02-09-2008
I know Perl has ways to re-write the file in-place, but I'm not too familiar with swapping fields.
Probably something like 's/(.*) (.*)/\2 \1/g'
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I want to find the top N entries for a certain field based on the values of another field.
For example if N=3, we want the 3 best values for each entry:
Entry1 ||| 100
Entry1 ||| 95
Entry1 ||| 30
Entry1 ||| 80
Entry1 ||| 50
Entry2 ||| 40
Entry2 ||| 20
Entry2 ||| 10
Entry2 ||| 50... (1 Reply)
Discussion started by: FrancoisCN
1 Replies
2. Shell Programming and Scripting
Hi All,
I have two files
file1:
abc,def,ghi,5,jkl,mno
pqr,stu,ghi,10,vwx,xyz
cba,ust,ihg,4,cdu,oqw
file2:
ravi,def,kishore
ramu,ust,krishna
joseph,stu,mike
I need two output file as follows
If field3 in file1 is same as field3 in the next line then the field4 should add... (1 Reply)
Discussion started by: yerruhari
1 Replies
3. Shell Programming and Scripting
Hi All,
I have a file which is having 3 columns as (string string integer)
a b 1
x y 2
p k 5
y y 4
.....
.....
Question:
I want get the unique value of column 2 in a sorted way(on column 2) and the sum of the 3rd column of the corresponding rows. e.g the above file should return the... (6 Replies)
Discussion started by: amigarus
6 Replies
4. Shell Programming and Scripting
hi
i have file as below , i want to add duplicate records like bell_bb to one record with valuve as 15 ( addition of both )
any oneline awk script to achive this ?
header 0
CAMPAIGN_NAME 1
Bell_BB 14
Bell_MONTHLY 803
SOLO_UNBEATABLE 644
Bell_BB 1
Bell_MONTHLY 25
SOLO_UNBEATABLE... (4 Replies)
Discussion started by: raghavendra.cse
4 Replies
5. Shell Programming and Scripting
Hello everybody,
I'm trying to count the number of consecutive lines in a text file which have two distinctive column field values. These lines may appear in several line blocks within the file, but I only want a single block to be counted.
This was my first approach to tackle the problem (I'm... (6 Replies)
Discussion started by: origamisven
6 Replies
6. Shell Programming and Scripting
Hi All,
I'm looking for a script which can transpose field names from column headers to values in one column.
for example, the input is:
IDa;IDb;IDc;PARAM1;PARAM2;PARAM3;
a;b;c;p1val;p2val;p3val;
d;e;f;p4val;p5val;p6val;
g;h;i;p7val;p8val;p9val;
into the output like this:
... (6 Replies)
Discussion started by: popesk
6 Replies
7. UNIX for Dummies Questions & Answers
Hi Gurus,
I have a tab separated text file with two columns. I would like to make the first column values as headings for the second column values.
Ex.
>value1 subjects
>value2 priorities
>value3 requirements
...etc
and I want to have a file
>value1
subjects
>value2
priorities... (4 Replies)
Discussion started by: Unilearn
4 Replies
8. UNIX for Dummies Questions & Answers
Hi,
I have a space de-limited text file. In the fifth column, I would like to switch "1"s with "2"s. How do I go about doing that? Thanks!
Sample input:
0 311000259 0 0 1 1
0 311000397 0 0 1 2
0 311000491 0 0 2 1
0 311000516 0 0 2 1
0 311000541 0 0 1 1
0 311000558 0 0 2 1
0 311000566 0... (1 Reply)
Discussion started by: evelibertine
1 Replies
9. Shell Programming and Scripting
12-11-2012,PNL,158406
12-11-2012,RISK,4564
12-11-2012,VAR_1D,310101
12-11-2012,VAR_10D,310101
12-11-2012,CB,866
12-11-2012,STR_VAR_1D,298494
12-11-2012,STR_VAR_10D,309623
09-11-2012,PNL,1024106
09-11-2012,RISK,4565
09-11-2012,VAR_1D,317211
09-11-2012,VAR_10D,317211
09-11-2012,CB,985... (7 Replies)
Discussion started by: manas_ranjan
7 Replies
10. Shell Programming and Scripting
this is part of a KT i am going thru.
i am writing a script in bash shell, linux where i have 2 columns where 1st signifies the nth hour like 00, 01, 02...23 and 2nd the file size.
sample data attached.
Desired output is 3 columns which will give the nth hour, number of entries in nth hour and... (3 Replies)
Discussion started by: alpha_1
3 Replies
LEARN ABOUT FREEBSD
swapon
SWAPON(2) BSD System Calls Manual SWAPON(2)
NAME
swapon, swapoff -- control devices for interleaved paging/swapping
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
int
swapon(const char *special);
int
swapoff(const char *special);
DESCRIPTION
The swapon() system call makes the block device special available to the system for allocation for paging and swapping. The names of poten-
tially available devices are known to the system and defined at system configuration time. The size of the swap area on special is calcu-
lated at the time the device is first made available for swapping.
The swapoff() system call disables paging and swapping on the given device. All associated swap metadata are deallocated, and the device is
made available for other purposes.
RETURN VALUES
If an error has occurred, a value of -1 is returned and errno is set to indicate the error.
ERRORS
Both swapon() and swapoff() can fail if:
[ENOTDIR] A component of the path prefix is not a directory.
[ENAMETOOLONG] A component of a pathname exceeded 255 characters, or an entire path name exceeded 1023 characters.
[ENOENT] The named device does not exist.
[EACCES] Search permission is denied for a component of the path prefix.
[ELOOP] Too many symbolic links were encountered in translating the pathname.
[EPERM] The caller is not the super-user.
[EFAULT] The special argument points outside the process's allocated address space.
Additionally, swapon() can fail for the following reasons:
[ENOTBLK] The special argument is not a block device.
[EBUSY] The device specified by special has already been made available for swapping
[ENXIO] The major device number of special is out of range (this indicates no device driver exists for the associated hardware).
[EIO] An I/O error occurred while opening the swap device.
Lastly, swapoff() can fail if:
[EINVAL] The system is not currently swapping to special.
[ENOMEM] Not enough virtual memory is available to safely disable paging and swapping to the given device.
SEE ALSO
config(8), swapon(8), sysctl(8)
HISTORY
The swapon() system call appeared in 4.0BSD. The swapoff() system call appeared in FreeBSD 5.0.
BSD
October 4, 2013 BSD