Keshetti Mahesh wrote: > Hi all, > > Can anyone tell me what is the maximum limit of number of pipes > that can be opened through a single command ? > > e.g; # <cmnd> ||||||||||||||||||||||||||||||| .....|
For what is worth, on my system (bash 3.2.33(1)-release) I can have 3332 pipes before bash gives an error. I used this command: (printf 'echo a';for i in `seq 1 3332`;do printf '|cat';done;echo) | bash If I replace 3332 with 3333, bash gives bash: line 1: syntax error near unexpected token `|' Curiously, with this command (printf 'echo a';for i in `seq 1 3330`;do printf '|(read a;echo $a)'; done;echo) | bash the limit is 3330. Ulimit tells me that the maximum number of user processes is 16381, so it seems unrelated to that. Why do you want to know? -- D.
