--- Adam Funk <[EMAIL PROTECTED]> wrote: > On Tuesday 18 May 2004 10:20, Thomas Adam wrote: > > > --- Adam Funk <[EMAIL PROTECTED]> wrote: > > > >> (Sorry about the long lines but they illustrate the output I'm > >> talking about.) > >> > >> ``dpkg -l'' on its own in a terminal produces wide output, e.g.: > > > > COLUMNS=200 dpkg -l | pipe | pipe | pipe | more | more | yay > > > > Change the value of 200, if it is too small. > > Excellent. I had tried these: > > (COLUMNS=200 ; dpkg -l) |head > (COLUMNS=200 && dpkg -l) |head > > but got the narrow output. Why do these two fail?
Because COLUMNS=200 is being set in a subshell. Thus, the resultant output when it is piped through to head is lost, since bash does not work in this way. Either you need to use process substitution or NOT run it in a subshell, as per my example in a previous e-mail. -- Thomas Adam ===== "The Linux Weekend Mechanic" -- http://linuxgazette.net "TAG Editor" -- http://linuxgazette.net "<shrug> We'll just save up your sins, Thomas, and punish you for all of them at once when you get better. The experience will probably kill you. :)" -- Benjamin A. Okopnik (Linux Gazette Technical Editor) Chat instantly with your online friends? Get the FREE Yahoo! Messenger http://uk.messenger.yahoo.com/ -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
