Hi, experts,
I would like to create a function that can calculate the total number of lines in a saved text file and delete specific lines in that particular file (I only want the last few lines). Hav anybody have the experience and giv me a hand in this? (9 Replies)
hello all
I have bunch of files containing lines of text that surrounding by <# .......#> tags
I like to delete this lines from the text files whiteout open the files , can it be done with sed ?
or other unix tool (perl mybe )? (2 Replies)
Hello,
Hello Firends,
I have file like below. I want to remove selected blocks say abc,pqr,lst. how can i remove those blocks from file.
zone abc {
blah
blah
blah }
zone xyz {
blah
blah
blah }
zone pqr {
blah
blah
blah } (4 Replies)
Hi everybody!
I need to delete several vertical lines in a huge text file.
It should work like the example below. Delete the vertical lines 2 and 8.
123456789
masldfjla
afsajfwel
sajfljsaf
safsarfrl
sajfeljwq
1345679
msldfja
asajfwl
sjfljsf
sfsarfl
sjfeljq
Is there a... (11 Replies)
Hello,
I have a group of text files with many lines in each file.
I need to delete all the lines in each and only leave 2 lines in each file. (3 Replies)
hi guys,
I have very large txt files (200GB) and just want to to delete the first two lines (headers). So far I used
sed -i '1,2d' infile.txtbut this command always takes extremely long as it writes all again. Is there a better way to do it (ie just to delete the lines without writing all... (2 Replies)
hey guys,
I tried searching but most 'search and replace' questions are related to one liners.
Say I have a file to be replaced that has the following:
$ cat testing.txt
TESTING
AAA
BBB
CCC
DDD
EEE
FFF
GGG
HHH
ENDTESTING
This is the input file: (3 Replies)
Hello,
I'm trying to figure out how to use sed or awk to delete single lines in a file. By single, I mean lines that are not touching any other lines (just one line with white space above and below).
Example:
one
two
three
four
five
six
seven
eight
I want it to look like: (6 Replies)
I'm trying to remove a specific number of lines, above and below a specific line of text, highlighted in red:
<STMTTRN>
<TRNTYPE>CREDIT
<DTPOSTED>20151205000001
<TRNAMT>10
<FITID>667800001
<CHECKNUM>667800001
<MEMO>BALANCE
</STMTTRN>
<STMTTRN>
<TRNTYPE>DEBIT
<DTPOSTED>20151207000001... (8 Replies)
Discussion started by: bomsom
8 Replies
LEARN ABOUT HPUX
flockfile
flockfile(3S)flockfile(3S)NAME
flockfile(), ftrylockfile(), funlockfile() - explicit locking of streams within a multithread application
SYNOPSIS DESCRIPTION
The and functions provide for explicit application-level locking of streams. These functions can be used by a thread to delineate a
sequence of I/O statements that are to be executed as a unit.
The function is used by a thread to acquire ownership of a object.
The function is used by a thread to acquire ownership of a object if the object is available; is a non-blocking version of
The function is used to relinquish the ownership granted to the thread. The behavior is undefined if a thread other than the current owner
calls the function.
Logically, there is a count associated with each stream. This count is implicitly initialized to zero when the stream is created. The
stream is unlocked when the count is zero. When the count is positive, a single thread owns the stream. When the function is called, if
the count is zero or if the count is positive and the caller owns the stream, the count is incremented. Otherwise, the calling thread is
suspended, waiting for the count to return to zero. Each call to decrements the count. This allows matching calls to (or successful calls
to and to be nested.
All POSIX.1 and C standard functions that reference objects behave as if they use and internally to obtain ownership of these objects.
RETURN VALUE
None for and The function returns zero for success and nonzero to indicate that the lock cannot be acquired.
flockfile(3S)