Confusion about IFS Variable

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1. Shell Programming and Scripting

Odd Behaviour for Set and IFS variable

Ok, so I'm playing around with delimters and reading files. and I came across this behaviour that I thought was a bit odd, regarding how the set command takes values... If I run this: IFS=$'-' #Assigns the - as the default delimiter for bash set I-love-my-gf-a-lot #uses set to put a bunch of...

2. Shell Programming and Scripting

Not able to understand IFS

Hi , i am in my initial learning phase of unix. i was going thru the function part. below is the example which was there but i am not able to understand logic and the use of IFS(internal field separator) lspath() { OLDIFS="$IFS" IFS=: for DIR in $PATH ; do echo $DIR ; done IFS="$OLDIFS"...

3. Shell Programming and Scripting

While loop and IFS?

Hi, while ; do echo "Please enter " read enter yyyy=${enter:0:4} mm=${enter:5:2} dd=${enter:8:2} result=`validateDate $yyyy $mm $dd` When does the loop keeping repeating till?? till 1 is equal to 1? what does this mean "${enter:0:4}" .The 0 and 4 part?? ...

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little confusion about variable initialization.

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5. Shell Programming and Scripting

regarding IFS=

hi i am a learner can some explain "export IFS=$(echo "\n\t\a")" i am not able to understand the functionality please help thanks Satya

6. Shell Programming and Scripting

resetting IFS variable

Hi, I have modified the IFS variable in the K shell program and with in the program i want to reset to the default one. How do i reset the same. e.g in the begining of the program IFS is default in the middle i changed it to IFS="|" and again i want the default value for the IFS. ...

7. UNIX for Dummies Questions & Answers

Help on IFS command!

Hi! I am working in korn shell. I want to reset the dimiliter for the set command to "|" but instead of a command prompt return I am getting something as below After issuing the command I am getting this....as if the shell is expecting something else. Can anybody suggest what's the problem. ...

8. UNIX for Dummies Questions & Answers

IFS variable

How can I set the value for IFS variable

9. UNIX for Dummies Questions & Answers

the IFS variable

Hi all, Ok os heres my situation. I have created a database style program that stores a persons info (name,address,phone number etc.) in a file ("database"). after i read in all the values above, i assign them to a line variable: line="$name^$address^$phonenum" >> phonebuk as you can see...

10. Shell Programming and Scripting

IFS changing the variable value

Hi, I have a while read loop that reads files in a directory and process. The files have spaces in between, so I have the IFS=\n to to read the whole line as one file name. The read works fine but I have a problem with another variable that I set in the beginning of the script. The variable...

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ql-set-cmd-timeout

ql-set-cmd-timeout(8)					       System Administration					     ql-set-cmd-timeout(8)

NAME

       ql-set-cmd-timeout - set the timeout on the devices connected to the QLogic FC HBA.

SYNOPSIS

       ql-set-cmd-timeout [OPTIONS]

DESCRIPTION

       QLogic Linux Set Device Timeout Utility

       This  utility allows you to set the timeout on the devices connected to the QLogic FC HBA.  This timeout value applies to the commands sent
       to the device. This can help when target devices take longer to execute a command, for example under heavy I/O. Setting	a  longer  timeout
       reduces the chance of the Linux SCSI mid-layer driver aborting the tasks after a timeout.

	      [DEFAULT]

	      Display timeout of devices connected to all HOSTs

	      [HOST]

	      Display timeout of devices connected to HOST

	      [HOST] [TARGET]

	      Display timeout of devices connected to a TARGET on HOST

	      [HOST] [TARGET] [TIMEOUT]

	      To set timeout on devices connected to a TARGET on HOST

       -h,  --help, ?
	      Prints this help message

       -i,  --interactive
	      Use this option to use the menu driven program

SEE ALSO

       ql-dynamic-tgt-lun-disc(8), ql-lun-state-online(8), ql-hba-snapshot(8)

Matthias Schmitz <;matthias@sigxcpu.org> 			    August 2008 					     ql-set-cmd-timeout(8)

Shell Programming and Scripting