Hi,
I have a database (a simple .dat file) which has multiple records (structure datatype) in it.
I would like to know if we can use write() system call to update/modify intermediate records in this file (using C). If so, could somegive give a code snippet of the same. :-)
Thanks in advance... (2 Replies)
Hi,
I just stuckup in doing some regular expressions on a file.
I have data which has multiple FHS and BTS segments like:
FHS|12121|LOCAL|2323
MSH|10101|POTAMAS|2323
PID|121221|THOMAS|DAVID|23432
OBX|2342|H1211|3232
BTS|0000|MERSTO|LIABLE
FHS|12121|LOCAL|2323
MSH|10101|POTAMAS|2323... (3 Replies)
problem with piping one output to another.Would like to avoid the intermediate file creation.The piping does nt work on places where files have been created and goes in an endless loop.
sed -e "s/^\.\///g" $LINE1| sed -e "s/_\(\)/kkk\1/g" > $file1
tr -s '_' ' ' < $file1| \
sort -n -k... (1 Reply)
I have a file with data extracted, and need to insert a header with a constant string, say: H|PayerDataExtract
if i use sed, i have to redirect the output to a seperate file like
sed ' sed commands' ExtractDataFile.dat > ExtractDataFileWithHeader.dat
the same is true for awk
and... (10 Replies)
Suppose host B does not allow public/private key authentication - only secureID authentication. I already have a master ssh connection from host A to host B. Host A does allow public/private key authentication. Is there any way to connect from host C to host B by way of the master ssh connection... (2 Replies)
Hi, I am running a script which produces a number of intermediate output files for each time step. is there a way to remove these intermediate files and just retain the final output at every end of the loop, like sort of an initialization process? this the inefficient way i do it.
for i in... (3 Replies)
I am trying to extract the file names alone, for example "TVLI_STATS_NRT_XLSTWS03_20120215_132629.csv", from below output
which was given by the grep.
sam:/data/log: grep "C10_Subscribe.000|subscribe|newfile|" PDEWG511_TVLI_JOB_STATS.ksh.201202*
Output:
... (6 Replies)
Hi,
Can maybe some of the UNIX-guys recommend an online UNIX intermediate level documentation with examples (not too dry :-).
More the post-beginner level, for someone who has to play around with files and directories, with chmod, grep, sed, a little awk maybe...
bw,
Omar KN
(once tasted... (2 Replies)
Dear Help,
I have an input file which looks like -
121 300
122 345
124 567
127 234
$1 has 125 and 126 missing. How can I output those missing values?
Thanks (6 Replies)
Discussion started by: Indra2011
6 Replies
LEARN ABOUT REDHAT
snmptable
SNMPTABLE(1) Net-SNMP SNMPTABLE(1)NAME
snmptable - obtain and print an SNMP table
SYNOPSIS
snmptable [COMMON OPTIONS] TABLE-OID
DESCRIPTION
snmptable is an SNMP application that repeatedly uses the SNMP GETNEXT or GETBULK requests to query for information on a network entity.
The parameter TABLE-OID must specify an SNMP table.
OPTIONS -Cb Display only a brief heading. Any common prefix of the table field names will be deleted.
-CB Do not use GETBULK requests to retrieve data, only GETNEXT.
-Cf STRING
The string STRING is used to separate table columns. With this option, each table entry will be printed in compact form, just with
the string given to separate the columns (useful if you want to import it into a database). Otherwise it is printed in nicely
aligned columns.
-Ch Display only the column headings.
-CH Do not display the column headings.
-Ci This option prepends the index of the entry to all printed lines.
-Cw WIDTH
Specifies the width of the lines when the table is printed. If the lines will be longer, the table will be printed in sections of
at most WIDTH characters.
In addition to these options, snmptable takes the common options described in the snmpcmd(1) manual page.
EXAMPLES
$ snmptable localhost public at.attable
SNMP table: at.atTable
atIfIndex atPhysAddress atNetAddress
1 8:0:20:20:0:ab 130.225.243.33
$ snmptable localhost public -Cf + at.attable
SNMP table: at.atTable
atIfIndex+atPhysAddress+atNetAddress 1+8:0:20:20:0:ab+130.225.243.33
BUGS
The test for TABLE-OID actually specifying a table is rather heuristic. Note also that the test requires the defining MIB file to be
loaded.
SEE ALSO snmpcmd(1), variables(5).
4th Berkeley Distribution 08 Feb 2002 SNMPTABLE(1)