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Full Discussion: Reading a file with while into variable and using in another process
Top Forums Shell Programming and Scripting Reading a file with while into variable and using in another process Post 302369195 by cfajohnson on Friday 6th of November 2009 09:36:15 PM
Old 11-06-2009
Quote:
Originally Posted by redhead
how about somethign like this:
Code:
#!/bin/ksh
for line in `/usr/bin/cat /u1/cutshellb.txt`; do
 /u1/sendreportmail.sh "$line" 1>sendmail.log 2>&1
done

and in the script have:
Code:
cd /u1/mail/bin/
./mailsend -i -vvvv   -tany_person@mailaddress.uk -s "Mail report " 
 -a/u1/$1.pdf "  "

But why not simply incorporate the mailsend command into the orriginal script ?
like:
Code:
#!/bin/ksh
for line in `/usr/bin/cat /u1/cutshellb.txt`; do


Code:
bash: /usr/bin/cat: No such file or directory

More accurate would be:

Code:
for word in `/usr/bin/cat /u1/cutshellb.txt`; do

You are reading a word, not a line, into the variable.


The correct way to read a file line by line is:

Code:
while IFS= read -r line
do
  : do whatever
done < /u1/cutshellb.txt

In bash4, you can read a file into an array with mapfile:

Code:
mapfile -t array < /u1/cutshellb.txt

 

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LEARN ABOUT SUSE

apport-cli

apport-cli(1)						      General Commands Manual						     apport-cli(1)

NAME

       apport-cli - Command line client for reporting problems

SYNOPSIS

       apport-cli

       apport-cli -c report

       apport-cli -f -p package

       apport-cli -f -P pid

DESCRIPTION

       apport automatically collects data from crashed processes and compiles a problem report in /var/crash/. This is a command line frontend for
       reporting those crashes to the developers. It can also be used to report bugs about packages or running processes.

       For desktop systems with a graphical user interface, you should consider installing the GTK or Qt user interface (apport-gtk or apport-qt).
       apport-cli is mainly intended to be used on servers.

       When  called  without  any  options,  it processes the pending crash reports and offers to report them one by one. You can also display the
       entire report to see what is sent to the software developers.

OPTIONS

       -c report, --crash-file=report
	      Instead of walking over the new crash reports in /var/crash/, report a particular report in an arbitrary	file  location.   This	is
	      useful for copying a crash report to a machine with internet connection and reporting it from there.

       -f, --file-bug
	      Report a (non-crash) problem. Requires specifying --package or --pid.  This will automatically attach information about your operat-
	      ing sytem and the package version etc. to the bug report, so that the developers have some important context.

       -p package, --package=package
	      When being used in --file-bug mode, specify the package to report the problem against.

       -P pid, --pid=pid
	      When being used in --file-bug mode, specify the PID (process ID) of a running program to report the problem  against.  This  can	be
	      determined with e. g.  ps -ux.

ENVIRONMENT

       APPORT_IGNORE_OBSOLETE_PACKAGES
	      Apport  refuses  to  create  bug	reports if the package or any dependency is not current. If this environment variable is set, this
	      check is waived. Experts who will thoroughly check the situation before filing a bug report can define this in  their  ~/.bashrc	or
	      temporarily when calling the apport frontend (-cli, -gtk, or -qt).

AUTHOR

       apport and the accompanying tools are developed by Martin Pitt <martin.pitt@ubuntu.com>.

Martin Pitt							  August 01, 2007						     apport-cli(1)
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