Hello,
in my shell script i have some multi-line text in a variable $TEMP - f.e.
blablahblah
blah blah
bla TARGET hgloglo
And i need to replace TARGET with text from another variable ($REPLACE), which is containing some text with nasty characters (\n, ", :, etc.) And stuff the altered text... (2 Replies)
Hi Can someone help me with this one?
I have string..
(PROC_PROC_ID == 12183) <--PID is dynamic
and i want to replace the PID number with whatever PID from
/opt/hpws/apache32_2/logs/httpd.pid file.
i'm having problem since the PID on the string is dynamic. It may be 2-5 digits or more.
... (5 Replies)
I need a sed line that will take STDM111 and change it to STDM161
the STDM will always be constant but the 3 numbers after will be random, I just need it to always replace the middle number with 6 regardless of what the numbers are. (8 Replies)
If I have a file something like as shown below,
ARM*187878*hjhj
BAG*88778*jjjj
COD*7777*kkkk
BAG*87878*kjjhjk
DEF*65656*89989*khjkk
I need the line numbers to be added with a colon when it matches the string "BAG". Here in my case, I need something like
ARM*187878*hjhj... (4 Replies)
Hi all,
I need to run a number of scripts which have a certain phrase on them so I have identified these by;
grep -l 100 *script | sort -u
Normally I could just run something along the lines of;
for i in `grep -l 100 *script | sort -u`; do ./${i}; done
However before I run each of... (0 Replies)
Hi experts,
My csv file looks like this
U;cake;michael;temp;;;;
U;bread;john;temp;;;;
U;cocktails;sarah;temp;;;;
I'd like to change the value fo 2nd column to cf+random number , which will look maybe something like this
U;cf20187;michael;temp;;;;
U;cf8926;john;temp;;;;... (7 Replies)
Here is my problem:-
I have a file with pipe separated values.
CR|20121021|079|ABC|N|DLS|00038|DLS|04750|1330597704|634234|634|0
CR|20121021|079|ABC|N|DLS|00038|DLS|05118|2071690102|354|351|3
CR|20121021|079|ABC|N|DLS|00038|DLS|05140|960051505|1088|1088|0... (4 Replies)
Hi
I have below script which is used to grep specific errors and if error string matches send an email alert.
Script is working fine , however , i wish to print next 10 lines of the string match to get the details of error in the email alert
Current code:-
#!/bin/bash
tail -Fn0 --retry... (2 Replies)
I have a file comp.pkglist which mention package version and release . In 'version change' and 'release change' line there are two versions 'old' and 'new' Version Change: --> Release Change: -->
cat comp.pkglist
Package list: nss-util-devel-3.28.4-1.el6_9.x86_64
Version Change: 3.28.4 -->... (1 Reply)
I have a list of value , and need to replace that in my file.
Eg:
File1
tcname:fail
tcname: Pass
tcname:skipped
File2:
01,02,03
Output:
File 1
01:fail
02: Pass
03:Skipped (8 Replies)
Discussion started by: DevAakash
8 Replies
LEARN ABOUT PLAN9
lock
LOCK(2) System Calls Manual LOCK(2)NAME
lockinit, lock, canlock, unlock - shared memory spin lock
SYNOPSIS
#include <lock.h>
void lockinit(void);
void lock(Lock *lk);
int canlock(Lock *lk);
void unlock(Lock *lk);
/* Alef only */
adt Lock
{
void lock(*Lock);
void unlock(*Lock);
int canlock(*Lock);
};
adt QLock
{
void lock(*Lock);
void unlock(*Lock);
int canlock(*Lock);
};
adt RWlock
{
void Rlock(*RWlock);
void Runlock(*RWlock);
void Wlock(*RWlock);
void Wunlock(*RWlock);
};
adt Ref
{
int inc(*Ref);
int dec(*Ref);
int ref(*Ref);
};
DESCRIPTION
These routines are used by processes sharing memory to synchronize using spin locks. Lockinit must be called before the first use of the
other routines. Lock blocks until the lock has been obtained. Canlock is non-blocking. It tries to obtain a lock and returns a non-zero
value if it was successful, 0 otherwise. Unlock releases a lock.
Alef
Alef locks have similar functionality, but no special initialization is required. The ADT Lock has functions lock, unlock, and canlock,
just like locks in C. QLocks have the same interface but are not spin locks; instead if the lock is taken QLock.lock will suspend execu-
tion of the calling task until it is released.
Although Locks are the more primitive lock, their use is discouraged and even erroneous for most purposes. For example, Locks cannot syn-
chronize between tasks in the same proc. Use QLocks instead.
RWlocks manage access to a data structure that has distinct readers and writers. RWlock.Rlock grants read access; RWlock.Runlock releases
it. RWlock.Wlock grants write access; RWlock.Wunlock releases it. There may be any number of simultaneous readers, but only one writer.
Moreover, if write access is granted no one may have read access until write access is released.
Refs manage reference counters. Ref.inc increments the counter and returns the old value; Ref.dec decrements the counter and returns the
new value. Ref.ref returns the current value.
SOURCE
/sys/src/liblock
SEE ALSO
rfork in fork(2)LOCK(2)