|
|
Sponsored Content
Top Forums
Shell Programming and Scripting
awk search syntax
Post 303043222 by migurus on Tuesday 21st of January 2020 03:15:34 PM
01-21-2020
|
|
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I recently started as an intern and my manager wanted to see how well I would handle Korn Bourne shell scripting without any prior experience, I have prior programming experience but I keep running into syntax errors with AWK. Please take a look at my simple code and tell me what stupid mistake... (6 Replies)
Discussion started by: yongho
6 Replies
2. Shell Programming and Scripting
I have written many awk commands which go in multiple lines.
I have this confusion many times.
Some time they work if i dont terminate them with "\" but some time error.
Some time in "if" statements between if and else if i dont use ";" it gives error but sometimes it doesnt.
The below... (4 Replies)
Discussion started by: pinnacle
4 Replies
3. Shell Programming and Scripting
I don't get correct output when I run this command line:
nmap -sP failedhost.com | grep -i failed | awk -F '{print $6}'
I basically want it to return 'failedhost.com' but its just showing the output of the nmap scan. (8 Replies)
Discussion started by: streetfighter2
8 Replies
4. Shell Programming and Scripting
Hi I am trying to understand AWK syntax
so I tried this command which gives me the home directory of root
awk 'BEGIN { FS = ":"} {if ($1 == "root") print $6 }' /etc/passwd
I would know what are the following commands doing. The first one prints all /etc/passwd, second prints nothing.
... (4 Replies)
Discussion started by: wakatana
4 Replies
5. UNIX for Dummies Questions & Answers
Little bit confusing while using awk :confused::confused:
In Sed while pattern search we can use "(double quotes)
i mean
$a=hello
$cat file.txt |sed -n "/$a/p"this thing work fine But if i use it in awk it's not working How could i do the substitution of pattern by a variables and the... (1 Reply)
Discussion started by: posix
1 Replies
6. Shell Programming and Scripting
i have a ksh code that needs to be written in AWK. can someone please help me here? :(
if }" | grep -c "$2") -gt 0 ] ; then
print - "found $2 in array ignore"
else
print - "did not find $2 in array ignore"
fi
ignore=4ty56r
ignore=er45ty
.
.
.
ignore=frhtg2 (27 Replies)
Discussion started by: usustarr
27 Replies
7. AIX
I have a file which is comma separated and has quotes. I can use this command and
awk -F"," '{ if ($4=="01" print $0 }' test.txt
But this doesn't fetch me the data.since it has quotes.
If the data has no quotes,the above command works fine.
In Unix you can skip quote \" but this doesn't work.... (7 Replies)
Discussion started by: ganesnar
7 Replies
8. Shell Programming and Scripting
more report2.txt
how to modify the AWK to print above out put for given n no of inputs using report2.txt file?
out put should be (3 Replies)
Discussion started by: kanakaraju
3 Replies
9. Shell Programming and Scripting
Hi I have a bash file which will split a big file to many small files.
But I got a syntax error.H="$(head -1 CCC.tped)"
awk 'print $0 > $1 ".tped"' CCC.tped
for f in $(ls *.tped); do echo "$H\n" "$(cat $f)" >$f; done
And
-bash-4.1$ bash split
awk: print $0 > $1".tped"
awk: ^ syntax error... (3 Replies)
Discussion started by: zhshqzyc
3 Replies
10. Shell Programming and Scripting
Hello Experts:
While writing a script to help one of the posts on here, I end up writing a wrong one. I am very much eager to know how this can be corrected.
Aim was to not print specified columns - lets say out of 100 fields, need to print all but 5th, 10th, 15th columns.
Someone already... (13 Replies)
Discussion started by: juzz4fun
13 Replies
LEARN ABOUT LINUX
get_mempolicy
GET_MEMPOLICY(2) Linux Programmer's Manual GET_MEMPOLICY(2) NAME
get_mempolicy - Retrieve NUMA memory policy for a process SYNOPSIS
#include <numaif.h> int get_mempolicy(int *mode, unsigned long *nodemask, unsigned long maxnode, unsigned long addr, unsigned long flags); Link with -lnuma. DESCRIPTION
get_mempolicy() retrieves the NUMA policy of the calling process or of a memory address, depending on the setting of flags. A NUMA machine has different memory controllers with different distances to specific CPUs. The memory policy defines from which node mem- ory is allocated for the process. If flags is specified as 0, then information about the calling process's default policy (as set by set_mempolicy(2)) is returned. The pol- icy returned [mode and nodemask] may be used to restore the process's policy to its state at the time of the call to get_mempolicy() using set_mempolicy(2). If flags specifies MPOL_F_MEMS_ALLOWED (available since Linux 2.6.24), the mode argument is ignored and the set of nodes [memories] that the process is allowed to specify in subsequent calls to mbind(2) or set_mempolicy(2) [in the absense of any mode flags] is returned in nodemask. It is not permitted to combine MPOL_F_MEMS_ALLOWED with either MPOL_F_ADDR or MPOL_F_NODE. If flags specifies MPOL_F_ADDR, then information is returned about the policy governing the memory address given in addr. This policy may be different from the process's default policy if mbind(2) or one of the helper functions described in numa(3) has been used to establish a policy for the memory range containing addr. If the mode argument is not NULL, then get_mempolicy() will store the policy mode and any optional mode flags of the requested NUMA policy in the location pointed to by this argument. If nodemask is not NULL, then the nodemask associated with the policy will be stored in the location pointed to by this argument. maxnode specifies the number of node IDs that can be stored into nodemask--that is, the maximum node ID plus one. The value specified by maxnode is always rounded to a multiple of sizeof(unsigned long). If flags specifies both MPOL_F_NODE and MPOL_F_ADDR, get_mempolicy() will return the node ID of the node on which the address addr is allo- cated into the location pointed to by mode. If no page has yet been allocated for the specified address, get_mempolicy() will allocate a page as if the process had performed a read [load] access to that address, and return the ID of the node where that page was allocated. If flags specifies MPOL_F_NODE, but not MPOL_F_ADDR, and the process's current policy is MPOL_INTERLEAVE, then get_mempolicy() will return in the location pointed to by a non-NULL mode argument, the node ID of the next node that will be used for interleaving of internal kernel pages allocated on behalf of the process. These allocations include pages for memory mapped files in process memory ranges mapped using the mmap(2) call with the MAP_PRIVATE flag for read accesses, and in memory ranges mapped with the MAP_SHARED flag for all accesses. Other flag values are reserved. For an overview of the possible policies see set_mempolicy(2). RETURN VALUE
On success, get_mempolicy() returns 0; on error, -1 is returned and errno is set to indicate the error. ERRORS
EFAULT Part of all of the memory range specified by nodemask and maxnode points outside your accessible address space. EINVAL The value specified by maxnode is less than the number of node IDs supported by the system. Or flags specified values other than MPOL_F_NODE or MPOL_F_ADDR; or flags specified MPOL_F_ADDR and addr is NULL, or flags did not specify MPOL_F_ADDR and addr is not NULL. Or, flags specified MPOL_F_NODE but not MPOL_F_ADDR and the current process policy is not MPOL_INTERLEAVE. Or, flags speci- fied MPOL_F_MEMS_ALLOWED with either MPOL_F_ADDR or MPOL_F_NODE. (And there are other EINVAL cases.) VERSIONS
The get_mempolicy() system call was added to the Linux kernel in version 2.6.7. CONFORMING TO
This system call is Linux-specific. NOTES
For information on library support, see numa(7). SEE ALSO
getcpu(2), mbind(2), mmap(2), set_mempolicy(2), numa(3), numa(7), numactl(8) COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. Linux 2008-08-15 GET_MEMPOLICY(2)