Read line, issue with leading - and {}'s Post: 302932396

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

while read loop preserving leading whitespace

Hi all, I've been trying to get this to work for ages to no avail. I've searched this site and googled but cannot find a satisfactory answer. I've got a while loop, like this while read line do echo "$line" done < file_name Now, my problem is that most of the lines in the file...

2. Shell Programming and Scripting

remove leading spaces from a line

Hi friends I need some help, I have a file which looks as follows TEMP 014637065 014637065 517502 517502 RTE 517502 517502 RTE AWATER_TEST 12325 23563 588323 2323 5656 32385 23235635 ANOTHER_TEST 12 5433 FTHH 5653 833 TEST 123 123 3235 5353 353 53 35 353 535 3 YTERS GJK JKLS ...

3. Shell Programming and Scripting

ksh - read file with leading spaces

Hi, Could someone has any suggestions on this? When read a line from a file, I need to check the first char in the line, it could be a space or any char. But the leading spaces are removed by read. Thanks.

4. Shell Programming and Scripting

bash: read file line by line (lines have '\0') - not full line has read???

I am using the while-loop to read a file. The file has lines with null-terminated strings (words, actually.) What I have by that reading - just a first word up to '\0'! I need to have whole string up to 'new line' - (LF, 10#10, 16#A) What I am doing wrong? #make file 'grb' with...

5. Shell Programming and Scripting

While loop read line Issue

Hi I am using while loop, below, to read lines from a very large file, around 400,000 rows. The script works fine until around line 300k but then starts giving incorrect result. I have tried running the script with a smaller data set and it works fine. I made sure to include the line where...

6. Shell Programming and Scripting

Multi Line 'While Read' command issue when using sh -c

Hi, I'm trying to run the following command using sh -c ie sh -c "while read EachLine do rm -f $EachLine ; done < file_list.lst;" It doesn't seem to do anything. When I run this at the command line, it does remove the files contained in the list so i know the command works ie...

7. Shell Programming and Scripting

while read LINE issue

Hi, This is the script and the error I am receiving Can anyone please suggest ? For the exmaple below assume we are using vg01 #!/bin/ksh echo "##### Max Mount Count Fixer #####" echo "Please insert Volume Group name to check" read VG lvs |grep $VG | awk {'print $1'} > /tmp/audit.log ...

8. Shell Programming and Scripting

[BASH] read 'line' issue with leading tabs and virtual line breaks

Heyas I'm trying to read/display a file its content and put borders around it (tui-cat / tui-cat -t(ypwriter). The typewriter-part is a 'bonus' but still has its own flaws, but thats for later. So in some way, i'm trying to rewrite cat using bash and other commands. But sadly it fails on...

9. UNIX for Beginners Questions & Answers

Performance issue to read line by line

Hi All- we have performance issue in unix to read line by line. I am looking at processing all the records. description: Our script will read data from a flat file, it will pickup first four character and based on the value it will set up variables accordingly and appended the final output to...

10. Shell Programming and Scripting

Performance issue - to read line by line

All- We have a performance issue in reading a file line by line. Please find attached scripts for the same. Currently it is taking some 45 min to parse "512444" lines. Could you please have a look at it and provide any suggestions to improve the performance. Thanks, Balu ...

LEARN ABOUT REDHAT

qmail-getpw

qmail-getpw(8)                                                System Manager's Manual                                               qmail-getpw(8)

NAME

       qmail-getpw - give addresses to users

SYNOPSIS

       qmail-getpw local

DESCRIPTION

       In  qmail,  each  user controls a vast array of local addresses.  qmail-getpw finds the user that controls a particular address, local.  It
       prints six pieces of information, each terminated by NUL: user; uid; gid; homedir; dash; and ext.  The user's account  name  is  user;  the
       user's  uid  and  gid  in  decimal  are  uid  and gid; the user's home directory is homedir; and messages to local will be handled by home-
       dir/.qmaildashext.

       In case of trouble, qmail-getpw exits nonzero without printing anything.

       WARNING: The operating system's getpwnam function, which is at the heart of qmail-getpw, is inherently unreliable: it fails to  distinguish
       between  temporary  errors and nonexistent users.  Future versions of getpwnam should return ETXTBSY to indicate temporary errors and ESRCH
       to indicate nonexistent users.

RULES

       qmail-getpw considers an account in /etc/passwd to be a user if (1) the account has a nonzero uid, (2) the account's home directory  exists
       (and  is visible to qmail-getpw), and (3) the account owns its home directory.  qmail-getpw ignores account names containing uppercase let-
       ters.  qmail-getpw also assumes that all account names are shorter than 32 characters.

       qmail-getpw gives each user control over the basic user address and all addresses of the form user-anything.  When local is user, dash  and
       ext  are  both  empty.  When local is user-anything, dash is a hyphen and ext is anything.  user may appear in any combination of uppercase
       and lowercase letters at the front of local.

       A catch-all user, alias, controls all other addresses.  In this case ext is local and dash is a hyphen.

       You can override all of qmail-getpw's decisions with the qmail-users mechanism, which is reliable, highly  configurable,  and  much  faster
       than qmail-getpw.

SEE ALSO

       qmail-users(5), qmail-lspawn(8)

                                                                                                                                    qmail-getpw(8)