02-05-2008
Is this some kind of trick question?
Check for a condition
If the condition is true
Then list files in the directory
Perhaps the vagueness, or "conceptualness", is confusing people
Provide actual script code
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I have a command called
cd $HDRROOT/release/tools/cfg
My query is what it means?
tHat is.... $HDRROOT part is not clear.
If I put this command it says path not found....
I doubt that $HDRROOT is trying to mean smething I am not clear of.
PL help......... (4 Replies)
Discussion started by: rraajjiibb
4 Replies
2. UNIX for Dummies Questions & Answers
I found a file in my base folder width the name replace.sh and width the text string.
sed -i "s/$1/$2/g" `grep -ir $1 ./*|grep -v '.svn'|cut -d: -f1`
Wat does it mean and what does it do? (1 Reply)
Discussion started by: samarn
1 Replies
3. Shell Programming and Scripting
hey, what's $$varname in a script? I used to see $varname only. search on google didn't help. thanks. (4 Replies)
Discussion started by: patiobarbecue
4 Replies
4. UNIX for Dummies Questions & Answers
Can you please tell me what this means?
use grep to find from the file myfile.txt all lines containing the sequence tt but not more 2 ts?
I have no idea. (2 Replies)
Discussion started by: rushhour
2 Replies
5. UNIX for Dummies Questions & Answers
I can not find out what the %U means in the following command:
ooffice -calc %U (2 Replies)
Discussion started by: borobudur
2 Replies
6. Shell Programming and Scripting
I have a script like
select * from table
!!
what those exclamation marks mean (4 Replies)
Discussion started by: vasuarjula
4 Replies
7. Shell Programming and Scripting
Hi,
I have seen in some ksh script, that we are executing shell scripts inside other shell script as
. variable.sh
What is . here? Their is space between . and variabloe. And why we are not executing it like ./variable.sh? I know that . signifies current directory , but what its... (2 Replies)
Discussion started by: jatanig
2 Replies
8. Programming
#define abc '\xE8' (7 Replies)
Discussion started by: kamlesh33
7 Replies
9. UNIX for Beginners Questions & Answers
HI
what does the $(NF) means.
here i want to understand the working.
what i know is that in awk NF argument will tell number of column in a file
i have below file
alpha
a
beta
b
if i use command cat kv | paste - - | awk '{print $1," "$2 "------>"$(NF)}'
i get the o/p as
alpha ... (3 Replies)
Discussion started by: scriptor
3 Replies
LEARN ABOUT CENTOS
wait_event_interruptible_exclusive_locked_irq
WAIT_EVENT_INTERRUPT(9) Driver Basics WAIT_EVENT_INTERRUPT(9)
NAME
wait_event_interruptible_exclusive_locked_irq - sleep until a condition gets true
SYNOPSIS
wait_event_interruptible_exclusive_locked_irq(wq, condition);
ARGUMENTS
wq
the waitqueue to wait on
condition
a C expression for the event to wait for
DESCRIPTION
The process is put to sleep (TASK_INTERRUPTIBLE) until the condition evaluates to true or a signal is received. The condition is checked
each time the waitqueue wq is woken up.
It must be called with wq.lock being held. This spinlock is unlocked while sleeping but condition testing is done while lock is held and
when this macro exits the lock is held.
The lock is locked/unlocked using spin_lock_irq/spin_unlock_irq functions which must match the way they are locked/unlocked outside of this
macro.
The process is put on the wait queue with an WQ_FLAG_EXCLUSIVE flag set thus when other process waits process on the list if this process
is awaken further processes are not considered.
wake_up_locked has to be called after changing any variable that could change the result of the wait condition.
The function will return -ERESTARTSYS if it was interrupted by a signal and 0 if condition evaluated to true.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 WAIT_EVENT_INTERRUPT(9)