Extract a number from a line in a file and sed in another copied file
Dear all,
I am trying to extract a number from a line in one file (task 1), duplicate another file (task 2) and replace all instances of the strings 300, in duplicated with the extracted number (task 3). Here is what I have tried so far:
temperatures file:
nvt.mdp file
The result is that I get copies of nvt_1.mdp to nvt_3.mdp correctly, however, I obtain only one copy from task 3 and it is not even named correctly ie. 1_nvt.mdp is only .mdp.
In addition, since the sed command extracts a string from the line, it also extracts with it the line-break "character", changing the formatting of .mdp file.
I realized that if I were to convert the extracted number into an integer it should in theory work to prevent the format change of task 3 files. Though typset -i before Task 1 command gives the error:
")syntax error: invalid arithmetic operator (error token is "
If anyone could help with the proper implementation of task 3 such that formatting of $k_nvt.mdp is not changed and the proper number of copies are generated, I would be very grateful.
Cordially,
Ali
Last edited by Franklin52; 12-12-2010 at 08:46 AM..
Reason: Please use code tags
Hi,
I have to update last line of a text file with the number of lines in that file. This last line will have text such as 0.0000 and I should replace this with number lines. If lines are 20 then it should be replaced with 00020. Any sed or awk cmd help would be appreciated (3 Replies)
I have a shell script and want to assign a value to a variable. The value is the line exctrated from a file using the line number. The line number it is not fix, and could change any time.
I have tried sed, awk, head .. See my script
# Get randome line number from the file
#selectedline = `awk... (1 Reply)
Hello,
I am having trouble extracting a specific line from a file when the line number is known. My first attempt involved grep -n 'hi' (the word 'hi will always be there) to get the line number before the line that I actually want (line 4).
Extra Notes:
-I am working in a bash script.
-The... (7 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 Have file1 with below lines :
#HostNameSelection=0 :NotUsed
#HostNameSelection=1 :Automatic
#HostNameSelection=3 :NotForced
I have file2 which has similar lines but with different values
I want to copy the changes from file1 to file2 ,line by line only if line begins with '#'.
for... (7 Replies)
Hi,
I search all forum, but I can not find solutions of my problem :(
I have multiple files (5000 files), inside there is this data :
FILE 1:
1195.921 -898.995 0.750312E-02-0.497526E-02 0.195382E-05 0.609417E-05
-2021.287 1305.479-0.819754E-02 0.107572E-01 0.313018E-05 0.885066E-05
... (15 Replies)
I have 1 file that has elements as follows. Also the CVR(10) and the word "SAUCE" only appear once in the file so maybe a grep command would work?
file1
CVR( 9) = 0.385E+05, ! VEHICLE
CVR(10) = 0.246E+05, ! SAUCE
CVR(11) = 0.162E+03, ! VEHICLE
I need to extract the... (6 Replies)
Sed command to replace a line in a file using line number from the output of a pipe.
Is it possible to replace a whole line piped from someother command into a file at paritcular line...
here is some basic execution flow..
the line number is 412
lineNo=412
Now i have a line... (1 Reply)
Ok .. This is driving me nuts. I suppose I need another set of eyes.
Example Data
interface Vlan1
description xxxxxxxxxxxx
ip address 192.168.1.1 255.255.255.252
no ip redirects
no ip proxy-arp
ip flow ingress
ip pim sparse-mode
load-interval 30
!
interface Vlan2
... (5 Replies)
Discussion started by: popeye
5 Replies
LEARN ABOUT DEBIAN
gearman_task_data
GEARMAN_TASK_DATA(3) Gearmand GEARMAN_TASK_DATA(3)NAME
gearman_task_data - Gearmand Documentation, http://gearman.info/
SYNOPSIS
#include <libgearman/gearman.h>
gearman_task_st
void gearman_task_free(gearman_task_st *task)
void *gearman_task_context(const gearman_task_st *task)
void gearman_task_set_context(gearman_task_st *task, void *context)
const char *gearman_task_function_name(const gearman_task_st *task)
const char *gearman_task_unique(const gearman_task_st *task)
const char *gearman_task_job_handle(const gearman_task_st *task)
bool gearman_task_is_known(const gearman_task_st *task)
bool gearman_task_is_running(const gearman_task_st *task)
uint32_t gearman_task_numerator(const gearman_task_st *task)
uint32_t gearman_task_denominator(const gearman_task_st *task)
void gearman_task_give_workload(gearman_task_st *task, const void *workload, size_t workload_size)
size_t gearman_task_send_workload(gearman_task_st *task, const void *workload, size_t workload_size, gearman_return_t *ret_ptr)
const void *gearman_task_data(const gearman_task_st *task)
size_t gearman_task_data_size(const gearman_task_st *task)
void *gearman_task_take_data(gearman_task_st *task, size_t *data_size)
size_t gearman_task_recv_data(gearman_task_st *task, void *data, size_t data_size, gearman_return_t *ret_ptr)
const char *gearman_task_error(const gearman_task_st *task)
New in version 0.21.
gearman_return_t gearman_task_return(const gearman_task_st *task)
New in version 0.21.
Link with -lgearman
DESCRIPTION
A gearman_task_st represents a task. Work that is sent by a client to a gearman server is seen as a task (a worker recieves a task in the
form of a job.
Tasks, i.e. gearman_task_st are created by calling either gearman_execute(), gearman_client_add_task(), or gearman_client_add_task_back-
ground().
gearman_client_add_task_status() can also create gearman_task_st, these tasks will be used to monitor a previously created gearman_task_st.
gearman_task_free() is used to free a task. This only needs to be done if a task was created with a preallocated structure or if you want
to clean up the memory of a specific task.
gearman_task_set_context() sets the given context of the gearman_task_st. The context can be used to pass information to a gearman_task_st.
gearman_task_context() returns the context that was used in the creation of the gearman_task_st (or that was set with
gearman_task_set_context().
gearman_task_data() returns the current data that has been returned to the task. gearman_task_data_size() will give you the size of the
value. gearman_task_take_data() is the same as gearman_task_data() but the value that is returned must be freed by the client (free(3)).
gearman_task_recv_data() can be used with pre-allocated buffers.
gearman_task_is_known(), gearman_task_is_running(), gearman_task_numerator(), and gearman_task_denominator(), return values related to the
last status update that was made to the gearman_task_st. They do not cause the gearman_task_st to update itself.
gearman_task_error() return the last error message that the gearman_task_st encountered. gearman_task_return() return the last gear-
man_return_t stored. A value of GEARMAN_UNKNOWN_STATE means that the task has not been submitted to server yet, or that no function was
available if the job has been submitted.
RETURN VALUE
Various. Values that are returned by gearman_task_take_data() must have free(3) called on them.
HOME
To find out more information please check: http://gearman.info/
SEE ALSO gearmand(8)libgearman(3)AUTHOR
Data Differential http://www.datadifferential.com/
COPYRIGHT
2012, Data Differential, http://www.datadifferential.com/
0.33 May 04, 2012 GEARMAN_TASK_DATA(3)