
Discussion started by: krevathi1912
12 Replies

2. Shell Programming and Scripting

shell scripting problem

her i am trying to edit a database file which is actually a small file holding my friend's name and birthdays My Database DEEPAK 27/08 DEEPIKA 18/02 DHYAN 23/03 DIPANKAR 24/10 SNIGDHO 19/05 AYANNAR 17/12 BHAI 22/09 DEBAN 16/08 JAGADISH 02/06 SUBHOJIT 23/02 TOJO 17/09 SUDHIR 12/09... (1 Reply)
Discussion started by: mobydick
1 Replies

3. Shell Programming and Scripting

Problem - gnome terminal shell scripting

I've a python script named rwe.py. I'm running the program in three separate terminals. If one of the executing program stops . I want to leave the terminal as it is so that i can see the error. i wrote a the below script and used cron to run it every one hour to check if the three programs are... (0 Replies)
Discussion started by: msteve2002
0 Replies

4. Shell Programming and Scripting

Shell Scripting problem

Hi guys, I am a newbie to shell scripting.Please help me to accomplish this task. Its very urgent,I should create a script which will do the following: i) "cd ~joseph/ ; mkdir -p Bing/Bong ;mkdir -p Bing/Bang" and then create 15 ".txt" files with content "Bing Bang Bong" in "Bong"... (1 Reply)
Discussion started by: mahesh_raghu
1 Replies

5. Shell Programming and Scripting

Problem in loops in shell scripting

Hi, #!/bin/ksh $v="" for ((i = 1 ; i <= 5 ; i++ )) do v="THerrFile_$i.err"; grep -i "$i:Error" $v >>oraerror_output.txt done My requirement is to dynamically create variable like THerrFile_1.err,THerrFile_2.err etc. where my grep needs... (5 Replies)
Discussion started by: sudhir_83k
5 Replies

6. Homework & Coursework Questions

Shell Scripting Problem...

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! Hello all,,, I am trying to finish my assignment for my CNET class. I am running into 2 problems... First the "Delete a file" (Option 1) When I run this option everything... (5 Replies)
Discussion started by: ozman911
5 Replies

7. Shell Programming and Scripting

Shell scripting newbie problem

I am trying to create a shell script similar to ls, but which only lists directories. I have the first half working (no argument version), but trying to make it accept an argument, I am failing. My logic is sound I think, but I'm missing something on the syntax, I'm guessing in the bolded line? ... (9 Replies)
Discussion started by: Tibor63
9 Replies

8. Shell Programming and Scripting

Shell Scripting awk Problem

I'm limited in my skills related to *nix and I'm even more limited in my skills related to shell scripting and the use of awk. I have what should be a relatively simple shell script that looks in the /etc/fstab to see if a particular partition exists on the Linux system. The intention of this part... (2 Replies)
Discussion started by: DisabledVet
2 Replies

9. Emergency UNIX and Linux Support

Need support for a shell scripting problem

Hello all, I am facing a weird issue while executing a code below - #!/bin/bash cd /wload/baot/home/baotasa0/sandboxes_finance/ext_ukba_bde/pset sh UKBA_publish.sh UKBA 28082015 3 if then echo "Param file conversion for all the areas are completed, please check in your home directory"... (2 Replies)
Discussion started by: ektubbe
2 Replies

10. Shell Programming and Scripting

Shell scripting problem

Hello. I hava homework for university but i cant do it and i need a little help if someone can help me :) I have to do a linux shell script. Write a script that does the following: 1. Check if there is a directory in / home with myDir name. If not, it creates it. 2. In the directory it... (1 Reply)
Discussion started by: alex4o0o
1 Replies

LEARN ABOUT DEBIAN

printattn

MESSAGES(3)						  libbash messages Library Manual					       MESSAGES(3)

NAME

     messages -- libbash library that implements a set of functions to print standard status messages

SYNOPSIS

     printOK	 [indent]
     printFAIL	 [indent]
     printNA	 [indent]
     printATTN	 [indent]
     printWAIT	 [indent]

DESCRIPTION

   General
     messages is a collection of functions to print standard status messages - those [ OK ] and [FAIL] messages you see during Linux boot process.

     The function list:
	   printOK	    Prints a standard [ OK ] message (green)
	   printFAIL	    Prints a standard [FAIL] message (red)
	   printNA	    Prints a standard [ N/A] message (yellow)
	   printATTN	    Prints a standard [ATTN] message (yellow)
	   printWAIT	    Prints a standard [WAIT] message (yellow)

     Detailed interface description follows.

   indent
     Column to move to before printing.

     Default indent is calculated as TTY_WIDTH-10. If current tty width can not be determined (for example, in case of serial console), it
     defaults to 80, so default indent is 80-10=10

FUNCTIONS DESCRIPTIONS

   printOK [indent]
     Prints a standard [ OK ] message (green)

   printFAIL [indent]
     Prints a standard [FAIL] message (red)

   printNA [indent]
     Prints a standard [ N/A] message (yellow)

   printATTN [indent]
     Prints a standard [ATTN] message (yellow)

   printWAIT [indent]
     Prints a standard [WAIT] message (yellow)

EXAMPLES

     Run a program named MyProg, and report it's success or failure:

	      echo -n 'Running MyProg...'
	      printWAIT
	      if MyProg ; then
		      printOK
	      else
		      printFAIL
	      fi

AUTHORS

     Hai Zaar <haizaar@haizaar.com>
     Gil Ran <gil@ran4.net>

SEE ALSO

     ldbash(1), libbash(1)

Linux								       Epoch								     Linux
All times are GMT -4. The time now is 10:17 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy