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Comments:
<0> yeah
<1> I might have missed a response to my question.
<2> OmiKrOn: $'#\tTEMPORAR'
<0> thanks gc
<2> (in BASH ONLY)
<0> righto
<0> working thanks
<0> another question(or please direct me to the manual page), I can have 3 more different strings instead of TEMPORAR, any ideea on how to see/get rid of them in what line ?
<3> hi all
<3> What exactly this gives, echo ${var:?"MSG"}
<3> bash: var: MSG
<4> how to match a floating point number with grep?
<3> What does this mean?
<3> ROBOd: do you want a soltion
<4> payal: yes
<2> payal: man bash, parameter expansion
<2> payal: warning: 1) he's an idiot; 2) he wants the moon.
<4> grep \d+.\d+ does not work
<3> ROBOd: go to google: search for regular expresion, the first hit takes you to a page, in that the same example is given
<3> precisely what you want
<4> greycat: seriously, i have nothing against you. the fact i want a script is not a big deal
<3> greycat: Yes I already checked out man page , it exits the scripts but ...... this is funny .. check out
<2> ROBOd: just use rcs.
<3> echo ${var:?"MSG"} > /dev/null 2>&1
<3> bash: var: MSG
<3> strange nah!
<2> you've been given MORE than your fair share of advice, hints, corrections, criticism, etc.
<3> ROBOd: please do what I say, believe me
<3> greycat: why is error not redirected to /dev/null
<2> imadev:~$ bash -c 'echo ${var:?MSG}' 2>/dev/null
<2> imadev:~$
<3> I tried redirecting all other fds also, none of them waork
<2> it's probably like "time".
<2> !faqtime
<5> http://wooledge.org/mywiki/BashFaq#faq32 -- How can I redirect the output of 'time' to a variable or file?
<6> Futter?
<3> greycat: if you are right this time too, I will give you a saucer of milk
<3> thanks greycat
<0> another question(or please direct me to the manual page), I can have 3 more different strings instead of TEMPORAR, any ideea on how to see/get rid of them in what line ?
<3> OmiKrOn: ?
<3> greycat: are you using openbsd
<0> i have this grep $'#\tTEMPORAR' /etc/dhcpd.conf | cut -f 2
<0> i want to match another strings except TEMPORAR
<3> -v
<3> grep -v
<0> -v is invert
<3> so that is what you want
<0> no
<0> ok lemme use pastebin
<0> http://rafb.net/paste/results/EmmZLt17.html <-- i want to match TEMPORAR MAC VECHI and NEPLATA
<3> OmiKrOn: you want to match all line having those words?
<0> yeah
<0> a direction to the right man page should be fine tho'
<4> is there a way to output from grep the regular expression group i just matched?
<3> what is wrong with egrep '(foo|bar|sar)' fname
<4> not the entire line which matched
<3> you can store the values in variable and maybe used sed
<3> sed "s/\($var\).*/\1/'"
<4> i have grep "version = \([0-9]\+\\.[0-9]\+\);" index.js
<3> sed "s/\($var\).*/\1/"
<4> which nicely works, however i'd like grep to just output the content of the first group, not the entire line
<4> like i can do in php, perl, whatever ... using $1, $2, $3...
<3> ROBOd: grep cannot do that, you have to use sed
<3> grep outputs the whole line
<4> too bad :(
<4> i don't wanna do any search and replace
<3> why not use sed
<3> hmmmmmmmm
<4> payal: well ... can i send \1 to a script? or can i directly increment it with sed?
<4> the number
<3> decrement what?
<4> i was thinking along the lines of using grep to match the floating point number, then increment, then use sed
<4> ... increment the number
<3> wait I am getting confused betwween you and OmiKrOn
<4> np
<3> ROBOd: did you see the site I told you
<4> payal: yes
<3> did you get a solution there
<4> payal: actually, i know regex, i used it quite enough
<3> ok
<4> payal: thing is i don't know what grep is capable of doing with regex
<7> hi
<7> mv /tmp/123 /backup/trfw/
<7> mv: failed to preserve ownership for `/backup/trfw/123': Permission denied
<3> ROBOd: not much but egrep can do better
<4> payal: yes, i found the solution
<4> uhm...
<7> it exits with 1 which ****s ;)
<7> i am trying to copy it onto a samba share
<3> spiekey: maybe you don't have write perms on directory trfw
<4> i couldn't figure out the difference between grep and egrep
<3> ROBOd: egrep uses ERE and grep uses BRE
<3> I always use egrep instead of grep
<7> payal: i do!
<3> what are they?
<7> payal: it copys the file fine, but fails to set its mod
<8> ROBOd: grep(1) can have problems with non-ASCII files. egrep(1) handles files with non-US characters in it much better.
<4> thanks MiniMax and payal
<4> and apologies if i am annoying
<4> yet, no apologies to gref*cat :)
<7> payal: a touch works fine on the destination dir
<3> hmmmm
<3> not sure spiekey
<3> sorry
<2> payal: the box that hosts the wiki is OpenBSD
<9> how to do math in bash ?
<9> n=1; n+1 doesn't work :)
<1> I forget... is there a command to generate ranges like `range 1 6 2` outputting "1 3 5"?
<2> !math
<5> http://wooledge.org/mywiki/ArithmeticExpression
<1> or wait... I guess I can use arithmetic too.
<3> a=8
<2> for ((i=1; i<=6; i+=2)); do ...
<3> b=9
<3> let c=a+b
<1> greycat: thanks.
<3> brb
<9> thanks, greycat + bot
<4> yo, playas
<4> i got the version number with sed and ghrep
<4> *grep
<10> Go away.
<4> how to increment it, lol?
<10> Increment what?
<8> !arithmetic
<10> !math
<5> http://wooledge.org/mywiki/ArithmeticExpression
<8> Damn - I was soooo close.
<2> 12:55 greycat> if you're VERY CLEVER, you might be able to do the EXTRACTION with sed. then, incrementing the version number is a Hard Problem. Then, writing it back into the file would require an editing-type operation. hence ed(1) or patch(1) or something that can edit files.
<10> heh.
<4> thanks guys
<11> short of invoking patch within a script is there an easier method of inserting text into the middle of a file?
<2> 12:49 greycat> now THERE is a reasonable answer, in the middle of all that prose: use a versioning system.
<2> 12:53 greycat> CVS is just a network layer around RCS
<2> 13:03 greycat> ROBOd: just use rcs.
<8> trelane: perl can do it.
<4> greycat: in worst-case scenary i will use !/bin/perl or php :)
<4> *scenario
<2> I'm sure that will work SO much better than keeping your important files in a version control system. Oh, yes.
<8> ROBOd: Be our guest. And *do* come back and tell how you did it.
<4> greycat: i backup my data on a daily basis
<4> MiniMax: you want me to tell you guys how i do it with bash? or perl/php? :)
<2> ROBOd: feel free to bother #perl or #php instead.
<12> hehe
<4> greycat: i will not do so, lol :P
<4> because i already know how to do it in perl/php
<2> Would it help if I sugar-coated it? "I feel that you have exhausted the supply of advice we are capable of giving you."
<4> it's just more fun talking to you guys :)
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