I have a question about how to combine patterns in grep commands with the OR operator.
So I have this little assignment here:
Provide a regular expression that matches email addresses for San Jose City College faculty. A San Jose City college faculty’s email address takes the form:
<only first letter of first name><last name>@sanjosecity.edu or
<only first letter of first name><last name>@sjcc.edu
The letters for first name and last name are all lower case letters. Last name must contain at least one (or more) letter. Examples: bloo@sanjosecity.edu or bloo@sjcc.edu
So I came up with two separate grep commands:
Code:
grep '^[a-z]\{2,\}\@sjcc\.edu$' file.txt
and
Code:
grep '^[a-z]\{2,\}\@sanjosecity\.edu$' file.txt
But I have no idea how to combine them together!! I tried using the OR operator, the | , but it would not give me the correct result. It would ignore the "sanjosecity" pattern, and just satisfy the "sjcc" one.
How do I combine the patterns successfully, while still making sure that either way, the email is all lower case letters? (NO NUMBERS!)
Any help would be greatly appreciated!!
I'm preparing for my final tomorrow and I'm getting nervous because I can't seem to solve this
Hi,
Can we grep multiple patterns in UNIX.
for example:
cat /x/y/oratab | grep -i "pattern1|pattern2" .... etc
I require the syntax for multiple patterns. | is not working as I explained in example.
Malay (4 Replies)
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I tried using grep -e / -E / -F options as given in man.
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william,fernandes,xxxxx
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yy=,xx=
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Hi,
I'm using AIX(ksh shell).
> cat temp.txt
"a","b",0
"c",bc",0
"a1","b1",0
"cc","cb",1
"cc","b2",1
"bb","bc",2
I want the output as:
"a","b","c","bc","a1","b1"
"cc","cb","cc","b2"
"bb","bc"
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Discussion started by: navsan420
2 Replies
LEARN ABOUT PLAN9
zgrep
ZGREP(1) General Commands Manual ZGREP(1)NAME
zgrep - search possibly compressed files for a regular expression
SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename...
DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code:
(-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the
standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep.
If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.
EXIT CODE
2 - An option that is not supported was specified.
AUTHOR
Charles Levert (charles@comm.polymtl.ca)
SEE ALSO grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)ZGREP(1)
12-08-2014
Combining grep patterns with OR condition?!
