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Cut


© November 2003 Tony Lawrence

Having used Unix since before "cut" was apt to be on the machine, I'm used to using "sed" to extract what I want from a line, but "cut" is much easier:

 apl$ cut -d : -f 5 /etc/passwd
Unprivileged User
System Administrator
System Services
Unknown User
Sendmail User
World Wide Web Server
MySQL Server
sshd Privilege separation
Anthony Lawrence
 

Now that's not fun with sed.

Cut can also use character positions:

cut -c 1-8  /etc/passwd
nobody:*
root:*:0
daemon:*
unknown:
smmsp:*:
www:*:70
mysql:*:
sshd:*:7
apl:*:50
 

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Inexpensive and informative Apple related e-books:

Take Control of Pages

El Capitan: A Take Control Crash Course

Take Control of High Sierra

Take Control of iCloud, Fifth Edition

Digital Sharing Crash Course




More Articles by © Tony Lawrence


You can also use the substr function of expr to extract string data.

--BigDumbDinosaur



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