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)
Hi, I'm a bit of sed n00b here.
My issue is as follows:
I'm trying to pass a variable to sed so that all instances of this variable (in a text file) will be replaced with nothing. However, the value of this variable will always be a folder location e.g. "C:\Program Files\Folder1"
I... (5 Replies)
Hi
I want to extract certain text between two line numbers like
23234234324 and
54446655567567
How do I do this with a simple sed or awk command?
Thank you.
---------- Post updated at 06:16 PM ---------- Previous update was at 05:55 PM ----------
found it:
sed -n '#1,#2p'... (1 Reply)
I am attempting to insert multiple lines of text into a specific place in a text file based on the lines above or below it.
For example, Here is a portion of a zone file.
IN NS ns1.domain.tld.
IN NS ns2.domain.tld.
IN ... (2 Replies)
Hi All,
I need read the file and out put format as below using ksh, I wrote below script its keep on repeating first line in the file.
may i know the best way to get the below out put while incrementing line in the file.
cat b.txt |awk '{print $0}' |while read line
do
aa=`cat $line |head -1... (7 Replies)
this is Korn shell unix.
The scenario is I have a pipe delimited text file which needs to be customized. say for example,I have a pipe delimited text file with 15 columns(| delimited) and 200 rows. currently the 11th and 12th column has null values for all the records(there are other null columns... (4 Replies)
Hello All,
this is my first post so I don't know if I am doing this right.
I would like to append entries from a series of strings (contained in a text file) consecutively at the end of specifically labeled lines in another file.
As an example:
- the file that contains the values to be... (3 Replies)
Hi,
I'm trying to search for some number and from that line, i need to delete the 5th line exactly.
Eg:
Consider below as text file data:
10000
a
b
c
d
e
.
.
.
10000
w
q
t (8 Replies)
In the below file I am trying to grep or similar, all lines where only AF= is less than 0.4.. Thank you :).
grep
grep "AF=" ,+ .4 file
file
12 112036782 . T C 34.0248 PASS ... (3 Replies)
Discussion started by: cmccabe
3 Replies
LEARN ABOUT CENTOS
error::pass1
ERROR::PASS1(7stap)ERROR::PASS1(7stap)NAME
error::pass1 - systemtap pass-1 errors
DESCRIPTION
Errors that occur during pass 1 (parsing) usually mean a basic syntax error of some sort occurred in the systemtap script. There are sev-
eral classes of problems possible:
plain syntax error
The systemtap script parser detects a large variety of errors, such as missing operands, bad punctuation. It tries to list what
kinds of tokens it was expecting to see, and will show the region of the source code with the problem. Please review the stap(1)
man page and/or the tutorial, to correct the script's syntax.
grammar ambiguities
There is at least one known ambiguity in the systemtap grammar. It relates to the optionality of ; (semicolon) separators between
statements, and the ++ and -- increment/decrement operators. If the parser indicates an error, consider adding some explicit ; sep-
arators between nearby statements and try again.
missing command line arguments
A systemtap script that uses the $N and @N constructs for substituting in command-line options may fail if not enough options were
given on the stap command line.
compatibility changes
Some versions of systemtap have changed the language incompatibly, for example by adding the try/catch keywords for exception han-
dling. In such cases, rerun systemtap with the --compatibility=VERSION option, substituting the last systemtap version where your
script was known to work. You may also check the release-history NEWS file for compatibility changes.
GATHERING MORE INFORMATION
Increasing the verbosity of pass-1 with an option such as --vp 1 can help pinpoint the problem.
SEE ALSO stap(1),
error::reporting(7stap)ERROR::PASS1(7stap)
01-21-2019
