Unix/Linux : How to pipe/save output of a command to file?
Problem :
You need to capture/pipe or save the output of a command execution in Unix/Linux to a file. How to do that?
Solutions :
Use the greater than sign >
to save the output to a file.
For example :
cat /var/log > /tmp/varlog.log
ls /dir > dir.txt
**NOTE : >
will overwrite or create new file. >>
will append to existing file.
you can also use the logsave
command to capture the output. However, the logsave
command is only available on Linux platform.
For example :
logsave [options] /tmp/varlog.log cat /var/log
Save of the logsave
options are :
-a This option will cause the output to be appended to logfile, instead of replacing its current contents.
-s This option will cause logsave to skip writing to the log file text which is bracketed with a control-A (ASCII 001 or Start of Header)
and control-B (ASCII 002 or Start of Text). This allows progress bar information to be visible to the user on the console,
while not being written to the log file.
-v This option will make logsave to be more verbose in its output to the user.
By Adam Ng
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