Hi,
If, in a text file a string is expected at a certain fixed position(for eg at position 5 or from 5-10 on every line)
how to check whether data is present on that position or not?
Thnx in advance (6 Replies)
korn shell
If
then
update_smartcare_user_password "$u_id"
else
echo "Not a database user"
fi
i get this error
Syntax error at line *** : `then' is not expected.
what should i do.
I want to check whether $a is null or not. (2 Replies)
My makefile has some code as follows:
if ; then \
echo copying tools; \
cp -f `../${TOOLS_ROOT_PATH}/ext_tools.sh 1` ${EXTERNAL_BIN_DIR} || exit $$?;\
fi; \
The ext_tools.sh is as follows:
cat ttx.conf | grep external | grep -v ^# | awk '{print $1}'
It can sometime result... (1 Reply)
Hi All,
I have a file with 10 columns and get the required data for nine columns properly except 8th. In 8th column i have both NULL and NON NULL values...i.e
certain records have values for all the columns including 8th column and certain records have 8th column as NULL.My requisite is,without... (20 Replies)
hi,
i have 3 lines of output , if second line exists then only condition within the if loop has to exeute other wise it has exit from loop.
i had tried like this but not getting
please help me ...
Code:
if ; then
echo "success"
else
echo ""
Use code tags please,... (8 Replies)
Hi Champs!!!
im a newbie in unix, need ur expert help for my problem...
I need to search if there are any "NULL" entries in the string
String without Null
Str1: 203652|1000003653|tellt|RUPV|4649|1|07/28/2011 01:56:12
String with Null (RUPV is removed)
Str2:... (5 Replies)
Guys,
Please help me on the below
sample.cfg
var=NULL
sample.sh
#!/bin/sh
. /sample.cfg
if ;then
1 st command here
else
2 nd command here
fi (3 Replies)
hi,
I had a small question.I had a file from which i need to extract data.
I have written the below script to check if the file exists and if it exists extract requierd columns from the file.
IFILE=/home/home01/Report_1.csv
OFILE=/home/home01/name.csv.out1
if #Checks if file exists... (1 Reply)
Discussion started by: Vivekit82
1 Replies
LEARN ABOUT NETBSD
m_tag_copy
M_TAG(9) BSD Kernel Developer's Manual M_TAG(9)NAME
m_tag, m_tag_get, m_tag_free, m_tag_prepend, m_tag_unlink, m_tag_delete, m_tag_delete_chain, m_tag_delete_nonpersistent, m_tag_find,
m_tag_copy, m_tag_copy_chain, m_tag_init, m_tag_first, m_tag_next -- mbuf tagging interfaces
SYNOPSIS
#include <sys/mbuf.h>
struct m_tag *
m_tag_get(int type, int len, int wait);
void
m_tag_free(struct m_tag *t);
void
m_tag_prepend(struct mbuf *m, struct m_tag *t);
void
m_tag_unlink(struct mbuf *m, struct m_tag *t);
void
m_tag_delete(struct mbuf *m, struct m_tag *t);
void
m_tag_delete_chain(struct mbuf *m, struct m_tag *t);
void
m_tag_delete_nonpersistent(struct mbuf *);
struct m_tag *
m_tag_find(struct mbuf *m, int type, struct m_tag *t);
struct m_tag *
m_tag_copy(struct m_tag *m);
int
m_tag_copy_chain(struct mbuf *to, struct mbuf *from);
void
m_tag_init(struct mbuf *m);
struct m_tag *
m_tag_first(struct mbuf *m);
struct m_tag *
m_tag_next(struct mbuf *m, struct m_tag *t);
DESCRIPTION
The m_tag interface is used to ``tag'' mbufs.
FUNCTIONS
m_tag_get(type, len, wait)
Allocate an mbuf tag. type is one of the PACKET_TAG_ macros. len is the size of the data associated with the tag, in bytes. wait
is either M_WAITOK or M_NOWAIT.
m_tag_free(t)
Free the mbuf tag t.
m_tag_prepend(m, t)
Prepend the mbuf tag t to the mbuf m. t will become the first tag of the mbuf m. When m is freed, t will also be freed.
m_tag_unlink(m, t)
Unlink the mbuf tag t from the mbuf m.
m_tag_delete(m, t)
The same as m_tag_unlink() followed by m_tag_free().
m_tag_delete_chain(m, t)
Unlink and free mbuf tags beginning with the mbuf tag t from the mbuf m. If t is NULL, m_tag_delete_chain() unlinks and frees all
mbuf tags associated with the mbuf m.
m_tag_delete_nonpersistent(m)
Unlink and free all non persistent tags associated with the mbuf m.
m_tag_find(m, type, t)
Find an mbuf tag with type type after the mbuf tag t in the tag chain associated with the mbuf m. If t is NULL, search from the
first mbuf tag. If an mbuf tag is found, return a pointer to it. Otherwise return NULL.
m_tag_copy(t)
Copy an mbuf tag t. Return a new mbuf tag on success. Otherwise return NULL.
m_tag_copy_chain(to, from)
Copy all mbuf tags associated with the mbuf from to the mbuf to. If to already has any mbuf tags, they will be unlinked and freed
beforehand. Return 1 on success. Otherwise return 0.
m_tag_init(m)
Initialize mbuf tag chain of the mbuf m.
m_tag_first(m)
Return the first mbuf tag associated with the mbuf m. Return NULL if no mbuf tags are found.
m_tag_next(m, t)
Return the next mbuf tag after t associated with the mbuf m. Return NULL if t is the last tag in the chain.
CODE REFERENCES
The mbuf tagging interfaces are implemented within the file sys/kern/uipc_mbuf2.c.
The PACKET_TAG_ macros are defined in the file sys/sys/mbuf.h.
SEE ALSO intro(9), malloc(9), mbuf(9)BUGS
The semantics of the term "persistent tag" are vague.
BSD September 7, 2004 BSD