05-15-2009
wow, thanks for the fast answer.
# awk 'NR==1{print substr($0,1,19);next}1' file
This cuts the line correct if the blank is at column 19. What if the line is random so that the output for the 2 examples should look like this, a cut near column 15:
ah bb 213112312 12321 balah bb 213112312 12321 balah bb 213112312 123
ah bb 213112312
b 213112312 12321 balah bb 213112312 12321 balah bb 213112312 12321
b 213112312 12321 or
b 213112312
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VM(1) mgetty VM(1)
NAME
vm - VoiceModem is the program for handling the voice modem functionality from shell scripts
ACTIONS
beep options [<frequency [<length in 0.001sec>]]>
diagnostics options device name (e.g. ttyS2
dial options phone number
help
play options [<file names]+>
record options file name
shell options [<shell script [shell options]]>
wait options [<time in seconds]>
devicetest
OPTIONS
-c n use compression type n
-d n set i/o device
-t, -m, -i, -e, -s, -H equals to -d <2,3,4,5,6,7>
-l s set device string (e.g. -l ttyS2:ttyC0)
-v verbose output
-w use off / on hook signal from local handset to start and stop recording
-x n set debug level
-L n set maximum recording length in sec
-P print first DTMF tone on stdout and exit
-R read and print DTMF string on stdout and exit
-S s set default shell for shell scripts (e.g. -S /bin/sh)
-T n set silence timeout in 0.1sec
-V n set silence threshold to <n> (0-100%%)
SEE ALSO
vgetty(1)
POD ERRORS
Hey! The above document had some coding errors, which are explained below:
Around line 30:
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Around line 32:
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perl v5.10.1 2010-04-04 VM(1)