06-05-2009
Quote:
Originally Posted by
danmero
Yes, for command lines but not in awk scripts.
The backslash is needed in awk, as in the shell, when the line would be taken as a complete command if the backslash were not there.
As if (condition) is not complete, there is no need for a backslash.
10 More Discussions You Might Find Interesting
1. 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
2. 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
3. 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
4. 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
5. AIX
I have a file which is comma separated and has quotes. I can use this command and
awk -F"," '{ if ($4=="01" print $0 }' test.txt
But this doesn't fetch me the data.since it has quotes.
If the data has no quotes,the above command works fine.
In Unix you can skip quote \" but this doesn't work.... (7 Replies)
Discussion started by: ganesnar
7 Replies
6. Shell Programming and Scripting
Hi I have a bash file which will split a big file to many small files.
But I got a syntax error.H="$(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
7. Shell Programming and Scripting
Hi, I would like to know what is the correct syntax to perform a function in awk. Although I have seen several examples, not get it to work, this is what I'm trying:
#!/bin/bash
awk
function multi (number) {
return number * 3
}
print multi (4)Thanks (2 Replies)
Discussion started by: Godie
2 Replies
8. Shell Programming and Scripting
Hello,
I have perl script,which take some part of data in the file.
the below command works fine in normal cmd prompt.
`awk '/CDI/ && // && !/Result for/ {print $3 $5 > "final.txt"}' datalist.txt`;
`nawk -F"" '{print $2}' finalcdi.txt`;
But not working.
Please use code tags, thanks. (5 Replies)
Discussion started by: rasingraj
5 Replies
9. 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
10. Shell Programming and Scripting
awk -F, ' NR>1 {
BEGIN{
chr=$2
}
END{
for (k in chr) {print k}
}
} ' $gene_file
I've a really simple code. I want to store gene name and it's chromosome and in the end print them.
I'm skipping line one as it contains headers.
But I don't know why I get error as: (2 Replies)
Discussion started by: genome
2 Replies
LEARN ABOUT OSX
tcl_backslash
Tcl_Backslash(3) Tcl Library Procedures Tcl_Backslash(3)
__________________________________________________________________________________________________________________________________________________
NAME
Tcl_Backslash - parse a backslash sequence
SYNOPSIS
#include <tcl.h>
char
Tcl_Backslash(src, countPtr)
ARGUMENTS
char *src (in) Pointer to a string starting with a backslash.
int *countPtr (out) If countPtr is not NULL, *countPtr gets filled in with number of characters in the backslash sequence, includ-
ing the backslash character.
_________________________________________________________________
DESCRIPTION
The use of Tcl_Backslash is deprecated in favor of Tcl_UtfBackslash.
This is a utility procedure provided for backwards compatibility with non-internationalized Tcl extensions. It parses a backslash sequence
and returns the low byte of the Unicode character corresponding to the sequence. Tcl_Backslash modifies *countPtr to contain the number of
characters in the backslash sequence.
See the Tcl manual entry for information on the valid backslash sequences. All of the sequences described in the Tcl manual entry are sup-
ported by Tcl_Backslash.
SEE ALSO
Tcl(n), Tcl_UtfBackslash(3)
KEYWORDS
backslash, parse
Tcl 8.1 Tcl_Backslash(3)