Sponsored Content
Top Forums Shell Programming and Scripting String concatenation not working in a loop Post 302389817 by Scrutinizer on Tuesday 26th of January 2010 03:10:57 AM
Old 01-26-2010
The difference lies in the use of a pipe if you are using bash. This would work in ksh
Code:
cat "$FILE" | while read LINE ; do
    N=$((N+1))
    STE="$STE""dog"
  done

In bash (contrary to ksh) the last command in the pipe does not run in the current process so the variable STE loses its value once it finishes.

S.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

string concatenation

my input file contains thousands of lines like below 234A dept of education 9788 dept of commerce 8677 dept of engineering How do i add a delimeter ':' after FIRST 4 CHARACTERS in a line 234A:dept of education 9788:dept of commerce 8677:dept of engineering (7 Replies)
Discussion started by: systemsb
7 Replies

2. Shell Programming and Scripting

String handling is not working inside if loop

Hi All, I am comparing two strings inside an if condition if the strings are same then it should go inside the loop else it should execute code given in else part. But there is a but inside my script Even if the if condition is true it is not going inside the loop also it is executing... (4 Replies)
Discussion started by: usha rao
4 Replies

3. Shell Programming and Scripting

String Concatenation

Hi All, I need to concatenate the values in the array into a variable. Currently the code is : for (( i=1 ; i <= $minCount ; i++ )) do var="${var}""${sample_file}" done The output is : /tmp/1/tmp/2/tmp/3/tmp/4/tmp/5/tmp/6/tmp/7/tmp/8/tmp/9/tmp/10 I need a space between... (1 Reply)
Discussion started by: sh_kk
1 Replies

4. Shell Programming and Scripting

String comparison not working inside while loop

Hi, In the code included below, the string comparision is not working fine. Please help while (( find_out >= i )) do file=`head -$i f.out|tail -1` dir=`dirname $file` cd $dir Status="" if ; then Status=`cvs -Q status... (3 Replies)
Discussion started by: sudvishw
3 Replies

5. Shell Programming and Scripting

string comparison not working inside while loop

The string comparison highlighted below is not working fine. Please help: while read line do # Get File name by deleting everything that preceedes and follows Filename as printed in cvs status' output f_name=`echo $line | sed -e 's/^File://' -e 's/ *Status:.*//' | awk '{print $NF}'` ... (4 Replies)
Discussion started by: sudvishw
4 Replies

6. Shell Programming and Scripting

String concatenation

Hi, I have two files. cat file.txt a b c d cat file1.txt j k l m I need the output as a:j (12 Replies)
Discussion started by: nareshkumar522
12 Replies

7. Shell Programming and Scripting

String concatenation problem

Hi there, I'm writing a basic script where I want to make a string of 2 numeric fields from a file, which I have done, but the behavior is rather confusing. I have a file of random values such as: 1 2 3 4 5 6 7 8 9 10 and my awk code is: BEGIN { FS = " " } { str = str $1 $2 } END {... (7 Replies)
Discussion started by: HMChadwick
7 Replies

8. Shell Programming and Scripting

Concatenation in awk not working

Hello I want to achieve the following. However the concatenation is not working mv `ls -ltr *myfile*.log|awk '{print $9}'` `ls -ltr *myfile*.log|awk '{print `date +'%d%m%y%k%M%S'` $9}'` I tried awk '{x=`date +'%d%m%y%k%M%S'` print $x "" $9}' awk '{x=`date +'%d%m%y%k%M%S'`... (2 Replies)
Discussion started by: Chetanz
2 Replies

9. Shell Programming and Scripting

String variable concatenation through loop problem

Hi Team!! Please can anyone tell me why the following line does not work properly? str3+=$str2 it seems that str3 variable does not keep its value in order to be concatenated in the next iteration! Thus when i print the result of the line above it returns the str2 value What i want to do is to... (8 Replies)
Discussion started by: paladinaeon
8 Replies

10. Shell Programming and Scripting

Help with String concatenation

I have a script which is migrated from AIX to Linux & now while running it is no able to concatenate string values The string concatenation step under while loop is not displaying desired result Please find below the piece of code: while read EXT_FILE ; do EXT_FILE=$EXT_FILE.ext.sent echo... (7 Replies)
Discussion started by: PreetArul
7 Replies
print(1)							   User Commands							  print(1)

NAME
print - shell built-in function to output characters to the screen or window SYNOPSIS
ksh print [ -Rnprsu [n]] [arg...] DESCRIPTION
ksh The shell output mechanism. With no flags or with flag - or -, the arguments are printed on standard output as described by echo(1). OPTIONS
The following options are supported: -n suppresses new-line from being added to the output. -R -r (raw mode) ignore the escape conventions of echo. The -R option will print all subsequent arguments and options other than -n. -p causes the arguments to be written onto the pipe of the process spawned with |& instead of standard output. -s causes the arguments to be written onto the history file instead of standard output. -u [ n ] flag can be used to specify a one digit file descriptor unit number n on which the output will be placed. The default is 1. EXIT STATUS
The following exit values are returned: 0 Successful operation. >0 Output file is not open for writing. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
echo(1), ksh(1), attributes(5) SunOS 5.10 15 Apr 1994 print(1)
All times are GMT -4. The time now is 12:17 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy