Hi everybody
for file in *
#Bash performs filename expansion
#+ on expressions that globbing recognizes.
do
output="`grep -n "$1" "$file"`"
echo "$file: `expr "$output" : '\(^.*$\)'`"
done
In the above bash script segment, I try to print just the first line of string named... (3 Replies)
Couldn't find much help on the kind of question I've here:
There is this text file with text as:
Line one has a bingo
Line two does not have a bingo but it has a tango
Bingo is on line three
Line four has both tango and bingo
Now I would want to search for the pattern "bingo" in this file... (3 Replies)
Good Day,
Im new to scripting especially awk and sed. I just would like to ask help from you guys about a sed command that prints the line immediately after a regexp, but not the line containing the regexp.
sed -n '/regexp/{n;p;}' filename
What if my regexp is 3 word or a sentence. Im... (3 Replies)
Greetings all,
...here is yet another string of awk/sed questions from a RegExp-Challenged luser :eek:
I'm looking to have sed/awk do some clean-up on routing tables and to that end, I would like to do the following:
1.) If a line contains the word "masks" or "subnets" prepend CR/LF to... (16 Replies)
Hi,
I'm curious about how to do a very simple thing with regular expressions that I'm unable to figure out.
If I want to find out if a string contains 'a' AND 'b' AND 'c' it can be very easily done with grep:
echo $STRING|grep a|grep b|grep c
but, how would you do that in a single... (9 Replies)
continuing from my previous post, whose link is given below as a reference
https://www.unix.com/shell-programming-scripting/171076-shell-scripting.html#post302573569
consider there is create table commands in a file for eg:
CREATE TABLE `Blahblahblah` (
`id` int(11) NOT NULL... (2 Replies)
I need help with a regexp to find out the ip address which can possibly be present in a URL.
The URLs can be in any of the following form
<domain>?a=12345&d=somestring1
<domain>?c=10.10.10.100&d=somestring1
<domain>?a=12345&b=somestring1&c=10.1.2.4d=somestring2... (3 Replies)
Hi,
I am trying with the below Perl one-liner using regular expression to extract the first and second column of a text file:
perl -p -e "s/\s*(\w+).*/$1/"
perl -p -e "s/\s*.+\s(.+)\s*/$1\n/"
whereas the text file's data looks like:
Error: terminated 2233
Warning: reboot 3434
Warning:... (3 Replies)
I'm probably just not thinking of the correct term to search for :-) But I want to match a pattern that might be 'ABC' or '1ABC' there might be three characters, or there might be four, but if there are four, the first has to be 1 (1 Reply)
Trying to find and replace one string with another string in a file
#!/usr/bin/perl
$csd_table_path = "/file.ntab";
$find_str = '--bundle_type=021';
$repl_str = '--bundle_type=021 --target=/dev/disk1s2';
if( system("/usr/bin/perl -p -i -e 's/$find_str/$repl_str/' $csd_table_path")... (2 Replies)
Discussion started by: cillmor
2 Replies
LEARN ABOUT MINIX
test
TEST(1) General Commands Manual TEST(1)NAME
test, [ - test for a condition
SYNOPSIS
test expr
[ expr ]
OPTIONS
(none)
EXAMPLES
test -r file # See if file is readable
DESCRIPTION
Test checks to see if files exist, are readable, etc. and returns an exit status of zero if true and nonzero if false. The legal operators
are
-r file true if the file is readable
-w file true if the file is writable
-x file true if the file is executable
-f file true if the file is not a directory
-d file true if the file is a directory
-s file true if the file exists and has a size > 0
-t fd true if file descriptor fd (default 1) is a terminal
-z s true if the string s has zero length
-n s true if the string s has nonzero length
s1 = s2 true if the strings s1 and s2 are identical
s1 != s2 true if the strings s1 and s2 are different
m -eq m true if the integers m and n are numerically equal
The operators -gt, -ge, -ne, -le, and -lt may be used as well. These operands may be combined with -a (Boolean and), -o (Boolean or), !
(negation). The priority of -a is higher than that of -o. Parentheses are permitted, but must be escaped to keep the shell from trying to
interpret them.
SEE ALSO expr(1), sh(1).
TEST(1)