Some sed versions do have the \< and \> boundary anchors; they do not consume a character. And not only allow a /g in one go but also make the substitution easier.
--
Just seeing that the Solaris /usr/xpg4/bin/sed counts the \< as a character that is truely a bug (/usr/bin/sed works).
Last edited by MadeInGermany; 09-09-2016 at 07:10 AM..
This User Gave Thanks to MadeInGermany For This Post:
Some sed versions do have the \< and \> boundary anchors; they do not consume a character. And not only allow a /g in one go but also make the substitution easier.
--
Just seeing that the Solaris /usr/xpg4/bin/sed counts the \< as a character that is truely a bug (/usr/bin/sed works).
Hi MIG,
How below highlighted part is working.
.Why only one sided boundary is being used. Please explain.
Some sed versions do have the \< and \> boundary anchors; they do not consume a character. And not only allow a /g in one go but also make the substitution easier.
--
Just seeing that the Solaris /usr/xpg4/bin/sed counts the \< as a character that is truely a bug (/usr/bin/sed works).
Why do you think this is a bug in /usr/xpg4/bin/sed? The standards say that the REs accepted by sed are Basic Regular Expressions (BREs) with three minor tweaks that don't affect this command. In a BRE the meaning of a backslash followed by a character that is not a BRE special character, a <left-parenthesis>, <right-parenthesis>, <left-curly-bracket>, <right-curly-bracket>, the current delimiter character (the character that delimits the BRE and replacement from the command and flags), and the decimal digits 1 through 9 is undefined (and all of these are valid after a <backslash> only in certain contexts). The BRE special characters are <period>, <left-square-bracket>, <backslash>, <asterisk>, <circumflex>, and <dollar-sign> and all of these are also only special in certain contexts.
According to the standards, using \< or \> in a BRE can be treated by the implementation as a request to match a < or >, respectively; match a word boundary; abort with a BRE syntax error; hunt down and kill the programmer who wrote that BRE, or anything else it chooses to do. (Legal and marketing implications make it unlikely that an implementation will make the next to the last choice in that list. )
The Solaris man page for both /usr/bin/sed and /usr/xpg4/bin/sed refers to the regexp man page, that states
Even if it does not explicitly say that the \< should never count as a character, the implementations in /usr/bin/sed and /usr/xpg4/bin/sed should be consistent.
This User Gave Thanks to MadeInGermany For This Post:
The Solaris man page for both /usr/bin/sed and /usr/xpg4/bin/sed refers to the regexp man page, that states
Even if it does not explicitly say that the \< should never count as a character, the implementations in /usr/bin/sed and /usr/xpg4/bin/sed should be consistent.
Hi MadeInGermany,
OK. Yes, the fact that /usr/xpg4/bin/sed does not behave as documented by the Solaris sed man page is definitely a bug. (It isn't a standards conformance issue, but it is a bug.)
Hi All,
I am using a informatica job to create a csv file and a unix script the mail the generated file.Everything is working fine but I am not seeing leading zeros in the csv file sent in the mail.These zeros were present when the .csv file was generated by informatica procees.
Is there any... (11 Replies)
I have a list of numbers extracted and need to delete the leading zeros from them, but when i do so, the command I am using also deletes numbers that end in Zero as well. eg 10, 20, 30, etc
this is part of a larger script and the only way I can think of is to try and detect the 10,20 30 etc in... (19 Replies)
Hi,
i have a variable which conatins values like 00001,0003,00067,00459.
I want to use the values one by one and in the same form as they are like 00001,0003,00067,00459.
Also can anyone tell me how to increment those numbers by 1,keeping the format as same like 00002,0004,00068,00460.... (5 Replies)
Hello Gurus,
Quick question. I have a file with the following records:
A~000000000000518000~SLP ~99991231~20090701~88.50~USD~CS~
A~000000000000518000~SLP ~99991231~20090701~102.00~USD~CS~
A~000000000000772000~SLP ~99991231~20100701~118.08~USD~CS~
I wold like to do the following:
1. Add... (1 Reply)
Hi
i need help in adding leading zero to filenames
e.g file name in my folder are
1_234sd.txt
23_234sd.txt
the output i need is
001_234sd.txt
023_234sd.txt
can i do this shell scripting
please help (2 Replies)
Hi all,
I have file with numeric values. I need to pad each value with leading zeros such that total lenght of each value is 16.
Example:
cat tmp.txt
502455
50255
5026
5027
5028
Output
0000000000502455
0000000000050255
0000000000005026
0000000000005027
0000000000005028
Any... (12 Replies)
Hi
I have a file in which I have 5 columns which are delimited by “|” as shown
ABC|12|YAK|METRIC|000000019.5
XYZ|10|ABX|META|000000002.5
Now my requirement is to take the last column trim the leading zero's for that column values and write back to the same file in the same... (7 Replies)
Hi All,
I am working with a fixed width file Forrmat.
C1 Number (10,3)
C2 Number (10,3)
e.g.
c1= 0000000100.000
c2= 0000000020.000
0000000100.0000000000020.000
I have to perform c1 - c2 . i.e. I want answer to be 0000000080.000. but I am loosing the leading zeros( only getting... (3 Replies)
How to insert leading zeros into a left-justisfied zip code?
e.g. Zip code is written as 60320 which is left-justified to make it be read as 0060320.
We have to move it to right-justifiable then insert 2 leading zeros into it... ;) (1 Reply)