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Full Discussion: While loop breaking when using "ssh" command inside
Top Forums Shell Programming and Scripting While loop breaking when using "ssh" command inside Post 302894971 by Anupam_Halder on Friday 28th of March 2014 06:58:35 AM
Old 03-28-2014
While loop breaking when using "ssh" command inside
Hi ,

I am trying to read a list of hosts from a config file and trying to get file list from that host. For this I have used one while loop.
Code:
cat "$ARCHIVE_CFG_FILE" |  sed '/^$/d' | sed '/^#/d' | while read ARCHIVE_CFG
do 
    SOURCE_SERVER_NAME=`echo "$ARCHIVE_CFG" | awk -F '|' '{ print $1 }'`
    SOURCE_FOLDER_NAME=`echo "$ARCHIVE_CFG" | awk -F '|' '{ print $2 }'`
    LOAD_FILE_NAME=`echo "$ARCHIVE_CFG" | awk -F '|' '{ print $3 }'`
    ARCHIVE_FOLDER=`echo "$ARCHIVE_CFG" | awk -F '|' '{ print $4 }'` 
    ARCHIVE_DELAY=`echo "$ARCHIVE_CFG" | awk -F '|' '{ print $5 }'`
    TEMP_SFTP_FILE="census_.$$.sftp"

    step_message="checking config variables"
    if [ "$SOURCE_SERVER_NAME" = "" ] || [ "$SOURCE_FOLDER_NAME" = "" ] || [ "$LOAD_FILE_NAME" = "" ] || [ "$ARCHIVE_FOLDER" = "" ] || [ "$ARCHIVE_DELAY" = "" ] || [ "$TEMP_SFTP_FILE" = "" ]
    then 
        log 3 "$step_message"
    else
        log 5 "$step_message"
    fi

    log 5 "================================================="
    log 5 "SOURCE_SERVER_NAME\t:\t$SOURCE_SERVER_NAME"
    log 5 "SOURCE_FOLDER_NAME\t:\t$SOURCE_FOLDER_NAME"
    log 5 "LOAD_FILE_NAME\t\t:\t$LOAD_FILE_NAME"
    log 5 "ARCHIVE_FOLDER\t\t:\t$ARCHIVE_FOLDER"
    log 5 "ARCHIVE_DELAY\t\t\t:\t$ARCHIVE_DELAY days"
    log 5 "TEMP_SFTP_FILE\t\t:\t$TEMP_SFTP_FILE"
    log 5 "================================================="
    
        #Getting file archive list from remote server
    step_message="Getting file archive list from remote server"
    FILELIST=`ssh $SOURCE_SERVER_NAME find $SOURCE_FOLDER_NAME -type f -mtime +$ARCHIVE_DELAY | grep "$SOURCE_FOLDER_NAME/$LOAD_FILE_NAME"`
    echo $?
    
done

But when I am using the ssh command inside this while loop the loop is breaking and I am not getting any more file list of next host.

Can anyone please suggest what is the issue and how to overcome this?

ARCHIVE_CFG_FILE = config file containing multiple host details
log is a function for logging.
 

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LEARN ABOUT DEBIAN

seivots-summary

SEIVOTS-SUMMARY(1)					      General Commands Manual						SEIVOTS-SUMMARY(1)

NAME

       seivots-summary - summarize seivot output files

SYNOPSIS

       seivots-summary	[--config=FILE]  [--dump-config]  [--dump-memory-profile=METHOD] [--dump-setting-names] [--generate-manpage=TEMPLATE] [-h]
       [--help] [--list-config-files] [--log=FILE] [--log-keep=N] [--log-level=LEVEL]  [--log-max=SIZE]  [--log-mode=MODE]  [--no-default-configs]
       [--output=FILE] [--version] [FILE]...

DESCRIPTION

       seivots-summary	reads some benchmark result files created by summain(1), and produces summaries of them in tabular form, making it easy to
       compare results from different benchmark runs.

OPTIONS

       --config=FILE
	      add FILE to config files

       --dump-config
	      write out the entire current configuration

       --dump-memory-profile=METHOD
	      make memory profiling dumps using METHOD, which is one of: none, simple, meliae, or heapy (default: simple)

       --dump-setting-names
	      write out all names of settings and quit

       --generate-manpage=TEMPLATE
	      fill in manual page TEMPLATE

       -h, --help
	      show this help message and exit

       --list-config-files
	      list all possible config files

       --log=FILE
	      write log entries to FILE (default is to not write log files at all); use "syslog" to log to system log, or "none" to  disable  log-
	      ging

       --log-keep=N
	      keep last N logs (10)

       --log-level=LEVEL
	      log at LEVEL, one of debug, info, warning, error, critical, fatal (default: debug)

       --log-max=SIZE
	      rotate logs larger than SIZE, zero for never (default: 0)

       --log-mode=MODE
	      set permissions of new log files to MODE (octal; default 0600)

       --no-default-configs
	      clear list of configuration files to read

       --output=FILE
	      write output to FILE, instead of standard output

       --version
	      show program's version number and exit

EXAMPLE

       To summarize all benchmark files:

	      seivots-summary $HOME/obnam/benchmarks/*/*.seivot | less -S

SEE ALSO

       seivot(1), obnam(1).

																SEIVOTS-SUMMARY(1)
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